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 .
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 RT8541A
Wide VIN Range : 2.7V to 16V
Adjustable APD Current Limit with External Resistor
Low Shutdown Current <.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | RT8540A |
Richtek |
High Power Synchronous Boost Converter | |
2 | RT8541A |
Richtek |
Boost DC/DC Converter | |
3 | RT8543 |
Richtek |
6-String 43V White LED Driver | |
4 | RT8549L |
Richtek |
24V/60V Boost Converter | |
5 | RT8509 |
Richtek |
Step-Up DC/DC Converter | |
6 | RT8509A |
Richtek |
Step-Up DC/DC Converter | |
7 | RT8510 |
Richtek |
43V 4-CH LED Driver | |
8 | RT8510 |
Latin Tech |
Rotational Position Transducer | |
9 | RT8510 |
Celesco |
Rotational Position Transducer | |
10 | RT8511A |
Richtek |
43V Asynchronous Boost WLED Driver | |
11 | RT8511B |
Richtek |
43V Asynchronous Boost WLED Driver | |
12 | RT8525 |
Richtek |
Boost Controller |