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RT8541

Part Number	RT8541
Manufacturer	Richtek
Description	Boost DC/DC Converter
Published	May 26, 2016
Detailed Description	® RT8541/A 90V Boost DC/DC Converter with APD Current Monitor General Description The RT8541/A is a constant frequency...
Datasheet	RT8541 PDF File

Overview

® RT8541/A 90V Boost DC/DC Converter with APD Current Monitor 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.
The RT8541/A has a built-in APD current mirror that delivers 1/5 of the APD current with high accuracy for monitoring the APD current from 0.
25μA to 2.
5mA.
This current can be used as a reference to provide a digital programmed output voltage via t...

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