ISL85003AFRZ-TK

Voltage Regulators - DC DC Switching Regulators Overview

The ISL85003AFRZ-TK is a synchronous buck regulator from the Renesas ISL85003A series, designed for high-efficiency DC-DC conversion. It operates with an input voltage range of 4.5 V to 18 V and delivers up to 3 A of output current. The device features an adjustable output voltage starting from 0.8 V and supports a fixed switching frequency of 500 kHz, which can be synchronized externally up to 2 MHz. Packaged in a compact 12-pin DFN-EP-12 (4x3 mm) surface-mount format, it includes integrated protection mechanisms such as overcurrent, overvoltage, and thermal shutdown.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture for enhanced power efficiency
• Integrated soft-start and comprehensive fault protection circuits
• External synchronization capability for flexible clock alignment

Voltage Regulators - DC DC Switching Regulators Applications

• Embedded computing systems
• Standard 12V power distribution networks
• Industrial process control equipment
• Network and communication infrastructure

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TK' against the manufacturer's official documentation to confirm reel packaging specifications and quantity per unit. Ensure compatibility with RoHS directives and moisture sensitivity levels prior to integration into the assembly line. Cross-reference the exact part number with the latest datasheet revision to validate pinout and electrical characteristics.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for converting higher bus voltages down to lower logic or peripheral rails. The 3 A current rating suits moderate load applications where space constraints limit larger packages. Consider the external compensation options if loop stability requires customization beyond internal defaults.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL85003A family of high-efficiency synchronous buck regulators originally developed by Intersil and now managed by Renesas Electronics. The series is characterized by its small footprint and robust performance in point-of-load applications. The FRZ suffix indicates the tape-and-reel packaging variant, while TK specifies the specific reel configuration.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

ISL85003FRZ: Identical functional equivalent without the specific TK reel designation.