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MPQ3369-AEC1 - Boost WLED Driver

Description

The MPQ3369-AEC1 is a step-up converter with six channel current sources, designed to drive white LED arrays as backlighting in small-to-midsize LCD panels.

The MPQ3369-AEC1 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.
  • Programmable Up to 2.2MHz fSW.
  • External Sync SW Function.
  • Multi-Dimming Operation Mode through PWM Input, Including: o Direct PWM Dimming o Analog Dimming o Mix Dimming with 25%/12.5% Transfer Point.
  • 15000:1 Dim Ratio in PWM Dim at fPWM ≤ 200Hz.
  • 200:1 Dim Ratio at Analog Dim through PWM Dim Signal Input.
  • Excellent EMI Performance, Frequency Spread Spec.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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DESCRIPTION The MPQ3369-AEC1 is a step-up converter with six channel current sources, designed to drive white LED arrays as backlighting in small-to-midsize LCD panels. The MPQ3369-AEC1 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. It regulates the current in each LED string to the value set via an external currentsetting resistor, with 2.5% current regulation accuracy between strings. The MPQ3369-AEC1 employs a low on-resistor MOSFET and a low headroom voltage, designed for higher efficiency. It has a standard I2C digital interface for ease of use. The switching frequency can be programmed by a resistor, I2C interface, or external clock.
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