RT8458D Datasheet Constant Current PWM Buck Controller

Manufacturer: Richtek

Datasheet Details

Part number	RT8458D
Manufacturer	Richtek
File Size	203.50 KB
Description	Constant Current PWM Buck Controller
Datasheet	RT8458D Datasheet

The RT8458D is a PWM controller with an internal high side gate driver.

Because of the Buck topology, the input voltage for the Buck system is only limited by the voltage rating of the external MOSFET.

It is used for step down converters by well controlling the external MOSFET and regulating a constant output current.

® RT8458D High Voltage, High Efficiency, Constant Current PWM Buck Controller for LED Lighting.

a 160kHz 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 RT8458D also has multiple features to protect the controller from fault conditions, including Under Voltage Lockout (UVLO), Over Current Protection (OCP) and Over Voltage Protection (OVP). Additionally, to ensure the.

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