EV3331-C-00A

2A Flash LED Driver With I

Evaluation Board

EV3331-C-00A Rev.1.0

www.MonolithicPower.com

1

5/19/2015

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© 2015 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP3331 is a single 2A 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 device

operates in 1/2/3/4MHz synchronous DCDC

boost converter to provide an optimized solution

for smaller PCB space and higher efficiency.

single LED channel, rich protection modes and

high power density and performances. It

supports flash/assist light/torch/indicator/5V DC

modes.

The cathode of the flash LED is referenced to

GND which is better for layout to improve thermal

performance. It is available in WLCSP9-

1.7X1.7mm package.

ELECTRICAL SPECIFICATIONS

Parameter

Symbol

Value

Units

Input Voltage

2.7-5.5

V

Output Voltage

Vout

<5.5

V

LEDs #

1

LED Current

Max.2

A

FEATURES

• 2.7V~5.5V input voltage

• 1/2/3/4MHz selectable switching frequency

• Switching frequency fold-back 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:

Work 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

• Input to output disconnection protection

• Over temperature protection

• Input under voltage lockout protection

• Thermal protection

• Available in WLCSP9-1.7X1.7mm

APPLICATIONS

•

Displays 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 MPS website under Quality Assurance. “MPS”

and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.