EV3332-C-00A Dual channel, 1.5A/Ch Flash LED Driver With I2C Interface Evaluation Board The Future of Analog IC Technology DESCRIPTION FEATURES The MP3332 is a dual-channels flash LED driver with very compact package, high efficiency for high-resolution camera phones to improve image and video quality in low light environment. The synchronous boost converter operates in 1/2/3/4MHz to provide an optimized solution for smaller PCB space and higher efficiency. • • • • • The MP3332 features standard I2C interface, dual LED channels, rich protection modes and high power density and performances. The MP3332 supports flash/assist light/torch/indicator/5V DC modes. The cathodes of the dual flash LED are referenced to GND for better layout to improve thermal performance. It is available in WLCSP161.65X1.65mm package. ELECTRICAL SPECIFICATIONS Parameter Symbol Value Units Input Voltage VIN 2.7-5.5 V Output Voltage Vout <5.5 V • • mA • LED channel LED Current/Ch 2 ILED 1500 • • • • • • 2.7V~5.5V input voltage Dual-channels, 1.5A/ch flash current with +/-7% accuracy 1/2/3/4MHz selectable switching frequency and switching frequency fold-back function 400kHz I2C compatible interface Standby/Flash/Assist/Torch/Indicator/5V DC modes Flash Mode: Up to 1.5A programmable current with +/7% accuracy for each LED Assist/Torch Mode: Up to 500mA/ch programmable current with +/-7% accuracy Indicator Mode: Work in 31.5kHz PWM operation with 2/16, 3/16, 4/16, 5/16 duty cycle 128ms/256ms/512ms selectable blinking time 5V DC Mode: Constant 5V DC Output External Torch/Strobe Pin LED forward voltage balance to improve efficiency 1A to 4.2A programmable input DC current limit protection Low battery voltage protection LED short/open protection Over voltage protection Over temperature protection Input under voltage lockout protection Available in WLCSP16-1.65X1.65mm APPLICATIONS • • • LED Flash Application For Smart Phone Camera For Tablets Digital Still Camera All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. EV3332-C-00A Rev.1.0 www.MonolithicPower.com 8/14/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 1 EV3332-C-00A-DUAL CHANNEL, 1.5A/CH FLASH LED DRIVER WITH I2C INTERFACE EV3332-C-00A EVALUATION BOARD (L x W x H) 5.0cm x 4.6cm x 3.0cm Board Number MPS IC Number EV3332-C-00A MP3332GC EVALUATION BOARD SCHEMATIC L1 1.2uH /4.3A 1 PGND 1 R1 NC R5 0 C3 NC D4 1 STR 1 1 R2 NC AGND SCL GND SDA 1 A 3 B3 C1 10uF 2 VOUT 2 1 SW VIN V O U T A 2 B2 V IN 1 U1 MP 3332 D3 SCL LED 1 A1 D2 SD A LED 2 B1 1 C3 STR N TC D1 TX 1 C2 TX TOR 1 C1 TO R AGND C2 10uF 1 R6 0 VLED1 R7 0 PG N D A 4 B4 R3 100k C4 R4 100k V SS 1 VLED2 R8 NC C4 NC 1 PGND AGND EV3332-C-00A Rev.1.0 www.MonolithicPower.com 8/14/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 2 EV3332-C-00A-DUAL CHANNEL, 1.5A/CH FLASH LED DRIVER WITH I2C INTERFACE EV3332-C-00A BILL OF MATERIALS Qty 2 3 Ref R3,R4 R6,R7,R5 R1,R2, R8 Value 100k 0 2 C1,C2 10uF 2 C3, C4 NC 1 L1 1.2uH 1 U1 3 Description res,5% res,1% NC Package 0603 0603 Manufacturer Yageo Yageo Part Number RC0603JR-07100KL RC0603FR-070RL 0603 Ceramic Capacitor,10V,X5R 0805 muRata Inductor, DCR=25m,IDC=4.3A SMD TDK LTF-5022T-1R2N4R2 CSP16/1.65*1.65 MPS MP3332 GRM21BR61A106KE19L EV3332-C-00A Rev.1.0 www.MonolithicPower.com 8/14/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 3 EV3332-C-00A-DUAL CHANNEL, 1.5A/CH FLASH LED DRIVER WITH I2C INTERFACE EVB TEST RESULTS Performance waveforms are tested on the evaluation board. VIN = 3.6V, 1*LEDs, FL_TIM=100ms, L = 1.2µH, TA = 25°C, unless otherwise noted. VLED 2V/div. IL 200mA/div. VLED 2V/div. VOUT 5V/div. VSW 2V/div. IL 100mA/div. IL 200mA/div. VOUT 2V/div. ILED 200mA/div. ILED 100mA/div. VOUT 2V/div. ILED 100mA/div. VSW 2V/div. VSW 2V/div. VSW 2V/div. IL 100mA/div. VOUT 2V/div. ILED 100mA/div. VOUT 2V/div. ILED1 200mA/div. VOUT 2V/div. IL 200mA/div. ILED2 200mA/div. ILED 100mA/div. VLED1 500mV/div. VLED2 500mV/div. VSW 2V/div. VSW 2V/div. VSTR 5V/div. VTX 5V/div. IL 1A/div. IL 1A/div. ILED 500mA/div. ILED 500mA/div. ILED1 100mA/div. ILED2 100mA/div. EV3332-C-00A Rev.1.0 www.MonolithicPower.com 8/14/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 4 EV3332-C-00A-DUAL CHANNEL, 1.5A/CH FLASH LED DRIVER WITH I2C INTERFACE EVB TEST RESULTS (continued) VIN = 3.6V, 1*LEDs, FL_TIM=100ms, L = 1.2µH, TA = 25°C, unless otherwise noted. VSW 2V/div. VOUT 5V/div. IL 500mA/div. ILED 200mA/div. VSW 2V/div. VSW 2V/div. VOUT 5V/div. IL 500mA/div. ILED 200mA/div. VSW 2V/div. VOUT 5V/div. IL 1A/div. ILED 500mA/div. VOUT 2V/div. VNTC 500mV/div. VOUT 2V/div. IL 1A/div. ILED1 200mA/div. ILED 500mA/div. ILED2 200mA/div. EV3332-C-00A Rev.1.0 www.MonolithicPower.com 8/14/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 5 EV3332-C-00A-DUAL CHANNEL, 1.5A/CH FLASH LED DRIVER WITH I2C INTERFACE PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Layer Figure 2—Bottom Layer EV3332-C-00A Rev.1.0 www.MonolithicPower.com 8/14/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 6 EV3332-C-00A-DUAL CHANNEL, 1.5A/CH FLASH LED DRIVER WITH I2C INTERFACE QUICK START GUIDE 1. Connect the positive and negative terminals of the power supply (2.7V ~ 5.5V) to the VIN and GND pins on the EV board, respectively. 2. Connect the positive and negative terminals of the LED to the LED terminal and GND on the EV board, respectively. 3. Please connect SCL, SDA and GND of EV board to SCL, SDA and GND of a programmable kit with I2C interface, respectively. I2C is active only when Vin powers on. 4. When work in Torch mode, please pull torch terminal to high. When work in flash mode with hardware level or edge sensitive, please give a level or pulse signal to STR pin. It is OK that STR is float or connected to a high/level if trigger flash with software. NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. EV3332-C-00A Rev.1.0 www.MonolithicPower.com 8/14/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 7