MP3312

2.7V-5.5V Input , 38V OVP,

Dual-Channel White LED Driver

MP3312 Rev. 1.02

www.MonolithicPower.com

1

1/13/2015

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© 2015 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP3312 is a dual-channel step-up WLED

driver with integrated 40V MOSFET, and

supports 2.7V to 5.5V power supply input. It uses

peak current mode to regulate the LED current

which is set by external resistor.

The MP3312 employs 1.2MHz fixed switching

frequency. It features supporting both PWM input

analog dimming and digital analog dimming to

accurately regulate the dimming current.

The MP3312 integrates current source to

balance LED current, which leads good ILED

matching and accuracy performance.

In addition, the MP3312 has LED open and short

protection, cycle by cycle current limit protection,

and thermal shutdown protection. It is available in

tiny WLCSP1.35x1.35-9 package.

FEATURES

• 2.7V~5.5V Input Voltage

• 1.2MHz Switching Frequency

• Dual Channels Support up to 30mA/String

• 1% Current Matching Between LED Channels

• +/-2% Current Accuracy

• 38V OVP Protection

• PWM Input Analog Dimming Mode

• 5kHz to100kHz PWM Input Analog Dimming

• 1-Wire Interface for Digital Dimming

• 9-bit Dimming Resolution

• Internal Soft Start to Reduce Inrush Current

• Available in WLCSP1.35x1.35-9 Package

APPLICATIONS

• Feature Phone and Smart Phones

• Tablets

• GPS Receivers

• <10 inch LCD video displays with one-cell Li-

ion battery

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.

TYPICAL APPLICATION

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