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MPQ3369 - Maximum 100mA/Ch Boost WLED Driver

Datasheet Summary

Description

The MPQ3369 is a step-up converter with six channel current sources.

It 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.
  • 6 Channels with Max 100mA per Channel.
  • Internal 100mΩ, 50V MOSFET.
  • Configurable Switching Frequency Up to 2.2MHz.
  • External Sync SW Function.
  • Multi-Dimming Operation Mode 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 at fPWM ≤ 200Hz.
  • 200:1 Dimming Ratio at Analog Dimming through PWM Dimming Signal Input.
  • Excellent.

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Datasheet preview – MPQ3369

Datasheet Details

Part number MPQ3369
Manufacturer MPS
File Size 1.46 MB
Description Maximum 100mA/Ch Boost WLED Driver
Datasheet download datasheet MPQ3369 Datasheet
Additional preview pages of the MPQ3369 datasheet.

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Full PDF Text Transcription

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DESCRIPTION The MPQ3369 is a step-up converter with six channel current sources. It 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. Six channel current sources are applied into the LED cathode to adjust the LED brightness. The MPQ3369 regulates the current in each LED string to the value set via an external current-setting resistor, with 2.5% current regulation accuracy between strings. A low on resistor MOSFET and a low headroom voltage are provided to improve efficiency. The MPQ3669 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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