RT8471ZSP

Overview

The RT8471ZSP is a hysteretic, high-brightness LED driver IC manufactured by Richtek USA Inc. It functions as a DC-DC step-down (buck) regulator with an integrated switch, delivering a constant current of 1.2A to drive high-brightness LEDs. The device supports both analog and PWM dimming methods for brightness control. It operates within a supply voltage range of 7V to 36V and features an operating junction temperature range of -40°C to 125°C. The component is housed in an 8-SOP-EP package.

Feature Summary

• Integrates a power switch for compact design
• Supports analog and PWM dimming modes
• Provides constant current regulation for LEDs

Applications

• General lighting systems
• Signage applications

Procurement Notes

Verify the exact suffix ZSP against the manufacturer's official datasheet to confirm pinout and thermal pad specifications. Confirm RoHS compliance status and check for End-of-Life notices or alternative part recommendations from Richtek before finalizing procurement plans.

Selection Notes

Select this component for designs requiring a buck topology LED driver with integrated switching capability. Ensure the input voltage stays within the 7V to 36V range and that the load current requirements do not exceed the 1.2A limit. Verify compatibility with the chosen dimming interface.

Part Context

This part belongs to the RT8471 family of LED drivers from Richtek. It is designed for high-efficiency illumination tasks where space constraints favor an integrated solution over discrete components. The SOP-EP package aids in thermal dissipation for sustained operation.

Replacement Considerations

Check for updated revisions of the RT8471 series. Consult Richtek documentation for any officially designated pin-to-pin replacements if this specific suffix is discontinued.