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www.seoulsemicon.com Copyright Seoul Semiconductor Co., Ltd.
Acrich application note
for MJT5050
Acrich development
H.S.Park
2014.04.30
www.seoulsemicon.com Copyright Seoul Semiconductor Co., Ltd.
Legal Disclaimer
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products and/or business operation. While Seoul Semiconductor has made every attempt
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for the results obtained from the use of this information.
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information in this presentation or for any consequential, special or similar damages, even
if advised of the possibility of such damages.
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Acrich Application Note for
MJT SAW8LH0A(Warm), SAW0LH0A(Cool)
Introduction
Acrich2 Modular Solutions Overview
Seoul Semiconductor has introduced a family of standard modules called the Acrich2.
These modules consist of the latest generation of LEDs that use the Patented Acrich die technology and
the newly developed Acrich Integrated Circuit (Acrich IC), that provides a simple off line converter solution
with multi channel current control and doesn't require temperature sensitive passive components like
electrolytic capacitors.
Using these standard modules as reference designs, it is a simple task to create custom modules to meet
a wide variety of applications. This application note describes the operation of the Acrich IC and provides
implementation details for creating custom Acrich module configurations.
Key Application
General lighting
Architectural lighting
LED Bulbs
Decorative / Pathway lighting
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Table of contents
1. Component
1.1 MJT5050 Description ……………………………………………………………………………………………………….. 3
1.2 Acrich IC – DT3001X ………………………………………………………………………………………………………... 4
1.3 Acrich Technical Workbook for AIC ………………………………………………………………………………………... 4
1.4 Handling Precautions ………………………………………………………………………………………........................ 5
1.5 Optical Characteristics & Mechanical File support …………………………………………………….………………... 5
1.6 PCB design guide for MJT5050 ………………………………………………………………………………………........ 6
2. Acrich Module Configuration for MJT5050
2.1 Basic Schematics – 220V 8W ………………………………………………………………………………………........... 7
2.2 Light Output Characteristics VS Package quantities – 220V 8W ………………………………………………………. 8
2.3 Basic Schematics – 220V 12W …………………………………………………………………………………………….. 9
2.4 Light Output Characteristics VS Package quantities – 220V 12W …………………………………………………….. 10
2.5 Basic Schematics – 220V 16W …………………………………………………………………………………………….. 11
2.6 Light Output Characteristics VS Package quantities – 220V 16W …………………………………………………….. 12
3. Acrich Module Samples
3.1 Bulb type module – 220V 13W …………………………………………………………………………………………….. 13
3.2 Outdoor Engine module – 220V 30W ……………………………………………………………………………………... 14
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1. Component
Parameter Symbol Value
Unit Min. Typ. Max.
Luminous Flux Φv 136 155 - lm
Correlated Color Temperature CCT 2600 - 3700 K
CRI[4] Ra 80 - - -
Forward Voltage VF 60 63 68 V
Power Dissipation Pd - 1.26 - W
Viewing Angle 2Θ1/2 - 120 - deg.
Thermal resistance (J to S) Rθj-s - 6.0 - K/W
ESD Sensitivity(HBM) - 5k - - V
Table 2. Electro – Optical Characteristics, Ta=25ºC
IF [mA] VF [V] Power [W] Φv [lm] lm/W
10 60.3 0.60 80.2 133.7
20 (Typ.) 63.8 1.28 150.2 117.3
30 66.7 2.00 212.5 106.3
40 69.3 2.77 269.3 97.2
50 71.6 3.58 321.4 89.8
60 73.6 4.42 369.7 83.6
Table 1. Characteristics, IF=20mA, Ta=25ºC
Figure1. MJT5050 Image. Warm White part no is SAW8LH0A and Cool White part no is SAW0LH0A
Warm White Cool White
Figure2. Package mechanical dimension of MJT5050
1.1 MJT5050 Description
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Item Acrich2.5 (2nd Generation/Acrich2+)
Power Factor > 0.97
THD < 15%
EMI Performance No Filter Required (Up to 32W)
Power Adjust 1W ~ 16W
Switching Step 120Vrms 4Setp, 20 – 65V (Per step)
(Free voltage IC) 220Vrms
Dimming AC – Triac/Phase Cut Improved but still based on Dimmer
0 to 10V Analog Dimming Optional
Over Temperature Protection Tj Min. 140 ~ Max. 150 (@θJC 135) [1]
Package Type
1~16W, Max.17W
QFN. 6mmX6mm
(External Bridge Diode) Note
[1] θJC : The package thermal impedance is calculated in accordance with JESD 51-14.
1. Component
1.2 Acrich IC – DT3001X
Main Features
High Power Factor > 0.95
Rated Power : 4W/8W/12W/16W
Low Total Harmonic Distortion <15%
Over Temperature Protection
Adjustable LED Driving Current with
External Resistors
Analog Dimming Function (ADIM)
Thermally Enhanced 12 QFN (6 x 6 mm)
1.3 Acrich Technical Workbook for AIC
For more information about the Acrich operation principle and condition, marketing team provide the document. To access this information,
go to seoul semiconductor intranet. Move the mouse pointer to the “Collaboration” tab and select “Teamsite”. On the left menu of the teamsite,
click on the “SSC-Marketing “ window. And then click the menu “Acrich” of the Lighting Product.
Figure3. Package image and main features of the Acrich AIC. DT3001X performance is good with Acrich MJT series.
Table 3. DT3001X features.
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1. Component
1.4 Handling Precautions
During processing, mechanical stress on the surface should be minimized as much as possible. Sharp objects of all types should not be used to
pierce the sealing compound.
In general, LEDs should only be handled from the side. By the way, this also applies to LEDs without a silicone sealant, since the surface can
also become scratched.
When populating boards in SMT production, there are basically no restrictions regarding the form of the pick and place nozzle, except that
mechanical pressure on the surface of the resin must be prevented. This is assured by choosing a pick and place nozzle which is larger than
the LED’s reflector area.
Silicone differs from materials conventionally used for the manufacturing of LEDs. These conditions must be considered during the handling
of such devices. Compared to standard encapsulants, silicone is generally softer, and the surface is more likely to attract dust. As mentioned
previously, the increased sensitivity to dust requires special care during processing. In cases where a minimal level of dirt and dust particles
cannot be guaranteed, a suitable cleaning solution must be applied to the surface after the soldering of components.
SSC suggests using isopropyl alcohol for cleaning. In case other solvents are used, it must be assured that these solvents do not dissolve the
package or resin. Ultrasonic cleaning is not recommended. Ultrasonic cleaning may cause damage to the LED.
Please do not mold this product into another resin (epoxy, urethane, etc) and do not handle this product with acid or sulfur material in sealed
space.
Avoid leaving fingerprints on silicone resin parts.
1.5 Optical Characteristics & Mechanical Files support
Optical characteristics and mechanical file for MJT5050 are available on the Seoul-semiconductor website at www.seoulsemicon.com
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PKG Center line
Foot Print(solder mask)
PKG Pad
PKG Body
Copper design within PKG electrode
Figure4. Recommended PCB footprint design for the MJT5050. In order to good performance for heat dissipation from the MJT5050 electrodes to the PCB, it is best to extend the top copper layer of the PCB as much as possible.
PKG Center line
Foot Print(solder mask)
PKG Pad
PKG Body
2,61,80
,8
4,4
0,6
0,4
※ Dimensions=mm
1. Component
1.6 PCB design guide for MJT5050
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2. Acrich module configuration for MJT5050
2.1 Basic Schematics – 220V 8W
Fuse
FUSE
V1MOV
~1
~2
-3
+4
BD1
BD
12
Z1TVS
D1MJT5050
D2MJT5050
D3MJT5050
D4MJT5050
R2 91Ω
R1 91Ω
1Vac(-)
1Vac(+)
1
2
3
4 5 6
7
8
9
10
11
12
Acrich2.5
IC
U1
Rbld1kΩ
Rset 740Ω
Condition Input Voltage : 220Vrms
8W (LED Q’ty)
Array Circuit Series Parallel
Stage1 1 1
Stage2 1 1
Stage3 1 1
Stage4 1 1
No. of LED 4 pcs
Figure5. Recommended module schematic for 220V 8W using SAW80LH0A / SAW0LH0A
Index Unit Reference value
Package Flux bin : W1 (167lm)
Flux lm 740
CCT K 3000
Ra - 82
Efficacy lm/W 91.4
Power W 8.1
PF - 0.993
Table 4. Acrich MJT constructions of basic schematic for 220V 8W. And right side table shows reference experimental measured value.
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2. Acrich module configuration for MJT5050
2.2 Light Output Characteristics VS Package quantities – 220V 8W
LED Q’ty(ea) 4 5 6 7 8 9 10 11 12 13 14 15 16
Array Circuit Series Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel
Stage1 1 1 2 2 2 2 3 3 3 3 4 4 4 4
Stage2 1 1 1 2 2 2 2 3 3 3 3 4 4 4
Stage3 1 1 1 1 2 2 2 2 3 3 3 3 4 4
Stage4 1 1 1 1 1 2 2 2 2 3 3 3 3 4
Lig
ht O
utp
ut C
ha
racte
ristics
Flu
x(l
m)
LED package quantities(ea)
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1.30
4 5 6 7 8 9 10 11 12 13 14 15 16
Flux(lm) Flux(lm)
Table 5. Acrich MJT constructions of multiple schematic for 220V 8W.
Figure 6. Light output characteristics vs. LED package quantities to 220V 8W
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2. Acrich module configuration for MJT5050
2.3 Basic Schematics – 220V 12W
Fuse
FUSE
V1MOV
~1
~2
-3
+4
BD1
BD
12
Z1TVS
D1MJT5050
D2MJT5050
D3MJT5050
D4MJT5050
R2 91Ω
R1 91Ω
1Vac(-)
1Vac(+)
1
2
3
4 5 6
7
8
9
10
11
12
Acrich2.5
IC
U1
Rbld1kΩ
Rset 1.14kΩ
D5MJT5050
D6MJT5050
D7MJT5050
D8MJT5050
Figure.7 Recommended module schematic for 220V 12W using SAW80LH0A
Table 6. Acrich MJT constructions of basic schematic for 220V 12W. And right side table shows reference experimental measured value.
Condition Input Voltage : 220Vrms
12W (LED Q’ty)
Array Circuit Series Parallel
Stage1 1 2
Stage2 1 2
Stage3 1 2
Stage4 1 2
No. of LED 8 pcs
Index Unit Reference value
Package Flux bin : W1 (167lm)
Flux lm 1255
CCT K 3000
Ra - 82
Efficacy lm/W 104
Power W 12
PF - 0.993
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2. Acrich module configuration for MJT5050
2.4 Light Output Characteristics VS Package quantities – 220V 12W
LED Q’ty(ea) 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Array Circuit Series Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel
Stage1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5 5 5 5
Stage2 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5 5 5
Stage3 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5 5
Stage4 1 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1.30
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Flux(lm)
Flux(lm)
Lig
ht O
utp
ut C
ha
racte
ristics
Flu
x(l
m)
LED package quantities(ea)
Table 7. Acrich MJT constructions of multiple schematic for 220V 12W.
Figure 8. Light output characteristics vs. LED package quantities to 220V 12W
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2. Acrich module configuration for MJT5050
2.5 Basic Schematics – 220V 16W
Fuse
FUSE
V1MOV
~1
~2
-3
+4
BD1
BD
12
Z1TVS
D1MJT5050
D2MJT5050
D3MJT5050
D4MJT5050
R2 91Ω
R1 91Ω
1Vac(-)
1Vac(+)
1
2
3
4 5 6
7
8
9
10
11
12
Acrich2.5
IC
U1
Rbld1kΩ
Rset 1.65kΩ
D5MJT5050
D6MJT5050
D7MJT5050
D8MJT5050
D9MJT5050
D10MJT5050
D11MJT5050
D12MJT5050
Figure 9. Recommended module schematic for 220V 16W using SAW80LH0A
Table 8. Acrich MJT constructions of basic schematic for 220V 16W. And right side table shows reference experimental measured value.
Condition Input Voltage : 220Vrms
16W (LED Q’ty)
Array Circuit Series Parallel
Stage1 1 3
Stage2 1 3
Stage3 1 3
Stage4 1 3
No. of LED 12 pcs
Index Unit Reference value
Package Flux bin : W1 (167lm)
Flux lm 1750
CCT K 3000
Ra - 82
Efficacy lm/W 109
Power W 16.1
PF - 0.993
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2. Acrich module configuration for MJT5050
2.6 Light Output Characteristics VS Package quantities – 220V 16W
LED Q’ty(ea) 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Array Circuit Series Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel Parallel
Stage1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5 5 5 5
Stage2 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5 5 5
Stage3 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5 5
Stage4 1 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1.30
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Flux(lm)
Flux(lm)
Lig
ht O
utp
ut C
ha
racte
ristics
Flu
x(l
m)
LED package quantities(ea)
Table 9. Acrich MJT constructions of multiple schematic for 220V 16W.
Figure 10. Light output characteristics vs. LED package quantities to 220V 16W
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3. Acrich module Samples
3.1 Bulb type module – 220V 13W
Index Unit Reference value
Package Flux bin : W1 (167lm)
Flux lm 1150
CCT K 3000
Ra - 82
Efficacy lm/W 90
Power W 12.7
PF - 0.993
1
2
3
4 5 6
7
8
9
10
11
12
Acrich2.5
IC
U1
Acrich2.5 IC
RsetRES
11
-
AC PAD
11
+
AC PAD
D1LED
D5LED
D2LED
D3LED
D4LED
LED Module
Part Details Unit Q'ty
LED PKG MJT5050 EA 5.0
PCB Metal 1.0T / D=40mm / Cu=1oz / White PSR / OSP EA 1.0
Acrich2 IC DT3001B EA 1.0
Resistor Rset / R1608 / 1.3kΩ EA 1.0
Resistor Rbld / R1608 / 1.0kΩ EA 1.0
Figure 11. Sample image of Acrich 13W module using SAW8LH0A
Table 10. Reference value of 13W module. It is enough to 60W equivalent bulb for Energy star.
Table 11. Part List of 13W module.
Figure 12. Schematic of 13W sample module using DX3001X
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3. Acrich module Samples
3.2 Outdoor Engine module – 220V 30W
Index Unit Reference value
Package Flux bin : W2 (185lm)
Flux lm 3600
CCT K 4900
Ra - 73
Efficacy lm/W 117
Power W 31
PF - 0.995
Figure 13. Sample image of Acrich 30W module using SAW0LH0A
Table 12. Reference value of 13W module. It is enough to 60W equivalent bulb for Energy star.
LED Module
Part Details Unit Q'ty
LED PKG MJT5050 EA 16.0
PCB Metal 1.0T / D=161x67mm / Cu=1oz / White PSR / OSP EA 1.0
Acrich2 IC DT3001B EA 2.0
Resistor Rset / R1608 / 1.52kΩ EA 2.0
Resistor Rbld / R1608 / 1kΩ EA 2.0
SPC
Fuse 443 Series (250VAC 1A) EA 1.0
Varistor 8S17SM251T6 / V430CH8 EA 2.0
B.Diode MB6S EA 1.0
Resistor 6432 Size, 91옴, 5% EA 4.0
Tvs P6SMB-440A EA 2.0
Figure 14. Schematic of 30W sample module using DX3001X
Fuse
FUSE
V1MOV
~1
~2
-3
+4
BD1
BD
12
Z1TVS
D1LED
D2LED
D3LED
D4LED
D5LED
D6LED
D7LED
D8LED
R291ohm
R1
91ohm
Rs1RES
V2MOV
1Vac(-)
WAGO2060-401
1Vac(+)
WAGO2060-401
11
Tc1
AC PAD
11
Tc2
AC PAD
12
Z2TVS
D9LED
D10LED
D11LED
D12LED
D13LED
D14LED
D15LED
D16LED
Rs2RES
1
2
3
4 5 6
7
8
9
10
11
12
Acrich2.5
IC
*Acrich2.5 IC
1
2
3
4 5 6
7
8
9
10
11
12
Acrich2.5
IC
U2Acrich2.5 IC
R3
91ohmR4
91ohm
J1
RES
Table 13. Part List of 30W module.
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