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RT8541A Datasheet Boost DC/dc Converter

Manufacturer: Richtek

Overview: ® RT8541/A 90V Boost DC/DC Converter with APD Current Monitor.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The RT8541/A is a constant frequency current mode PWM step-up DC/DC converter designed to bias avalanche photodiodes (APD) at high voltage in optical receivers.

It includes a voltage doubler charge pump to significantly reduce the noise level at output up to 90V.

The RT8541A switching frequency can be adjusted by a resistor while RT8541 is internally set at 650kHz.

Key Features

  • a built-in 9ms soft-start function to eliminate the inrush current during start-up interval. The RT8541/A provides a low cost optical receiver solution and can fit in very small PCB area. The RT8541/A is available in the WQFN-16L 3x3 package. Features.
  • Integrated Schottky Diodes for Charge Pump Voltage Doubler.
  • 50V, 400mA Internal Switch.
  • High Side Low Noise and Accurate APD Current Monitor.
  • 650kHz Fixed Switching Frequency for RT8541 and Adjustable Switching Frequency for R.

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RT8541A Distributor