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RT8511B

Richtek
Part Number RT8511B
Manufacturer Richtek
Description 43V Asynchronous Boost WLED Driver
Published Mar 19, 2020
Detailed Description ® RT8511B 43V Asynchronous Boost WLED Driver General Description The RT8511B is an LED driver IC that can support up t...
Datasheet PDF File RT8511B PDF File

RT8511B
RT8511B

Overview
® RT8511B 43V Asynchronous Boost WLED Driver General Description The RT8511B is an LED driver IC that can support up to 10 WLED in series.
It is composed of a current mode boost converter integrated with a 43V/2.
2A power switch running at a fixed 500kHz frequency and covering a wide VIN range from 2.
7V to 24V.
The white LED current is set with an external resistor, and the feedback voltage is regulated to 200mV (typ.
).
During operation, the LED current can be controlled by the PWM input signal in which the duty cycle determines the feedback reference voltage.
For brightness dimming, the RT8511B is able to maintain steady control of the LED current.
Therefore, no audible noises are generate...


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