RT6033A PDF – 4-Ch, Constant Current LED Driver – Richtek

Part Number: RT6033A

Function: 4-Channel, Constant Current LED Driver

Package: SOP 16 Pin Type

Manufacturer: Richtek

Images:RT6033A pdf datasheet


The RT6033A is a 4-CH constant current sink LED drivers with Dynamic Headroom Control (DHC) function. RT6033A can provide well current matching ability, adjustable VSET to choose the suitable dropout voltage across the MOS / BTJ. Beside that, DHC will provide the stable VFB dimming, thus voltage ripple is kept as small even during the dimming.

The RT6033A provides four channel constant currents with less than 3% differences in output current value among the 4-CH and ICs respectively. The constant current is adjustable by each channel external resistor (RISET). The LED brightness can also be adjusted via the EN/PWM pin with PWM dimming duty from 1% to 100%. The RT6033A can operate with external components for high current application The DHC function generates feedback signal to DC/DC control loop and regulate the output voltage.


1. Wide Input Supply Voltage Range : 5V to 24V

2. Adjustable Channel Current

3. 3% Current Sense Amplifier Input Offset

4. VCC Under Voltage Lockout

5. Thermal Shutdown

6. Adjustable Dynamic Headroom Control (DHC) Function

7. LED Open/Short Protection

8. RoHS Compliant and Halogen Free

RT6033A pinout led driver



1. LCD TV, MNT Display Backlight

2. DC/DC or AC/DC LED Driver Application

3. General Purpose Constant Current Source

4. Architectural and Decorative LED Lighting

5. LED Street Lighting

RT6033A PDF Datasheet