Download the RT8541A datasheet PDF.
This datasheet also covers the RT8541 variant, as both devices belong to the same boost dc/dc converter family and are provided as variant models within a single manufacturer datasheet.
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.
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.
Full PDF Text Transcription for RT8541A (Reference)
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
RT8541A. For precise diagrams, and layout, please refer to the original PDF.
® 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 t...
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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 the CTRL pin.
RT8541A Datasheet
