MP3331

2A, Synchronous Boost Flash LED Driver

with I

MP3331 Rev. 1.02

www.MonolithicPower.com

1

5/3/2016

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2016 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP3331 is a highly-efficient, 2A, single flash

LED driver in a very compact package for high-

resolution camera phones that improves image and

video quality in low-light environments. The device

operates in a 1/2/3/4MHz synchronous DC/DC

boost converter to provide an optimized solution for

smaller PCB spaces with higher efficiency.

single LED channel, rich protection modes, and

high power density and performances. It supports

flash/assist/torch/indicator/5V DC modes.

The cathode of the flash LED is referenced to GND,

which improves thermal performance. It is available

in a WLCSP9-1.7mm x 1.7mm package.

FEATURES

 2.7V to 5.5V Input Voltage

 1/2/3/4MHz Selectable Switching Frequency

 Switching Frequency Foldback Function

 Standby/Flash/Assist/Torch/Indicator/5V DC

Mode

FLASH MODE:

 Up to 2A Programmable Current with

+/-7% Accuracy

ASSIST/TORCH MODE:

 Up to 508mA Programmable Current with

+/-7% Accuracy

INDICATOR MODE:

 Works in 31.5kHz PWM Dimming Mode with

2/16, 3/16, 4/16, 5/16 Duty Cycle

5V DC MODE:

 Fixed 5V Output Voltage

 External Torch/Strobe Pin

 Low-Battery Voltage Protection

 Pre-Flash for Auto Detect Load Condition

 LED Short/Open Protection

 VOUT-GND Short Protection

 Over-Voltage Protection

 Over-Temperature Protection

 Input Under-Voltage Lockout Protection

 Thermal Protection

 Input to Output Disconnection Function

 Available in a WLCSP9-1.7mm x 1.7mm

Package

APPLICATIONS



Camera Phone LED Flash



Tablets



Digital Still Camera

All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.

For MPS green status, please visit the MPS website under Quality Assurance.

“MPS” and “The Future of Analog IC Technology” are registered Ttademarks of

Monolithic Power Systems, Inc.