RT4528 Datasheet (High Voltage Buck LED Driver)

Part: RT4528
Manufacturer: Richtek (official site)
Size: 186.09 KB

RT4528 Key Features

High Voltage : VIN Up to 50V, VOUT Up to 50V
Built-In 3A Power Switch
Current-Mode PWM Control
500kHz Fixed Switching Frequency
Analog or PWM Control Signal for LED Dimming
Internal Soft-Start to Avoid Inrush Current
Under-Voltage Lockout
Thermal Shutdown
RoHS pliant and Halogen Free

Related Richtek Datasheets

Part Number	Description
RT4501	High Efficiency Backlight LED Driver
RT4501A	High Efficiency Backlight LED Driver
RT4503	Asynchronous Boost Converter
RT4503A	Asynchronous Boost Converter
RT4532	High Efficiency Backlight LED Driver

RT4528 Description

The RT4528 is a current-mode LED driver supporting wide input voltage range from 4.5V to 50V and output voltage up to 50V. With internal 500kHz operating frequency, the size of the external PWM inductor and input/output capacitors can be minimized. High efficiency is achieved by a 100mV current sensing control.