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RT4527A - 36V High Efficiency Boost Converter

Description

The RT4527A is a high efficiency driver for white LEDs.

It is suitable for single/two cell battery input to drive LED light bars which contains six strings in parallel and up to 10 WLEDs per string.

Features

  • Wide Operating Input Voltage : 2.7V to 24V.
  • High Output Voltage: Up to 36V.
  • Channel Current Programmable: 6mA to 25mA.
  • Channel Current Regulation with Accuracy ±3% and Matching ±2%.
  • Dimming Controls.
  • Direct PWM up to 25kHz with Minimum 1% Duty.
  • PWM to Analog up to 2kHz with 12-Bit Resolution, Up to 4kHz with 11-Bit Resolution, Up to 8kHz with 10-Bit Resolution.
  • PWM to Mixed Up to 2kHz with 12-Bit Resolution, Up to 4kHz with 11-Bit Resolution.
  • PWM to.

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Datasheet preview – RT4527A

Datasheet Details

Part number RT4527A
Manufacturer Richtek
File Size 622.50 KB
Description 36V High Efficiency Boost Converter
Datasheet download datasheet RT4527A Datasheet
Additional preview pages of the RT4527A datasheet.

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Full PDF Text Transcription

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RT4527A 36V High Efficiency Boost Converter with I2C Controlled 6-CH LED Driver General Description The RT4527A is a high efficiency driver for white LEDs. It is suitable for single/two cell battery input to drive LED light bars which contains six strings in parallel and up to 10 WLEDs per string. The internal current sinks support a maximum of ±2% current mismatching for excellent brightness uniformity in each string of LEDs. To provide enough headroom for current sink operation, the boost controller monitors the minimum voltage of the feedback pins and regulates an optimized output voltage for power efficiency. The RT4527A contains I2C interface for controlling the dimming mode, operating frequency and the LED current.
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