2.7-5.5Vin, 38Vout, 600KHz, Dual Channel Boost WLED Driver

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Product Description

The MP3312L is a dual-channel, step-up WLED driver with an integrated 40V MOSFET. It supports a 2.7V to 5.5V power supply input and uses peak current mode to regulate the LED current, which is set by an external resistor. The MP3312L employs a 600kHz fixed switching frequency. It supports both PWM input analog dimming and digital analog dimming to regulate the dimming current accurately. The MP3312L integrates a current source to balance the LED current, which leads to good ILED matching and accuracy performance. In addition, the MP3312L has both LED open and short protection, cycle-by-cycle current limit protection, and thermal shutdown protection. It is available in a tiny WLCSP1.35x1.35-9mm package.

Product Features

  • 2.7V~5.5V Input Voltage
  • 600kHz Switching Frequency
  • Dual Channels Support up to 30mA/String
  • 1% Current Matching between LED Channels
  • +/-2% Current Accuracy
  • 38V OVP
  • 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 WLCSP1.35x1.35-9mm Package


  • Isw Limit (A)1.8
  • Ishutdown (µA)1
  • Vin (min) (V)2.5
  • Vin (max) (V)5.5
  • Channels2
  • fsw (min) (kHz)600
  • Ichannel (max) (A)0.03
  • LEDx ABS Voltage (V)40
  • fsw (max) (kHz)600
  • Vout (max) (V)38
  • Vfb (V)0.24
  • GradeCatalog
  • Rds(on) (mΩ)200
  • PackageWLCSP-9 (1.35x1.35)
  • Power MOSFETIntegrated
  • TopologyBoost
  • Dimming (Output)A-Dim
  • Iq (mA)1
  • Typical LCD Screen SizesSmall (<10")
  • Other Features1-Wire