RT8458 - High Efficiency PWM Buck LED Driver Controller

Product Overview

Richtek

Part number	RT8458
Manufacturer	Richtek
File Size	264.51 KB
Description	High Efficiency PWM Buck LED Driver Controller
Datasheet	RT8458 Datasheet
Additional preview pages of the RT8458 datasheet.

The RT8458 is a PWM controller with an integrated high side floating gate driver.

a 48kHz fixed frequency oscillator, an internal 178mV 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 RT8458 also has multiple features to protect the controller from fault conditions, including Under Voltage Lockout (UVLO), Over Current Protection circuit (OCP) and Over Voltage Protection (OVP). Additionally, to ensure the sy.

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Published: Sep 24, 2014 |