RT8470GSP

Overview

The RT8470GSP is a hysteretic high brightness LED driver from Richtek USA Inc., featuring an internal switch and operating within a 7V to 30V input voltage range. It delivers a regulated output current of 1.2A per channel, utilizing high-side current sensing for precise control. The device supports both analog and PWM dimming methods, enabling flexible brightness adjustment for various lighting applications.

Feature Summary

• Integrates a hysteretic control architecture with high-side current sensing for stable regulation
• Includes an internal power switch to minimize external component count
• Supports dual dimming modes including analog and pulse-width modulation (PWM)

Applications

• General lighting systems
• Portable electronic devices

Procurement Notes

Verify the specific suffix 'GSP' against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure compatibility with required thermal management solutions for the 8-SOP-EP package. Confirm RoHS compliance status through the latest environmental declaration documents provided by Richtek USA Inc. before finalizing procurement orders.

Selection Notes

Select this component when a compact solution with integrated switching capability is required for high-brightness LED strings. The hysteretic control method offers fast transient response without requiring external compensation networks. Consider the 1.2A output limit and 30V maximum input voltage when designing the LED string configuration.

Part Context

This part belongs to the RT8470 series of LED drivers designed for portable and general lighting applications. It serves as a step-down (buck) DC-DC regulator optimized for driving high-power LEDs efficiently. The series focuses on reducing board space through internal integration while maintaining high efficiency and reliability standards.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify if other variants within the RT847x family meet the specific electrical requirements before considering alternatives.