EV3336-C-00A Dual-Channel Flash LED Driver With 2A/Ch and I2C Interface Evaluation Board The Future of Analog IC Technology DESCRIPTION FEATURES The MP3336 is a dual-channel and high-power flash LED driver with very compact package. It can drive up to 2A in flash mode for each LED. It is usually applied for camera phones to improve image and video quality in low light environment. The device operates in1/2/3/4MHz synchronous, current-mode PWM boost converter to regulate the LED current with two high current source. The MP3336 provides an optimized solution for smaller PCB space and higher efficiency. The MP3336 features standard I2C interface, dual LED channels, rich protection modes and high power density and performances. It supports flash/assist/torch/indicator/5V DC modes. The cathodes of the dual flash LED are referenced to GND, which is better for layout to improve thermal performance. It is available in WLCSP20-1.6X2.0mm package. ELECTRICAL SPECIFICATIONS Parameter Symbol Value Units Input Voltage VIN 2.7-5.5 V Output Voltage Vout <5.5 V LEDs # LED Current/Ch 2 ILED Max.2 A 2.7V~5.5V Input Voltage 1/2/3/4MHz Selectable Max Switching Frequency Switching Frequency Fold-Back Function 400kHz I2C Compatible Interface Standby/Flash/Assist/Torch/Indicator/5V DC Modes Flash Mode: Up to 2A/Ch Programmable Current with +/7% Accuracy for Each LED, 7.84mA/Step Assist/Torch Mode: Up to 319mA/Ch Programmable Current with +/-7% Accuracy for Each LED, 1.25mA/Step Indicator Mode: Work In 31.5kHz PWM Dimming Mode With 2/16, 3/16, 4/16, 5/16 Duty Cycle Used for Blinking and 128/256/512ms Selectable Blinking Time 5V DC Mode: Output Constant 5V DC Voltage 1A to 4.2A Programmable Input DC Current Limit Protection External Torch/Strobe/TX Pin LED Forward Voltage Balance to Improve Efficiency VIN to VOUT Disconnection Function Low Battery Voltage Protection LED Short/Open Protection VOUT-GND Short Protection Over Voltage Protection Over Temperature Protection Input Under Voltage Lockout Protection Available In WLCSP20-1.6X2.0mm APPLICATIONS Smart Phone Flash LED Application Cameras for Tablet 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. EV3366-C-00A Rev.1.0 www.MonolithicPower.com 2/2/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 1 EV3336-C-00A- DUAL-CHANNEL FLASH LED DIRVER WITH I2C INTERFACE EV3336-C-00A EVALUATION BOARD (L x W x H) 5.5cm x 5.5cm x 1cm Board Number MPS IC Number EV3336-C-00A MP3336GC EVALUATION BOARD SCHEMATIC L1 1.1uH/3.5A SW A2 SW IN D1 R1 0 1 B2 2 GND 1 PGND VOUT LED1 LED2 GND A1 PGND B1 PGND C1 AGND AGND C3 C4 10uF C3 NC PGND R6 0 1 1 C1 NC 1 C2 10uF C2 1 PGND AGND STROBE E3 1 1 1 1 1 TORCH VIN 2 1 OUT A3 OUT B4 LED1 A4 LED1 R7 C4 0 D4 TX E4 ENABLE D3 SCL D2 OUT B3 1 VIN R2 NC E2 TEMP E1 U1 MP3336 AGND 1 1 1 AGND LED2 LED2 3.3V R3 NC SDA 1 1 1 1 R4 NTC resistor NC R5 NC 1 VIN VIN GND TOR STR TX IN ENABLE GND 3.3V SCL GND SDA TEMP PGND PGND EV3366-C-00A Rev.1.0 www.MonolithicPower.com 2/2/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 2 EV3336-C-00A- DUAL-CHANNEL FLASH LED DIRVER WITH I2C INTERFACE EV3336-C-00A BILL OF MATERIALS Item 1 Ref C1 Value NC 1 C2,C4 10μF 2 1 1 1 C3 R1,R6,R7 R2,R3,R4,R5 L1 NC 0 NC 1.1μH 1 U1 Description Footprint 0603 Manufacturer ceramic capacitor,10V,X5R 0805 muRata res,1% 0805 0603 0603 Yageo 1.1uA, 20m,3.46A MP3336 CSP20 1.6*2mm Manufacturer P/N GRM21BR61A106KE19L RC0603FR-070RL TDK D53LC-#A915AY-1R1M MPS MP3336 EV3366-C-00A Rev.1.0 www.MonolithicPower.com 2/2/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 3 EV3336-C-00A- DUAL-CHANNEL FLASH LED DIRVER WITH I2C INTERFACE EVB TEST RESULTS Performance waveforms are tested on the evaluation board. VIN = 3.6V, L = 1.1µH, I1/2_TOR = 300mA, I1/2_FL = 400mA, I1/2_TX = 400mA, FL_TIM = 200ms, 2 Channel. Unless otherwise noted. VSW 2V/div. VOUT 2V/div. IL 200mA/div. VSW 2V/div. VOUT 2V/div. VSW 2V/div. VOUT 2V/div. IL 200mA/div. IL 200mA/div. ILED 200mA/div. ILED 200mA/div. ILED 200mA/div. VSW 2V/div. VSW 2V/div. VSTR 2V/div. VSTR 2V/div. IL 500mA/div. IL 500mA/div. ILED 500mA/div. ILED 500mA/div. VSW 2V/div. VTX 5V/div. VSW 2V/div. VSW 2V/div. VOUT 2V/div. IL 200mA/div. ILED 200mA/div. VSW 2V/div. VOUT 5V/div. IL 2A/div. ILED1 1A/div. VSTR 2V/div. IL 1A/div. IL 500mA/div. ILED 1A/div. ILED 500mA/div. EV3366-C-00A Rev.1.0 www.MonolithicPower.com 2/2/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 4 EV3336-C-00A- DUAL-CHANNEL FLASH LED DIRVER WITH I2C INTERFACE EVB TEST RESULTS Performance waveforms are tested on the evaluation board. VIN = 3.6V, L = 1.1µH, I1/2_TOR = 300mA, I1/2_FL = 400mA, I1/2_TX = 400mA, FL_TIM = 200ms, 2 Channel. Unless otherwise noted. VSW 2V/div. VOUT 2V/div. ILED1 100mA/div. ILED2 100mA/div. VSW 2V/div. VOUT 2V/div. IL 200mA/div. IOUT 20mA/div. VSW 2V/div. VOUT 2V/div. IL 500mA/div. ILED 500mA/div. VSW 2V/div. VOUT 2V/div. VSW 2V/div. VOUT 2V/div. IL 500mA/div. IL 500mA/div. IL 500mA/div. ILED 500mA/div. ILED 500mA/div. ILED 1A/div. VSW 2V/div. VOUT 2V/div. VSW 2V/div. VOUT 2V/div. VOUT 2V/div. VNTC 2V/div. IL 500mA/div. IL 200mA/div. ILED 200mA/div. ILED 500mA/div. EV3366-C-00A Rev.1.0 www.MonolithicPower.com 2/2/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 5 EV3336-C-00A- DUAL-CHANNEL FLASH LED DIRVER WITH I2C INTERFACE PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Layer Figure 2—Bottom Layer EV3366-C-00A Rev.1.0 www.MonolithicPower.com 2/2/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 6 EV3336-C-00A- DUAL-CHANNEL FLASH LED DIRVER 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. Supply the EN terminal with logical signal. 3. Connect the positive and negative terminals of the LED to the LED1/2 pin and GND on the EV board, respectively. 4. Please connect SCL, SDA and GND of EV board to SCL, SDA and GND of a programmable kit with I2C interface, respectively. 5. When work in Torch mode, please pull torch terminal to high. When work in flash mode with hardware trigger mode, please give a level or pulse signal to STR pin. NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. 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. EV3366-C-00A Rev.1.0 www.MonolithicPower.com 2/2/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 7