slus223c current mode pwm controller (rev. c)
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7/28/2019 Slus223c Current Mode PWM Controller (Rev. C)
1/27
www.ti.com
F E A T U R E S D E S C R I P T I O N
B L O C K D I A G R A M
11
A/B
Vcc 7 12
5 9GROUND
4 7RT/CT
2 3VFB
1 1COMP
3 5CURRENTSENSE
34 V
2.50 V
OSC
UVLO
S/R5 V
REF
VREFGoodLogic
Internal
BIAS
ErrorAmp
2R
R
1 V CURRENTSENSECOMPARATOR
PWMLATCH
S
R
T
8 14
VREF5 V50 mA
7
VC
106
OUTPUT
85
POWERGROUND
Note 1:
Note 2:
A = DIL8 Pin Number. B = SO14 and CFP14 Pin Number.
Toggle flip flop used only in 1844 and 1845.
U C 1 8 4 2 / 3 / 4 / 5
U C 2 8 4 2 / 3 / 4 / 5
U C 3 8 4 2 / 3 / 4 / 5 S L U S 2 2 3 C A P R I L 1 9 9 7 R E V I S E D J U N E 2 0 0 7
C U R R E N T M O D E P W M C O N T R O L L E R
O p t i m i z e d F o r O f f - l i n e a n d D C - t o - D C T h e U C 1 8 4 2 / 3 / 4 / 5 f a m i l y o f c o n t r o l d e v i c e s p r o v i d e s C o n v e r t e r s t h e n e c e s s a r y f e a t u r e s t o i m p l e m e n t o f f - l i n e o r
d c - t o - d c f i x e d f r e q u e n c y c u r r e n t m o d e c o n t r o l L o w S t a r t - U p C u r r e n t ( < 1 m A ) s c h e m e s w i t h a m i n i m a l e x t e r n a l p a r t s c o u n t .
A u t o m a t i c F e e d F o r w a r d C o m p e n s a t i o n I n t e r n a l l y i m p l e m e n t e d c i r c u i t s i n c l u d e u n d e r - v o l t a g e
P u l s e - b y - P u l s e C u r r e n t L i m i t i n g l o c k o u t f e a t u r i n g s t a r t u p c u r r e n t l e s s t h a n 1 m A , a p r e c i s i o n r e f e r e n c e t r i m m e d f o r a c c u r a c y a t t h e e r r o r E n h a n c e d L o a d R e s p o n s e C h a r a c t e r i s t i c s a m p i n p u t , l o g i c t o i n s u r e l a t c h e d o p e r a t i o n , a P W M U n d e r - V o l t a g e L o c k o u t W i t h H y s t e r e s i s c o m p a r a t o r w h i c h a l s o p r o v i d e s c u r r e n t l i m i t c o n t r o l ,
D o u b l e P u l s e S u p p r e s s i o n a n d a t o t e m p o l e o u t p u t s t a g e d e s i g n e d t o s o u r c e o r s i n k h i g h p e a k c u r r e n t . T h e o u t p u t s t a g e , s u i t a b l e f o r H i g h C u r r e n t T o t e m P o l e O u t p u t d r i v i n g N - C h a n n e l M O S F E T s , i s l o w i n t h e o f f s t a t e . I n t e r n a l l y T r i m m e d B a n d g a p R e f e r e n c e
D i f f e r e n c e s b e t w e e n m e m b e r s o f t h i s f a m i l y a r e t h e 5 0 0 - k H z O p e r a t i o n
u n d e r - v o l t a g e l o c k o u t t h r e s h o l d s a n d m a x i m u m d u t y L o w R O E r r o r A m p c y c l e r a n g e s . T h e U C 1 8 4 2 a n d U C 1 8 4 4 h a v e U V L O t h r e s h o l d s o f 1 6 V O N a n d 1 0 V O F F, i d e a l l y s u i t e d t o o f f - l i n e a p p l i c a t i o n s . T h e c o r r e s p o n d i n g t h r e s h o l d s f o r t h e U C 1 8 4 3 a n d U C 1 8 4 5 a r e 8 . 4 V a n d 7 . 6 V . T h e U C 1 8 4 2 a n d U C 1 8 4 3 c a n o p e r a t e t o d u t y c y c l e s a p p r o a c h i n g 1 0 0 % . A r a n g e o f z e r o t o 5 0 % i s o b t a i n e d b y t h e U C 1 8 4 4 a n d U C 1 8 4 5 b y t h e a d d i t i o n o f a n i n t e r n a l t o g g l e f l i p f l o p w h i c h b l a n k s t h e o u t p u t o f f e v e r y o t h e r c l o c k c y c l e .
P l e a s e b e a w a r e t h a t a n i m p o r t a n t n o t i c e c o n c e r n i n g a v a i l a b i l i t y , s t a n d a r d w a r r a n t y , a n d u s e i n c r i t i c a l a p p l i c a t i o n s o f T e x a s I n s t r u m e n t s s e m i c o n d u c t o r p r o d u c t s a n d d i s c l a i m e r s t h e r e t o a p p e a r s a t t h e e n d o f t h i s d a t a s h e e t .
P R O D U C T I O N D A T A i n f o r m a t i o n i s c u r r e n t a s o f p u b l i c a t i o n d a t e . C o p y r i g h t 1 9 9 7 2 0 0 7 , T e x a s I n s t r u m e n t s I n c o r p o r a t e d P r o d u c t s c o n f o r m t o s p e c i f i c a t i o n s p e r t h e t e r m s o f t h e T e x a s I n s t r u m e n t s s t a n d a r d w a r r a n t y . P r o d u c t i o n p r o c e s s i n g d o e s n o t
n e c e s s a r i l y i n c l u d e t e s t i n g o f a l l p a r a m e t e r s .
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7/28/2019 Slus223c Current Mode PWM Controller (Rev. C)
2/27
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A B S O L U T E M A X I M U M R A T I N G S ( 1 )
C O N N E C T I O N D I A G R A M S
1
2
3
4
8
7
6
5
COMP
VFB
ISENSE
RT/CT
VREF
VCC
OUTPUT
GROUND
DIL-8, SOIC-8N or J PACKAGE, D8 PACKAGE
(TOP VIEW)
NC No internal connection
1
2
3
4
5
6
7
14
13
12
11
10
9
8
COMP
NC
VFB
NC
ISENSE
NC
RT/CT
SOIC-14, CFP-14
D or W PACKAGE
(TOP VIEW)
VREF
NC
VCC
VC
OUTPUT
GROUND
PWR GND
3 2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
VCC
VC
NC
OUTPUT
NC
NC
VFB
NC
ISENSE
NC
PLCC-20
Q PACKAGE
(TOP VIEW)
NC
COMP
NC
PWRGND
GROUND
NC
NC
NC
RT/CT
VREF
U C 1 8 4 2 / 3 / 4 / 5
U C 2 8 4 2 / 3 / 4 / 5
U C 3 8 4 2 / 3 / 4 / 5 S L U S 2 2 3 C A P R I L 1 9 9 7 R E V I S E D J U N E 2 0 0 7
U N I T
L o w i m p e d a n c e s o u r c e 3 0 V S u p p l y v o l t a g e
I C C < 3 0 m A S e l f L i m i t i n g
O u t p u t c u r r e n t 1 A
O u t p u t e n e r g y ( c a p a c i t i v e l o a d ) 5 JA n a l o g i n p u t s ( P i n s 2 , 3 ) 0 . 3 V t o 6 . 3 V
E r r o r a m p o u t p u t s i n k c u r r e n t 1 0 m A
TA 2 5 C ( D I L - 8 ) 1 W
P o w e r d i s s i p a t i o n T A 2 5 C ( S O I C - 1 4 ) 7 2 5 m W
TA 2 5 C ( S O I C - 8 ) 6 5 0 m W
S t o r a g e t e m p e r a t u r e r a n g e 6 5 C t o 1 5 0 C
J u n c t i o n t e m p e r a t u r e r a n g e 5 5 C t o 1 5 0 C
L e a d t e m p e r a t u r e ( s o l d e r i n g , 1 0 s e c o n d s ) 3 0 0 C
( 1 ) A l l v o l t a g e s a r e w i t h r e s p e c t t o P i n 5 . A l l c u r r e n t s a r e p o s i t i v e i n t o t h e s p e c i f i e d t e r m i n a l . C o n s u l t P a c k a g i n g S e c t i o n o f D a t a b o o k f o r t h e r m a l l i m i t a t i o n s a n d c o n s i d e r a t i o n s o f p a c k a g e s .
2 S u b m i t D o c u m e n t a t i o n F e e d b a c k
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7/28/2019 Slus223c Current Mode PWM Controller (Rev. C)
3/27
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Temp Stability+V
REF(max)*VREF (min)
TJ(max)* TJ (min) VR E F ( m a x ) a n d V R E F ( m i n ) a r e t h e m a x i m u m a n d m i n i m u m r e f e r e n c e v o l t a g e s m e a s u r e d o v e r
T H E R M A L C H A R A C T E R I S T I C S
D I S S I P A T I O N R A T I N G S
E L E C T R I C A L C H A R A C T E R I S T I C S
U C 1 8 4 2 / 3 / 4 / 5
U C 2 8 4 2 / 3 / 4 / 5
U C 3 8 4 2 / 3 / 4 / 5 S L U S 2 2 3 C A P R I L 1 9 9 7 R E V I S E D J U N E 2 0 0 7
o v e r o p e r a t i n g f r e e - a i r t e m p e r a t u r e r a n g e ( u n l e s s o t h e r w i s e n o t e d )
P A C K A G E J C J A
D I L - 8 J 2 8 ( 1 ) 1 2 5 - 1 6 0
N 2 5 1 1 0 ( 2 )
S O I C - 8 D 8 4 2 8 4 - 1 6 0 ( 2 )
S O I C - 1 4 D 1 4 3 5 5 0 - 1 2 0 ( 2 )
C F P - 1 4 W 5 . 4 9 C / W 1 7 5 . 4 C / W
P L C C - 2 0 Q 3 4 4 3 - 7 5 ( 2 )
( 1 ) J C d a t a v a l u e s s t a t e d w e r e d e r i v e d f r o m M I L - S T D - 1 8 3 5 B . ( 2 ) S p e c i f i e d J A ( j u n c t i o n t o a m b i e n t ) i s f o r d e v i c e s m o u n t e d t o 5 i n
2 F R 4 P C b o a r d w i t h o n e o u n c e c o p p e r w h e r e n o t e d . W h e n r e s i s t a n c e r a n g e i s g i v e n , l o w e r v a l u e s a r e f o r 5 i n 2. T e s t P W B w a s 0 . 0 6 2 i n t h i c k a n d t y p i c a l l y u s e d 0 . 6 3 5 - m m t r a c e w i d t h s f o r p o w e r p a c k a g e s a n d 1 . 3 - m m t r a c e w i d t h s f o r n o n - p o w e r p a c k a g e s w i t h 1 0 0 x 1 0 0 - m i l p r o b e l a n d a r e a a t t h e e n d o f e a c h t r a c e .
TA 2 5 C D E R A T I N G F A C T O R T A 7 0 C TA 8 5 C P O T A 1 2 5 CP A C K A G E P O W E R R A T I N G A B O V E T A 2 5 C P O W E R R A T I N G W E R R A T I N G P O W E R R A T I N G
W 7 0 0 m W 5 . 5 m W / C 4 5 2 m W 3 7 0 m W 1 5 0 m W
U n l e s s o t h e r w i s e s t a t e d , t h e s e s p e c i f i c a t i o n s a p p l y f o r 5 5 C TA 1 2 5 C f o r t h e U C 1 8 4 X ; 4 0 C TA 8 5 C f o r t h e
U C 2 8 4 X ; 0 C TA 7 0 C f o r t h e 3 8 4 X ; V C C = 1 5 V ( 1 ); RT = 1 0 k ; CT = 3 . 3 n F , T A = TJ.
U C 1 8 4 2 / 3 / 4 / 5 U C 3 8 4 2 / 3 / 4 / 5
U C 2 8 4 2 / 3 / 4 / 5 P A R A M E T E R T E S T C O N D I T I O N S U N I T
M I N T Y P M A X M I N T Y P M A X
R E F E R E N C E S E C T I O N
O u t p u t V o l t a g e T J = 2 5 C , I O = 1 m A 4 . 9 5 5 . 0 0 5 . 0 5 4 . 9 0 5 . 0 0 5 . 1 0 V
L i n e R e g u l a t i o n 1 2 VI N 2 5 V 6 2 0 6 2 0 m V
L o a d R e g u l a t i o n 1 I0
2 0 m A 6 2 5 6 2 5
T e m p . S t a b i l i t y S e e ( 2 ) ( 3 ) 0 . 2 0 . 4 0 . 2 0 . 4 m V / C
T o t a l O u t p u t V a r i a t i o n L i n e , l o a d , t e m p a t u r e ( 2 ) 4 . 9 5 . 1 4 . 8 2 5 . 1 8 V
O u t p u t N o i s e V o l t a g e 1 0 H z f 1 0 k H z , T J = 2 5 C( 2 ) 5 0 5 0 V
L o n g T e r m S t a b i l i t y T A = 1 2 5 C , 1 0 0 0 H r s ( 2 ) 5 2 5 5 2 5 m V
O u t p u t S h o r t C i r c u i t 3 0 1 0 0 1 8 0 3 0 1 0 0 1 8 0 m A
O S C I L L A T O R S E C T I O N
I n i t i a l A c c u r a c y T J = 2 5 C( 4 ) 4 7 5 2 5 7 4 7 5 2 5 7 k H z
V o l t a g e S t a b i l i t y 1 2 VC C 2 5 V 0 . 2 % 1 % 0 . 2 % 1 %
T e m p . S t a b i l i t y T M I N TA TM A X( 2 ) 5 % 5 %
A m p l i t u d e V P I N 4 p e a k - t o - p e a k ( 2 ) 1 . 7 1 . 7 V
( 1 ) A d j u s t V C C a b o v e t h e s t a r t t h r e s h o l d b e f o r e s e t t i n g a t 1 5 V .
( 2 ) T h e s e p a r a m e t e r s , a l t h o u g h s p e c i f i e d , a r e n o t 1 0 0 % t e s t e d i n p r o d u c t i o n . ( 3 ) T e m p e r a t u r e s t a b i l i t y , s o m e t i m e s r e f e r r e d t o a s a v e r a g e t e m p e r a t u r e c o e f f i c i e n t , i s d e s c r i b e d b y t h e e q u a t i o n :
t h e a p p r o p r i a t e t e m p e r a t u r e r a n g e . N o t e t h a t t h e e x t r e m e s i n v o l t a g e d o n o t n e c e s s a r i l y o c c u r a t t h e e x t r e m e s i n t e m p e r a t u r e . ( 4 ) O u t p u t f r e q u e n c y e q u a l s o s c i l l a t o r f r e q u e n c y f o r t h e U C 1 8 4 2 a n d U C 1 8 4 3 .
O u t p u t f r e q u e n c y i s o n e h a l f o s c i l l a t o r f r e q u e n c y f o r t h e U C 1 8 4 4 a n d U C 1 8 4 5 .
3S u b m i t D o c u m e n t a t i o n F e e d b a c k
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( 7 ) G a i n d e f i n e d a s : A+
DVPIN 1DVPIN 3
, 0v VPIN 3v 0.8 V
U C 1 8 4 2 / 3 / 4 / 5
U C 2 8 4 2 / 3 / 4 / 5
U C 3 8 4 2 / 3 / 4 / 5 S L U S 2 2 3 C A P R I L 1 9 9 7 R E V I S E D J U N E 2 0 0 7
E L E C T R I C A L C H A R A C T E R I S T I C S ( c o n t i n u e d )
U n l e s s o t h e r w i s e s t a t e d , t h e s e s p e c i f i c a t i o n s a p p l y f o r 5 5 C TA 1 2 5 C f o r t h e U C 1 8 4 X ; 4 0 C TA 8 5 C f o r t h e U C 2 8 4 X ; 0 C TA 7 0 C f o r t h e 3 8 4 X ; V C C = 1 5 V ; R T = 1 0 k ; CT = 3 . 3 n F , T A = TJ.
U C 1 8 4 2 / 3 / 4 / 5 U C 3 8 4 2 / 3 / 4 / 5
U C 2 8 4 2 / 3 / 4 / 5 P A R A M E T E R T E S T C O N D I T I O N S U N I T
M I N T Y P M A X M I N T Y P M A X
E R R O R A M P S E C T I O N
I n p u t V o l t a g e V P I N 1 = 2 . 5 V 2 . 4 5 2 . 5 0 2 . 5 5 2 . 4 2 2 . 5 0 2 . 5 8 V
I n p u t B i a s C u r r e n t 0 . 3 1 0 . 3 2 A
AV O L 2 VO 4 V 6 5 9 0 6 5 9 0 d B
U n i t y G a i n B a n d w i d t h T J = 2 5 C( 5 ) 0 . 7 1 0 . 7 1 M H z
P S R R 1 2 VC C 2 5 V 6 0 7 0 6 0 7 0 d B
O u t p u t S i n k C u r r e n t V P I N 2 = 2 . 7 V , V P I N 1 = 1 . 1 V 2 6 2 6 m A
O u t p u t S o u r c e C u r r e n t V P I N 2 = 2 . 3 V , V P I N 1 = 5 V 0 . 5 0 . 8 0 . 5 0 . 8
VO U T H i g h V P I N 2 = 2 . 3 V , R L = 1 5 k t o g r o u n d 5 6 5 6 V
VO U T L o w V P I N 2 = 2 . 7 V , R L = 1 5 k t o P i n 8 0 . 7 1 . 1 0 . 7 1 . 1
C U R R E N T S E N S E S E C T I O N
G a i n S e e ( 6 ) ( 7 )
2 . 8 5 3 3 . 1 5 2 . 8 5 3 3 . 1 5 V / V M a x i m u m I n p u t S i g n a l V P I N 1 = 5 V
( 6 ) 0 . 9 1 1 . 1 0 . 9 1 1 . 1 V
P S R R 1 2 VC C 2 5 V( 5 ) ( 6 ) 7 0 7 0 d B
I n p u t B i a s C u r r e n t 2 1 0 2 1 0 A
D e l a y t o O u t p u t V P I N 3 = 0 V t o 2 V ( 5 ) 1 5 0 3 0 0 1 5 0 3 0 0 n s
O U T P U T S E C T I O N
I S I N K = 2 0 m A 0 . 1 0 . 4 0 . 1 0 . 4 O u t p u t L o w L e v e l
I S I N K = 2 0 0 m A 1 . 5 2 . 2 1 . 5 2 . 2 V
I S O U R C E = 2 0 m A 1 3 1 3 . 5 1 3 1 3 . 5 O u t p u t H i g h L e v e l
I S O U R C E = 2 0 0 m A 1 2 1 3 . 5 1 2 1 3 . 5
R i s e T i m e T J = 2 5 C , C L = 1 n F ( 5 ) 5 0 1 5 0 5 0 1 5 0
n sF a l l T i m e T J = 2 5 C , CL = 1 n F
( 5 ) 5 0 1 5 0 5 0 1 5 0
U N D E R - V O L T A G E L O C K O U T S E C T I O N
X 8 4 2 / 4 1 5 1 6 1 7 1 4 . 5 1 6 1 7 . 5 S t a r t T h r e s h o l d
X 8 4 3 / 5 7 . 8 8 . 4 9 . 0 7 . 8 8 . 4 9 . 0 V
X 8 4 2 / 4 9 1 0 1 1 8 . 5 1 0 1 1 . 5 M i n . O p e r a t i n g V o l t a g e A f t e r T u r n O n X 8 4 3 / 5 7 . 0 7 . 6 8 . 2 7 . 0 7 . 6 8 . 2
P W M S E C T I O N
X 8 4 2 / 3 9 5 % 9 7 % 1 0 0 % 9 5 % 9 7 % 1 0 0 % M a x i m u m D u t y C y c l e
X 8 4 4 / 5 4 6 % 4 8 % 5 0 % 4 7 % 4 8 % 5 0 %
M i n i m u m D u t y C y c l e 0 % 0 %
T O T A L S T A N D B Y C U R R E N T
S t a r t - U p C u r r e n t 0 . 5 1 0 . 5 1 m A
O p e r a t i n g S u p p l y C u r r e n t V P I N 2 = VP I N 3 = 0 V 1 1 1 7 1 1 1 7 VC C Z e n e r V o l t a g e r I C C = 2 5 m A 3 0 3 4 3 0 3 4 V
( 5 ) T h e s e p a r a m e t e r s , a l t h o u g h s p e c i f i e d , a r e n o t 1 0 0 % t e s t e d i n p r o d u c t i o n . ( 6 ) P a r a m e t e r m e a s u r e d a t t r i p p o i n t o f l a t c h w i t h V P I N 2 = 0 .
4 S u b m i t D o c u m e n t a t i o n F e e d b a c k
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E R R O R A M P C O N F I G U R A T I O N
_
+
2.5 V
2
1
VFB
COMPZF
ZI
0.5 mA
U N D E R - V O L T A G E L O C K O U T
VCC
-
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O S C I L L A T O R S E C T I O N
8
4
5
VREF
RT/CT
GROUND
RT
CT
For RT> 5 K f ~1.72
RTCT
30
10
3
1
0.3
td
ms
1 2.2 4.7 10 22 47 100
CT nF
Deadtime vs CT (RT >5 kW)
RT
(k
)W
100
30
10
3100 1 k 10 k 100 k 1 M
f Frequency Hz
Timing Resistance vs Frequency
O U T P U T S A T U R A T I O N C H A R A C T E R I S T I C S
4
3
2
1
0
.01 .02 .03 .04 .05 .07 .1 .2 .3 .4 .5 .7 1
SINK SAT (VOL)
SOURCE SAT
(VCCVOH)
VCC = 15 V
TA = 25C
TA = 55C
Output Current, Source or Sink A
aturaton
o
tage
E R R O R A M P L I F I E R O P E N - L O O P F R E Q U E N C Y R E S P O N S E
80
60
40
20
0
0
45
90
135
180
otage
an
PhaseMargin
Av
10 100 1 k 10 k 100 k 1 M 10 M
f Frequency Hz
U C 1 8 4 2 / 3 / 4 / 5
U C 2 8 4 2 / 3 / 4 / 5
U C 3 8 4 2 / 3 / 4 / 5 S L U S 2 2 3 C A P R I L 1 9 9 7 R E V I S E D J U N E 2 0 0 7
6 S u b m i t D o c u m e n t a t i o n F e e d b a c k
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O P E N - L O O P L A B O R A T O R Y F I X T U R E
4.7 kW
1 kWERROR AMP
ADJUST
4.7 kW
5 kW
ISENSEADJUST
2N2222
100 kW
R1
1
2
3
4
8
7
6
5
COMP
UC1842
VFB
ISENSE
RT / CT
CT
0.1 mF
0.1 mF
A
1 kW 1 W
VREF
VCC
OUTPUT
GROUND
VREF
VCC
OUTPUT
GROUND
S H U T D O W N T E C H N I Q U E S
8
3
1 kW
330W
SHUTDOWN
500W
To Current
SENSE RESISTOR
VREF
ISENSE
1
SHUTDOWN
COMP
U C 1 8 4 2 / 3 / 4 / 5
U C 2 8 4 2 / 3 / 4 / 5
U C 3 8 4 2 / 3 / 4 / 5 S L U S 2 2 3 C A P R I L 1 9 9 7 R E V I S E D J U N E 2 0 0 7
H i g h p e a k c u r r e n t s a s s o c i a t e d w i t h c a p a c i t i v e l o a d s n e c e s s i t a t e c a r e f u l g r o u n d i n g t e c h n i q u e s . T i m i n g a n d b y p a s c a p a c i t o r s s h o u l d b e c o n e c t e d c l o s e t o p i n 5 i n a s i n g l e p o i n t g r o u n d . T h e t r a n s i s t o r a n d 5 k p o t e n t i o m e t e r a r e u s e d t o s a m p l e t h e o s c i l l a t o r w a v e f o r m a n d a p p l y a n a d j u s t a b l e r a m p t o p i n 3 .
S h u t d o w n o f t h e U C 1 8 4 2 c a n b e a c c o m p l i s h e d b y t w o m e t h o d s ; e i t h e r r a i s e p i n 3 a b o v e 1 V o r p u l l p i n 1 b e l o w a v o l t a g e t w o d i o d e d r o p s a b o v e g r o u n d . E i t h e r m e t h o d c a u s s e s t h e o u t p u t o f t h e P W M c o m p a r a t o r t o b e h i g h ( r e f e r t o b l o c k d i a g r a m ) . T h e P W M l a t c h i s r e s e t d o m i n a n t s o t h a t t h e o u t p u t w i l l r e m a i n l o w u n t i l t h e n e x t c l o c k c y c l e a f t e r t h e s h u t d o w n c o n d i t i o n a t p i n 1 a n d / o r 3 i s r e m o v e d . I n o n e e x a m p l e , a n e x t e r n a l l y l a t c h e d s h u t d o w n m a y b e a c c o m p l i s h e d b y a d d i n g a n S C R w h i c h w i l l b e r e s e t b y c y c l i n g V C C b e l o w t h e l o w e r U V L O t h r e s h o l d . A t t h i s p i n t t h e r e f e r e n c e t u r n s o f f , a l l o w i n g t h e S C R t o r e s e t .
7S u b m i t D o c u m e n t a t i o n F e e d b a c k
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O F F L I N E F L Y B A C K R E G U L A T O R
R15 1 W
117 VAC VARO
VM 68 C1250 F250 V
R256 k
2 W
R124.7 k
2 W
C9
3300 pF
600 VNP
D41N3613
D21N3612
D31N3612
NC
R320 k
R44.7 k
C447 F25 V
R968 3 W
C3
22 F
C2100 F
25 V72
1
8
4 5
3
6
UC3844
R5 150 k
C14
100 pF
R610 k
C50.01 F
C60.0022 F
USD1120
R722
R8
1 k
C7470 pFR1320 k
R10
0.55 1 W
Q1UFN833
U9D946
N5 C104700 F
10 V
C114700 F10 V
+6 V
COM
+12 V
12 V COM
12 V
D7UF81002
N12
N12
C122200 F16 V
C132200 F16 V
D8UES1002
C8680 pF600 V
D81N3613
R11
2.7 k2 W
P o w e r S u p p l y S p e c i f i c a t i o n s
S L O P E C O M P E N S A T I O N
8
4
3
VREF
RT / CT
ISENSE
UC1842/3
0.1 mF RT
CT
R1
R2
C
ISENSE
RSENSE
U C 1 8 4 2 / 3 / 4 / 5
U C 2 8 4 2 / 3 / 4 / 5
U C 3 8 4 2 / 3 / 4 / 5 S L U S 2 2 3 C A P R I L 1 9 9 7 R E V I S E D J U N E 2 0 0 7
1 . I n p u t V o l t a g e s
a . 5 V A C t o 1 3 0 V A ( 5 0 H z / 6 0 H z )
2 . L i n e I s o l a t i o n : 3 7 5 0 V
3 . S w i t c h n g F r e q u e n c y : 4 0 k H z
4 . E f f i c i e n c y a t F u l l L o a d 7 0 %
5 . O u t p u t V o l t a g e :
a . + 5 V , 5 % ; 1 A t o 4 A l o a d
R i p p l e v o l t a g e : 5 0 m V P - P M a x b . + 1 2 V , 3 % ; 0 . 1 A t o 0 . 3 A l o a d
R i p p l e v o l t a g e : 1 0 0 m V P - P M a x c . 1 2 V , 3 % ; 0 . 1 A t o 0 . 3 A l o a d
R i p p l e v o l t a g e : 1 0 0 m V P - P M a x
A f r a c t i o n o f t h e o s c i l l a t o r r a m p c a n b e r e s i s t i v e l y s u m m e d w i t h t h e c u r r e n t s e n s e s i g n a l t o p r o v i d e s l o p e c o m p e n s a t i o n f o r c o n v e r t e r s r e q u i r i n g d u t y c y c l e s o v e r 5 0 % .
8 S u b m i t D o c u m e n t a t i o n F e e d b a c k
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PACKAGING INFORMATION
Orderable Device Status(1) Package Type Package
DrawingPins Package Qty Eco Plan
(2) Lead/Ball Finish
MSL Peak Temp(3) Samples
(Requires Login)
5962-8670401PA ACTIVE CDIP JG 8 1 TBD Call TI Call TI
5962-8670401XA ACTIVE LCCC FK 20 1 TBD Call TI Call TI
5962-8670402PA ACTIVE CDIP JG 8 1 TBD Call TI Call TI
5962-8670402XA ACTIVE LCCC FK 20 1 TBD Call TI Call TI
5962-8670403PA ACTIVE CDIP JG 8 1 TBD Call TI Call TI5962-8670403XA ACTIVE LCCC FK 20 1 TBD Call TI Call TI
5962-8670404DA ACTIVE CFP W 14 1 TBD Call TI Call TI
5962-8670404PA ACTIVE CDIP JG 8 1 TBD Call TI Call TI
5962-8670404XA ACTIVE LCCC FK 20 1 TBD Call TI Call TI
UC1842J ACTIVE CDIP JG 8 1 TBD A42 N / A for Pkg Type
UC1842J883B ACTIVE CDIP JG 8 1 TBD A42 N / A for Pkg Type
UC1842L883B ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type
UC1842W ACTIVE CFP W 14 1 TBD A42 N / A for Pkg Type
UC1843J ACTIVE CDIP JG 8 1 TBD A42 N / A for Pkg Type
UC1843J883B ACTIVE CDIP JG 8 1 TBD A42 N / A for Pkg Type
UC1843L ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type
UC1843L883B ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type
UC1843W ACTIVE CFP W 14 1 TBD A42 N / A for Pkg Type
UC1844J ACTIVE CDIP JG 8 1 TBD A42 N / A for Pkg Type
UC1844J883B ACTIVE CDIP JG 8 1 TBD A42 N / A for Pkg Type
UC1844L883B ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type
UC1845J ACTIVE CDIP JG 8 1 TBD A42 N / A for Pkg Type
UC1845J883B ACTIVE CDIP JG 8 1 TBD A42 N / A for Pkg Type
UC1845L ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type
UC1845L883B ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type
UC1845W ACTIVE CFP W 14 1 TBD A42 N / A for Pkg Type
UC1845W883B ACTIVE CFP W 14 1 TBD A42 N / A for Pkg Type
UC2842D ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
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Addendum-Page 2
Orderable Device Status(1) Package Type Package
DrawingPins Package Qty Eco Plan
(2) Lead/Ball Finish
MSL Peak Temp(3) Samples
(Requires Login)
UC2842D8 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2842D8G4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2842D8TR ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2842D8TRG4 ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2842DG4 ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2842DTR ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2842DTRG4 ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2842J OBSOLETE CDIP JG 8 TBD Call TI Call TI
UC2842N ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC2842NG4 ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC2843D ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2843D8 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2843D8G4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2843D8TR ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2843D8TRG4 ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2843DG4 ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2843DTR ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2843DTRG4 ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2843J OBSOLETE CDIP JG 8 TBD Call TI Call TI
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Addendum-Page 3
Orderable Device Status(1) Package Type Package
DrawingPins Package Qty Eco Plan
(2) Lead/Ball Finish
MSL Peak Temp(3) Samples
(Requires Login)
UC2843N ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC2843NG4 ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC2844D ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2844D8 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2844D8G4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2844D8TR ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2844D8TRG4 ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2844DG4 ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2844DTR ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2844DTRG4 ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2844N ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC2844NG4 ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC2845D ACTIVE SOIC D 14 50 Green (RoHS& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
UC2845D8 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2845D8G4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2845D8TR ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2845D8TRG4 ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2845DG4 ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
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Addendum-Page 4
Orderable Device Status(1) Package Type Package
DrawingPins Package Qty Eco Plan
(2) Lead/Ball Finish
MSL Peak Temp(3) Samples
(Requires Login)
UC2845DTR ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2845DTRG4 ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC2845J OBSOLETE CDIP JG 8 TBD Call TI Call TI
UC2845N ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC2845NG4 ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC3842D ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3842D8 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3842D8G4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3842D8TR ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3842D8TRG4 ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3842DG4 ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3842DTR ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3842DTRG4 ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3842N ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC3842NG4 ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC3843D ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3843D8 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3843D8G4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
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Orderable Device Status(1) Package Type Package
DrawingPins Package Qty Eco Plan
(2) Lead/Ball Finish
MSL Peak Temp(3) Samples
(Requires Login)
UC3843D8TR ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3843D8TRG4 ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3843DG4 ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3843DTR ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3843DTRG4 ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3843N ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC3843NG4 ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC3843QTR OBSOLETE PLCC FN 20 TBD Call TI Call TI
UC3844D ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3844D8 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3844D8G4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3844D8TR ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3844D8TRG4 ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3844DG4 ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3844DTR ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3844DTRG4 ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3844N ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC3844NG4 ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC3845AJ ACTIVE CDIP JG 8 1 TBD A42 N / A for Pkg Type
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Addendum-Page 6
Orderable Device Status(1) Package Type Package
DrawingPins Package Qty Eco Plan
(2) Lead/Ball Finish
MSL Peak Temp(3) Samples
(Requires Login)
UC3845D ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3845D8 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3845D8G4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3845D8TR ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3845D8TRG4 ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3845DG4 ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3845DTR ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3845DTRG4 ACTIVE SOIC D 14 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
UC3845N ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
UC3845NG4 ACTIVE PDIP P 8 50 Green (RoHS
& no Sb/Br)
CU NIPDAU N / A for Pkg Type
(1)
The marketing status values are defined as follows:ACTIVE: Product device recommended for new designs.LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontentfor the latest availabilityinformation and additional product content details.TBD: The Pb-Free/Green conversion plan has not been defined.Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement thatlead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used betweenthe die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weightin homogeneous material)
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PACKAGE OPTION ADDENDUM
www.ti.com 5-Sep-2011
Addendum-Page 7
(3)MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on informationprovided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken andcontinues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
OTHER QUALIFIED VERSIONS OF UC1842, UC1843, UC1844, UC1845, UC3842, UC3843, UC3844, UC3845, UC3845AM :
Catalog: UC3842, UC3843, UC3844, UC3845, UC3842M, UC3845A
Military: UC1842, UC1843, UC1844, UC1845
Space: UC1842-SP, UC1843-SP, UC1844-SP, UC1845-SP
NOTE: Qualified Version Definitions:
Catalog - TI's standard catalog product
Military - QML certified for Military and Defense Applications
Space - Radiation tolerant, ceramic packaging and qualified for use in Space-based application
http://focus.ti.com/docs/prod/folders/print/uc1845-sp.htmlhttp://focus.ti.com/docs/prod/folders/print/uc1844-sp.htmlhttp://focus.ti.com/docs/prod/folders/print/uc1843-sp.htmlhttp://focus.ti.com/docs/prod/folders/print/uc1842-sp.htmlhttp://focus.ti.com/docs/prod/folders/print/uc1845.htmlhttp://focus.ti.com/docs/prod/folders/print/uc1844.htmlhttp://focus.ti.com/docs/prod/folders/print/uc1843.htmlhttp://focus.ti.com/docs/prod/folders/print/uc1842.htmlhttp://focus.ti.com/docs/prod/folders/print/uc3845a.htmlhttp://focus.ti.com/docs/prod/folders/print/uc3842m.htmlhttp://focus.ti.com/docs/prod/folders/print/uc3845.htmlhttp://focus.ti.com/docs/prod/folders/print/uc3844.htmlhttp://focus.ti.com/docs/prod/folders/print/uc3843.htmlhttp://focus.ti.com/docs/prod/folders/print/uc3842.html -
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TAPE AND REEL INFORMATION
*All dimensions are nominal
Device PackageType
PackageDrawing
Pins SPQ ReelDiameter
(mm)
ReelWidth
W1 (mm)
A0 (mm) B0 (mm) K0 (mm) P1(mm)
W(mm) Q
UC2842D8TR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0
UC2842DTR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0
UC2843D8TR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0
UC2843DTR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0
UC2844D8TR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0
UC2844DTR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0
UC2845D8TR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0
UC2845DTR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0
UC3842D8TR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0
UC3842DTR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0
UC3843D8TR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0
UC3843DTR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0
UC3844D8TR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0
UC3844DTR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0
UC3845D8TR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0
UC3845DTR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0
PACKAGE MATERIALS INFORMATION
www.ti.com 19-Mar-2008
Pack Materials-Page 1
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*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
UC2842D8TR SOIC D 8 2500 340.5 338.1 20.6
UC2842DTR SOIC D 14 2500 333.2 345.9 28.6
UC2843D8TR SOIC D 8 2500 340.5 338.1 20.6
UC2843DTR SOIC D 14 2500 333.2 345.9 28.6
UC2844D8TR SOIC D 8 2500 340.5 338.1 20.6
UC2844DTR SOIC D 14 2500 333.2 345.9 28.6
UC2845D8TR SOIC D 8 2500 340.5 338.1 20.6
UC2845DTR SOIC D 14 2500 333.2 345.9 28.6
UC3842D8TR SOIC D 8 2500 340.5 338.1 20.6
UC3842DTR SOIC D 14 2500 333.2 345.9 28.6
UC3843D8TR SOIC D 8 2500 340.5 338.1 20.6
UC3843DTR SOIC D 14 2500 333.2 345.9 28.6
UC3844D8TR SOIC D 8 2500 340.5 338.1 20.6
UC3844DTR SOIC D 14 2500 333.2 345.9 28.6
UC3845D8TR SOIC D 8 2500 340.5 338.1 20.6
UC3845DTR SOIC D 14 2500 333.2 345.9 28.6
PACKAGE MATERIALS INFORMATION
www.ti.com 19-Mar-2008
Pack Materials-Page 2
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MECHANICAL DATA
MCER001A JANUARY 1995 REVISED JANUARY 1997
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
JG (R-GDIP-T8) CERAMIC DUAL-IN-LINE
0.310 (7,87)
0.290 (7,37)
0.014 (0,36)
0.008 (0,20)
Seating Plane
4040107/C 08/96
5
4
0.065 (1,65)
0.045 (1,14)
8
1
0.020 (0,51) MIN
0.400 (10,16)
0.355 (9,00)
0.015 (0,38)
0.023 (0,58)
0.063 (1,60)
0.015 (0,38)
0.200 (5,08) MAX
0.130 (3,30) MIN
0.245 (6,22)
0.280 (7,11)
0.100 (2,54)
015
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. This package can be hermetically sealed with a ceramic lid using glass frit.
D. Index point is provided on cap for terminal identification.
E. Falls within MIL STD 1835 GDIP1-T8
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MECHANICAL DATA
MPLC004A OCTOBER 1994
1POST OFFICE BOX 655303 DALLAS, TEXAS 75265
FN (S-PQCC-J**) PLASTIC J-LEADED CHIP CARRIER
4040005/ B 03/95
20 PIN SHOWN
0.026 (0,66)
0.032 (0,81)
D2/E2
0.020 (0,51) MIN
0.180 (4,57) MAX0.120 (3,05)
0.090 (2,29)
D2/E2
0.013 (0,33)
0.021 (0,53)
Seating Plane
MAX
D2/E2
0.219 (5,56)
0.169 (4,29)
0.319 (8,10)
0.469 (11,91)
0.569 (14,45)
0.369 (9,37)
MAX
0.356 (9,04)
0.456 (11,58)
0.656 (16,66)
0.008 (0,20) NOM
1.158 (29,41)
0.958 (24,33)
0.756 (19,20)
0.191 (4,85)
0.141 (3,58)
MIN
0.441 (11,20)
0.541 (13,74)
0.291 (7,39)
0.341 (8,66)
18
19
14
13
D
D1
13
9
E1E
4
8
MINMAXMIN
PINS**
20
28
44
0.385 (9,78)
0.485 (12,32)
0.685 (17,40)
52
68
84 1.185 (30,10)
0.985 (25,02)
0.785 (19,94)
D/E
0.395 (10,03)
0.495 (12,57)
1.195 (30,35)
0.995 (25,27)
0.695 (17,65)
0.795 (20,19)
NO. OF D1/E1
0.350 (8,89)
0.450 (11,43)
1.150 (29,21)
0.950 (24,13)
0.650 (16,51)
0.750 (19,05)
0.004 (0,10)
M0.007 (0,18)
0.050 (1,27)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-018
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