RT8511BGQW

Overview

The RT8511BGQW is a single-output asynchronous boost LED driver IC manufactured by Richtek. It operates with an input voltage range of 2.7 V to 24 V and supports a maximum output voltage of 43 V. The device delivers up to 2.2 A of output current at a fixed switching frequency of 500 kHz. It is housed in an 8-lead WDFN package and functions within a temperature range of -40 °C to +85 °C.

Feature Summary

• Integrates PWM dimming capability for precise brightness control
• Includes overvoltage protection circuitry for system safety

Applications

• White LED (WLED) backlighting drivers
• General LED lighting applications

Procurement Notes

Verify the specific suffix 'BGQW' against the manufacturer's official datasheet to confirm pinout, thermal pad configuration, and material specifications. Ensure compatibility with PCB footprint designs and check for any recent product change notifications or lifecycle status updates from Richtek before finalizing procurement plans.

Selection Notes

Select this component when designing high-current single-channel boost converters requiring wide input voltage flexibility. The integrated switch and 500 kHz frequency offer a balance between efficiency and external component size. Verify that the required LED string voltage does not exceed the 43 V limit and that the peak current demand remains within the 2.2 A rating.

Part Context

This part belongs to the Richtek RT8511 series of LED lighting driver ICs. It is designed specifically for driving white LEDs in portable and general illumination devices. The device integrates a power switch to minimize external component count compared to discrete solutions.

Replacement Considerations

Consult the official Richtek cross-reference documentation for verified substitutes. Do not assume functional equivalence with other models based on similar naming conventions without verifying electrical parameters and pinouts.