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MPQ3364 - Maximum 150mA/Ch Boost WLED Driver

Datasheet Summary

Description

The MPQ3364 is a step-up converter with 4 channel current sources.

The device is designed to drive white LED arrays as backlighting for small- or medium-sized LCD panels.

The device uses peak current mode as its PWM control architecture to regulate the boost converter.

Features

  • 3.5V to 36V Input Voltage Range.
  • 4 Channels with Maximum 150mA per Channel.
  • Internal 100mΩ, 50V MOSFET.
  • Configurable fSW Up to 2.2MHz.
  • External Sync SW Function.
  • Multi-Dimming Operation through PWM Input, Including: o Direct PWM Dimming o Analog Dimming o Mix Dimming with 25% or 12.5% Transfer Point.
  • 15000:1 Dimming Ratio in PWM Dimming when fPWM ≤ 200Hz.
  • 200:1 Dimming Ratio during Analog Dimming through PWM Dimming Signal Input.
  • Excellent EMI Perfor.

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Datasheet preview – MPQ3364

Datasheet Details

Part number MPQ3364
Manufacturer MPS
File Size 1.15 MB
Description Maximum 150mA/Ch Boost WLED Driver
Datasheet download datasheet MPQ3364 Datasheet
Additional preview pages of the MPQ3364 datasheet.

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Full PDF Text Transcription

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DESCRIPTION The MPQ3364 is a step-up converter with 4 channel current sources. The device is designed to drive white LED arrays as backlighting for small- or medium-sized LCD panels. The device uses peak current mode as its PWM control architecture to regulate the boost converter. Four channel current sources are applied to the LED cathode to adjust LED brightness. The MPQ3364 regulates the current in each LED string to the value set by an external current-setting resistor, with 2.5% current regulation accuracy between strings. A low on resistance MOSFET and headroom voltage are provided to improve efficiency. The MPQ3364 has a standard I2C digital interface for easy use. The switching frequency can be configured via a resistor, I2C interface, or external clock.
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