AC to DCVoltage

Conditioning

Controller

RectificationDrivers Load

ControllerV/I

Sense

Power

Transmitter Receiver

bq51003

bq500210

Communication

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,intellectual property matters and other important disclaimers. PRODUCTION DATA.

bq51003SLUSBC8B DECEMBER 2013REVISED MARCH 2017

bq51003 Highly Integrated Wireless Receiver Qi (WPC v1.2) Compliant Power Supply

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1 Features1 Integrated Wireless Power Supply Receiver

Solution - Optimized for 2.5-W Applications 93% Overall Peak AC-DC Efficiency Full Synchronous Rectifier WPC v1.2 Compliant Communication Control Output Voltage Conditioning Only IC Required Between Rx coil and Output

Wireless Power Consortium (WPC) v1.2Compliant (FOD Enabled) Highly AccurateCurrent Sense

Dynamic Rectifier Control for Improved LoadTransient Response

Dynamic Efficiency Scaling for OptimizedPerformance Over Wide Range of Output Power

Adaptive Communication Limit for RobustCommunication

Supports 20-V Maximum Input Low-power Dissipative Rectifier Overvoltage

Clamp (VRECT-OVP = 15 V) Thermal Shutdown Multifunction NTC and Control Pin for

Temperature Monitoring, Charge Complete andFault Host Control

2 Applications WPC Compliant Receivers Cell Phones and Smart Phones Headsets Digital Cameras Portable Media Players Hand-held Devices

3 DescriptionThe bq51003 is an advanced, integrated, receiver ICfor wireless power transfer in portable applicationsoptimized for 2.5-W and below applications. Thedevice provides the AC-DC power conversion whileintegrating the digital control required to comply withthe Qi v1.2 communication protocol. Together withthe bq500210 transmitter controller, the bq51003enables a complete contact-less power transfersystem for a wireless power supply solution. By usingnear-field inductive power transfer, the receiver coilembedded in the portable device receives the powertransmitted by the transmitter coil through mutuallycoupled inductors. The AC signal from the receivercoil is then rectified and regulated to be used as apower supply for down-system electronics. Globalfeedback is established from the secondary to thetransmitter to stabilize the power transfer processthrough back-scatter modulation. This feedback isestablished by using the Qi v1.2 communicationprotocol supporting up to 2.5-W applications.

The device integrates a low-impedance fullsynchronous rectifier, low-dropout regulator, digitalcontrol, and accurate voltage and current loops.

Device Information(1)PART NUMBER PACKAGE BODY SIZE (NOM)

bq51003 DSBGA (28) 1.90 mm x 3.00 mm

(1) For all available packages, see the orderable addendum atthe end of the data sheet.

Wireless Power Consortium (WPC or Qi) InductivePower System

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Table of Contents1 Features .................................................................. 12 Applications ........................................................... 13 Description ............................................................. 14 Revision History..................................................... 25 Device Comparison Table ..................................... 36 Pin Configuration and Functions ......................... 37 Specifications......................................................... 5

7.1 Absolute Maximum Ratings ...................................... 57.2 ESD Ratings.............................................................. 57.3 Recommended Operating Conditions....................... 57.4 Thermal Information .................................................. 67.5 Electrical Characteristics........................................... 67.6 Typical Characteristics .............................................. 8

8 Detailed Description ............................................ 118.1 Overview ................................................................. 118.2 Functional Block Diagram ....................................... 128.3 Feature Description................................................. 12

8.4 Device Functional Modes........................................ 249 Application and Implementation ........................ 25

9.1 Application Information............................................ 259.2 Typical Applications ................................................ 25

10 Power Supply Recommendations ..................... 3211 Layout................................................................... 32

11.1 Layout Guidelines ................................................. 3211.2 Layout Example .................................................... 32

12 Device and Documentation Support ................. 3312.1 Device Support...................................................... 3312.2 Receiving Notification of Documentation Updates 3312.3 Community Resources.......................................... 3312.4 Trademarks ........................................................... 3312.5 Electrostatic Discharge Caution............................ 3312.6 Glossary ................................................................ 33

13 Mechanical, Packaging, and OrderableInformation ........................................................... 33

4 Revision HistoryNOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision A (June 2016) to Revision B Page

Changed From: WPC v1.1 To: WPC v1.2 throughout the document..................................................................................... 1

Changes from Original (December 2013) to Revision A Page

Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementationsection, Power Supply Recommendations section, Layout section, Device and Documentation Support section, andMechanical, Packaging, and Orderable Information section. ................................................................................................. 1

Removed Ordering Information table and Package Summary section, see POA at the end of the data sheet ................... 1

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F1TS-CTRL

E1COMM2

D1OUT

C1BOOT2

B1AC2

A1PGND

F2FOD

E2CLAMP2

D2OUT

C2RECT

B2AC2

A2PGND

D3OUT

C3RECT

E4COMM1

D4OUT

C4BOOT1

B4AC1

E3CLAMP1

B3AC1

F3/AD-EN

A4PGND

G1ILIM

A3PGND

G2EN2

G3EN1

G4AD

F4/CHG

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5 Device Comparison Table

DEVICE FUNCTION VOUT (VBAT-REG) PROTOCOL MAXIMUM POUT I2Cbq51003 Wireless Receiver 5 V Qi v1.2 2.5 W Nobq51013B Wireless Receiver 5 V Qi v1.1 5 W Nobq51010B Wireless Receiver 7 V Qi v1.1 5 W Nobq51020 Wireless Receiver 4.5 to 8 V Qi v1.1 5 W Nobq51021 Wireless Receiver 4.5 to 8 V Qi v1.1 5 W Yesbq51221 Dual Mode Wireless Receiver 4.5 to 8 V Qi v1.1, PMA 5 W Yesbq51025 Wireless Receiver 4.5 to 10 V Qi v1.2 (in 5 W mode) 10 W Yesbq51050B Wiress Receiver and Direct Charger 4.2 V Qi v1.1 5 W Nobq51051B Wiress Receiver and Direct Charger 4.35 V Qi v1.1 5 W Nobq51052B Wiress Receiver and Direct Charger 4.4 V Qi v1.1 5 W No

(1) Enabled if EN2 is low and disabled if EN2 is high(2) Communication current limit is disabled for 1 second at start-up

Table 1. Available Options

DEVICE FUNCTION WPCVERSION VRECT-OVP VOUT-(REG)OVER

CURRENTSHUTDOWN

AD-OVP TERMINATION COMMUNICATIONCURRENT LIMIT (1) (2)

bq51003 5-V PowerSupply v1.2 15 V 5 V Disabled Disabled Disabled Adaptive + 1 s Hold-Off

6 Pin Configuration and Functions

YFP Package28-Pin DSBGA

Top View

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Pin FunctionsPIN

I/O DESCRIPTIONNAME NO.AC1 B3, B4 I

AC input from receiver coil antenna.AC2 B1, B2 I

AD G4 IConnect this pin to the wired adapter input. When a voltage is applied to this pin wireless charging isdisabled and AD_EN is driven low. Connect to GND through a 1 F capacitor. If unused, capacitor isnot required and should be grounded directly.

AD-EN F3 O

Push-pull driver for external PFET connecting AD and