ISL85003AFRZ

Voltage Regulators - DC DC Switching Regulators Overview

The ISL85003AFRZ is a synchronous buck regulator from the ISL85003A series, manufactured by Renesas Electronics. It operates with an input voltage range of 4.5 V to 18 V and provides an adjustable output voltage from 0.8 V to 18 V. The device delivers a maximum output current of 3 A through a single channel. It features a fixed internal switching frequency of 500 kHz, which can be synchronized externally up to 2 MHz. The component is housed in a 12-lead DFN-EP package (4 mm x 3 mm) and supports operation within a temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture for high efficiency
• Current mode control with integrated soft-start
• External synchronization capability up to 2 MHz
• Comprehensive protection including overcurrent and thermal overload

Voltage Regulators - DC DC Switching Regulators Applications

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

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix FRZ indicates tube packaging and RoHS compliance. Confirm the 'A' variant designation matches specific revision requirements. Check datasheet for moisture sensitivity level handling instructions. Ensure the DFN-EP package footprint aligns with PCB design guidelines. Validate supplier documentation against Renesas official specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring a compact 3 A solution with wide input voltage flexibility. Consider external compensation options if loop stability varies across operating conditions. Evaluate thermal performance based on ambient temperature and copper area. Verify that the 500 kHz frequency meets EMI constraints or requires synchronization.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL85003A family of high-efficiency synchronous buck regulators. It succeeds earlier Intersil designs like the ISL8500, offering higher current capacity and improved integration. The device is part of Renesas's broader portfolio of power management ICs aimed at reducing solution size in point-of-load applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

ISL85003FRZ is the standard commercial grade equivalent within the same series.