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RT8301

Richtek
Part Number RT8301
Manufacturer Richtek
Description 8-CH Constant Current LED Driver
Published May 27, 2016
Detailed Description ® RT8301 8-CH Constant Current LED Driver for Display Backlight General Description The RT8301 is a 8-CH constant curr...
Datasheet PDF File RT8301 PDF File

RT8301
RT8301

Overview
® RT8301 8-CH Constant Current LED Driver for Display Backlight General Description The RT8301 is a 8-CH constant current sink LED drivers with Dynamic Headroom Control (DHC) function.
RT8301 can provide well current matching ability, adjustable VSET to choose the suitable dropout voltage across the MOS / BTJ.
Beside that, DHC will provide the stable VFB dimming, thus voltage ripple is kept as small even during the dimming.
The RT8301 provides four channel constant currents with less than 3% differences in output current value among the 8-CH and ICs respectively.
The constant current is adjustable by each channel external resistor (RISET).
The LED brightness can also be adjusted via the EN/PWM pin with PWM dimming duty from 1% to 100%.
The RT8301 can operate with external components for high current applications.
The DHC function generates feedback signal to DC/DC control loop and regulate the output voltage.
When RT8301 selects the LED string with the highest forward voltage, and t...


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