Design contains obsolete parts

EVB_RT4533AGJ6: 20mA @ 36.5V Max, 2.5 ~ 5.5V in

Summary

The EVB_RT4533AGJ6 is a highly integrated LED driver IC capable of driving 10 WLEDs in series. It is composed of a current mode Boost converter integrated with a 36.5V/1.2A power switch. The RT4533A supports a wide input voltage range from 2.5V to 5.5V and runs at a fixed frequency of 1.1MHz. The LED current is set via an external resistor and the feedback voltage is regulated to 300mV. For brightness dimming, the RT4533A supports PWM dimming which determines the feedback reference voltage.

Product Features

PWM Dimming Brightness Control
300mV Reference Voltage with ±2% Accuracy
1.1MHz Switching Frequency
Built-In Soft-Start
Over-Temperature Protection
Internal Compensation
Current Limit

Specifications

Manufacturer	Richtek USA Inc.
Category	Lighting
Sub-Category	LED Drivers - DC In
Eval Board Part Number	EVB_RT4533AGJ6-ND
Eval Board Supplier	Richtek USA Inc.
Eval Board	Normally In Stock
Voltage In	2.5 ~ 5.5 V
Topology	Step Up
Current Out	20 mA
Voltage Out (Max)	36.5 V
Outputs and Type	1 Non-Isolated
Efficiency @ Conditions	>80%, 3.5 ~ 5.5V in, 30V @ 20 mA
Features	Current Limit (Adj. or Fixed) Dimming Control Over Current Protection Over Voltage Protection PWM Interface Soft Start Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	1.1 MHz
Component Count + Extras	19 + 8
Design Author	Richtek USA Inc.
Application / Target Market	Cell Phones Digital Cameras Portable Devices
Main I.C. Base Part	RT4533A
Date Created By Author	2016-07
Date Added To Library	2018-06