2.7V-5.5V Input , 38V OVP,
Dual-Channel White LED Driver
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.
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
Feature Phone and Smart Phones
<10 inch LCD video displays with one-cell Li-
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MP3312 Rev. 1.1
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