ISL78100ARZ-T

Overview

The ISL78100ARZ-T is a high-power LED driver IC from the Renesas ISL78100 series, designed for automotive-grade applications. It integrates a buck-boost topology to regulate current through high-power LEDs with an input voltage range of 2.7 V to 16 V and a maximum output current of 1 A. Operating at a switching frequency of 1 MHz, the device supports PWM dimming and includes short circuit and thermal protection features. It is housed in a 20-lead QFN package and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates buck-boost topology for flexible high-power LED regulation
• Supports PWM dimming for precise brightness control
• Includes built-in short circuit and thermal protection mechanisms

Applications

• Automotive exterior lighting systems
• High-power LED illumination modules
• LED display drivers requiring robust regulation

Procurement Notes

Verify the specific suffix designation (e.g., T, TK, T7A) against official Renesas documentation, as these indicate distinct packaging formats such as tape-and-reel or tube. Confirm that the component meets the required automotive grade specifications and RoHS compliance standards for your target application environment before finalizing procurement.

Selection Notes

Select this component when a single-channel driver capable of handling wide input voltage variations is required for high-power LEDs. The integrated buck-boost converter simplifies design by accommodating both boost and buck operating modes. Ensure the thermal management solution aligns with the QFN-20 package's heat dissipation capabilities under maximum load conditions.

Part Context

This part belongs to the ISL78100 family of LED lighting drivers manufactured by Renesas Electronics (formerly Intersil). The family focuses on providing efficient, compact solutions for automotive and industrial LED applications. Variants within the series share core electrical characteristics but differ primarily in packaging and shipping configurations to suit different manufacturing assembly lines.

Replacement Considerations

Check for direct substitutes like ISL78100ARZ-TK or ISL78100ARZ-T7A which share identical electrical specifications but differ in reel or tube packaging. Verify pinout compatibility and thermal performance equivalence if considering alternative manufacturers.