ISL8502IRZ

Voltage Regulators - DC DC Switching Regulators Overview

The ISL8502IRZ is a synchronous buck regulator manufactured by Renesas Electronics Corporation, featuring integrated high-side and low-side N-channel MOSFETs within a compact 4mm x 4mm 24-lead QFN package. It supports a continuous output current of 2A with an input voltage range of 5.5V to 14V. The device offers an adjustable output voltage from 0.6V to 14V and operates at a switching frequency between 500kHz and 1.2MHz. It utilizes voltage-mode PWM control for fast transient response and includes comprehensive protection features such as overcurrent, thermal shutdown, and undervoltage detection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification with internal MOSFETs minimizes external component count and reduces overall solution footprint compared to linear regulators.
• Adjustable switching frequency allows optimization for efficiency or size requirements across a wide range.
• Input voltage feed-forward mechanism ensures constant modulator gain and stable performance despite input line variations.
• Built-in protections include lossless rDS(ON) high-side and low-side overcurrent protection, thermal shutdown, and power-good indication.

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring efficient power conversion
• Communication gateways and connected vehicle platforms
• Industrial control systems needing compact DC-DC solutions
• Multi-output power supplies using master-slave synchronization

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., IRZ vs AIRZ) against your bill of materials, as temperature grades may differ. Confirm end-of-life status with the manufacturer or authorized distributors before finalizing design-in decisions. Ensure compatibility with your PCB layout guidelines for the 24-QFN package to maintain thermal performance and signal integrity during implementation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a small form factor and high efficiency are critical for 2A load applications. The wide input voltage range suits systems powered by 12V nominal rails. Consider the master-slave capability if multiple outputs derived from the same rail require synchronized operation to minimize EMI. Verify that the required output voltage falls within the 0.6V to 14V adjustable range.

Voltage Regulators - DC DC Switching Regulators Part Context

The ISL8502 belongs to Renesas' portfolio of synchronous buck regulators designed for space-constrained applications. It integrates the controller and power switches into a single IC, simplifying design and improving reliability. This family targets automotive and industrial markets where robust performance and compact packaging are essential for modern electronic control units.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-to-pin replacements within the ISL8502 series, such as the ISL8502AIRZ for extended temperature ranges. Evaluate newer generations of synchronous buck converters from Renesas or other vendors if long-term supply assurance is required. Ensure any substitute matches the 2A current rating, input voltage range, and package dimensions.