RT8453
RT8453 is High Voltage Buck LED Driver manufactured by Richtek.
Conceptual
High Voltage BUCK LED Driver
General Description
The RT8453 is a Buck current mode PWM regulator for LED driving applications. It has a 1.5A switch on board and can be operated with wide input range from 4.5V to 40V. With a 800kHz operating frequency, the external PWMinductor and input/output capacitors can all be small. High efficiency is achieved with a 190mV current sensing. Dimming can be either analog or PWM digital signal driven. The RT8453 is available in SOP8 (Exposed pad) package.
Features z High Voltage : VIN up to 40V z 1.5A Switch Current z Current Mode PWM with 800kHz Switching z Frequency z Easy Dimming : Analog or Digital method z Programmable Soft...
