RT8458A Datasheet - Richtek

RT8458A, High Efficiency PWM Buck LED Driver Controller

® RT8458A High Efficiency PWM Buck LED Driver Controller General .
The RT8458A is a PWM controller with an integrated high side gate driver.

Features

* a 47kHz fixed frequency oscillator, an internal
* 220mV precision reference, and a PWM comparator with latching logic. The accurate output LED current is achieved by an averaging current feedback loop and the LED current dimming can be easily controlled via the ACTL pin. The RT8458A also has

Applications

* E27, PAR30, Offline LED Lights Marking Information 07=DNN 07= : Product Code DNN : Date Code Simplified Application Circuit VIN CIN RVCC1 RVCC2 CVCC CVC2 RVC CVC1 RT8458A VCC ACTL VC GATE GND SENSE Analog Dimming Q1 D2 RS L1 D1 COUT LED+ LED- Copyright ©2014 Richtek Technology Corp

RT8458A-Richtek.pdf