ISL78171ARZ-T7A

Overview

The ISL78171ARZ-T7A is a six-channel LED driver IC manufactured by Renesas Electronics. It integrates a step-up (boost) DC-DC regulator to drive LEDs from a low input voltage. The device supports an output current of 50mA per channel and offers high dynamic range dimming capabilities. Control interfaces include analog, I2C, and PWM inputs for precise regulation. It is housed in a 20-QFN (3x4 mm) package.

Feature Summary

• Integrates a boost converter for efficient LED driving
• Supports multiple dimming control methods including analog, I2C, and PWM
• Provides six independent output channels with 50mA capability

Applications

• Automotive interior lighting systems
• Dashboard illumination control
• Ambient lighting applications requiring high dynamic range

Procurement Notes

Verify the specific suffix 'T7A' indicates tape and reel packaging when ordering. Confirm automotive grade qualification requirements against the official datasheet. Ensure compatibility with system voltage levels and communication protocols before procurement.

Selection Notes

Select this component for designs requiring integrated boost regulation and multi-channel LED control. Consider the 20-QFN package size for space-constrained layouts. Verify thermal performance requirements for the intended operating environment.

Part Context

This part belongs to the ISL78171 family of LED drivers. It is designed for applications needing precise current regulation and dimming flexibility. The integration of the boost converter simplifies the bill of materials compared to discrete solutions.

Replacement Considerations

Check for direct pin-to-pin replacements within the Renesas portfolio. Verify electrical parameters such as output current and switching frequency match the original design requirements.