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700kHz Synchronous Boost WLED Driver Evaluation Board EV3366-G-00A Rev.1.0 www.MonolithicPower.com 1 9/25/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. The Future of Analog IC Technology

DESCRIPTION

The MP3306 is a step-up converter designed for driving white LEDs from 3V to 12V power supply. The MP3306 uses current mode, fixed frequency architecture to regulate the LED current, which is measured through an external high-side current sense resistor. The low 202mV feedback voltage and synchronous rectification reduces power loss and improves efficiency. The MP3306 is turned off if an over-voltage condition is present due to an open circuit condition. The output disconnect feature allows the output to be completely discharged. TheMP3306 includes under-voltage lockout, current limiting, output short protection and thermal overload protection. The MP3306 is available in small 12-pin QFN (2mm x 2mm) package. ELECTRICAL SPECIFICATIONS Parameter Symbol Value Units Input Voltage V IN 3-12 V Output Voltage Vout <30 V LED String 1 LED Current I LED 20 mA

FEATURES

 3V~12V Input Voltage  Analog Dimming and PWM Dimming  Output-to-Input Disconnect in Shutdown Mode  Programmable Open Load Shutdown  Output Short Protection  Low 202mV Feedback Voltage with +/-3% accuracy  UVLO, Thermal Shutdown  Available in 2mm x 2mm QFN12 Package

APPLICATIONS

 Smart Phone, MID, PDA  Digital Still Cameras  Small LCD Displays 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.

EV3306-G-00A 700kHz SYNCHRONOUS STEP-UP WHITE LED DRIVER EV3366-G-00A Rev.1.0 www.MonolithicPower.com 2 9/25/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. EV3306-G-00A EVALUATION BOARD (L x W x H) 5.0cm x 4.6cm x 0.46cm Board Number MPS IC Number EV3306-G-00A MP3306EG EVALUATION BOARD SCHEMATIC 1 2 4.7uF/25V NC NC 0R5 10nF 1uF/10V 1 2 NC 10k R9 21 NC

1 LED-

1 LED+

10uH, 1.14A GND DIM 1uF/25V EN VIN 0.47uF/25V NC R10 Vout Vout NCNC R11 VCC VCC 2 1 JP2 GND 8 EN3 IN1 L 12 SW 9 FB 7 BST 11 VCC2 PWMO5 OUT 10 PWM I4 OVP6 MP3306 2 1 JP3

EV3306-G-00A 700kHz SYNCHRONOUS STEP-UP WHITE LED DRIVER EV3366-G-00A Rev.1.0 www.MonolithicPower.com 3 9/25/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. EV3306-G-00A BILL OF MATERIALS Qty Ref Value Description Package Manufacturer Part Number 1 C1 4.7 μF Ceramic capacitor, X5R, 16V 0805 TDK C2012X5R1C475K

2 C2, C9 NC Ceramic capacitor 0805

2 C3, C5 NC Ceramic capacitor 0603

1 C4 1uF Ceramic

capacitor,X5R, 6.3V 0603 muRata GRM188R60J1105KA01D

1 C6 10nF Ceramic

capacitor,25V 0603 muRata GRM188R71E103JA01D

1 C7 1 μF Ceramic

capacitor,X7R, 25V 0805 TDK C2012X7R1E105K 1 C8 0.47 μF Ceramic capacitor,X7R, 25V 0805 muRata GRM21BR71E474KA01L

1 R1,R3 100k Ω Film resistor, 1% 0603 Yageo RC0603FR-07100KL

3 R2, R5,

R10 0 Film resistor, 1% 0603 Yageo RC0603FR-070L

3 R4, R7,

1 R6 10 Ω Film resistor, 1% 0805 Yageo RC0805FR-0710RL

1 R8 200k Ω Film resistor, 1% 0603 Yageo RC0603FR-07200KL

1 R9 10k Ω Film resistor, 1% 0603 Yageo RC0603FR-0710KL

1 JP1 NC

2 JP2, JP3 Short

1 D1 NC SMD

1 L 10 μH Rdcr=59mΩ,

Isat=1.14A SMD TOKO D63LCB-A921CY- 100M=P3

1 U1 MP3306 QFN12,

2mm*2mm MPS

EV3306-G-00A 700kHz SYNCHRONOUS STEP-UP WHITE LED DRIVER EV3366-G-00A Rev.1.0 www.MonolithicPower.com 4 9/25/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. EVB TEST RESULTS Performance waveforms are tested on the evaluation board. VIN=5V, VEN=5V, 8 LEDs in series, 20mA, unless otherwise noted. VSW 10V/div. IINDUCTOR 200mA/div. VOUT 10V/div. Steady State VIN = 3V VSW 10V/div. VEN 5V/div. IL 100mA/div. ILED 20mA/div. EN Startup EN Shutdown VSW 10V/div. VOUT 10V/div. ILED 20mA/div. VPWM 5V/div. VSW 10V/div. VOUT 5V/div. ILED 10mA/div. VPWM 5V/div. VSW 10V/div. VOUT 10V/div. ILED 20mA/div. VOVP 500mV/div. VSW 10V/div. VOUT 10V/div. IL 500mA/div. IOUT 200mA/div. VSW 10V/div. VOUT 10V/div. IL 100mA/div. ILED 20mA/div. Efficiency VIN (V) 2 4 6 8 10 12 14 VSW 10V/div. VEN 5V/div. IL 100mA/div. ILED 20mA/div.

EV3306-G-00A 700kHz SYNCHRONOUS STEP-UP WHITE LED DRIVER NOTICE: The information in this document is subject to change wi thout notice. Please contact M PS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights ar e not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. EV3366-G-00A Rev.1.0 www.MonolithicPower.com 6 9/25/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. QUICK START GUIDE 1. Connect the positive and negative terminals of the power supply (3V ~ 12V) to the VIN and GND pins on the EV board, respectively. 2. LED string is connected to LED+ and LED- terminal respectively; 3. Drive EN pin high to enable the MP3306. 4. The DIM terminal is used for Analog/PWM dimming. When LPF capacitor is place at the PWO pin, MP3306 works in analog dimming mode by filtering the input PMW pulse. When PWM pin is float, MP3306 works in PWM dimming mode. 5. The LED current is set by the resistor at FB pin. 6. MP3306 has a N-channel MOS, which is used to accomplish short Vout to GND protection and disconnecting Vout from Vin at shutdown mode. if don ’t need this function, it can be disabled by short the JP2.