ISL85003AFRZ-T7A

Voltage Regulators - DC DC Switching Regulators Overview

The ISL85003AFRZ-T7A is a synchronous buck regulator from the Renesas ISL85003A series, featuring integrated high-side and low-side FETs. It operates with an input voltage range of 4.5 V to 18 V and provides an adjustable output voltage starting from 0.8 V. The device delivers a maximum output current of 3 A at a fixed switching frequency of 500 kHz. It supports shutdown functionality and functions within a junction temperature range of -40°C to +125°C. The component is housed in a 12-VFDFN package with an exposed pad for surface mount installation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification with internal high-side and low-side power FETs
• Adjustable output voltage capability with a minimum reference of 0.8 V
• Fixed 500 kHz switching frequency for optimized passive component size
• Shutdown pin support for enhanced power management control

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Power supply stages for industrial equipment
• Input voltage step-down for communication infrastructure

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'T7A' indicates tape and reel packaging distinct from the tube-packaged ISL85003AFRZ. Confirm RoHS compliance status through official Renesas documentation. Ensure the 12-VFDFN footprint matches the target PCB layout. Validate that the 3 A continuous current rating aligns with thermal design requirements for the intended application environment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for stepping down voltages between 4.5 V and 18 V to lower logic levels. The integrated FETs simplify design by eliminating external gate drivers. The fixed 500 kHz frequency reduces inductor size compared to lower-frequency alternatives. Consider the 12-pin DFN package constraints for thermal dissipation and board space limitations during the selection process.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL85003A family of synchronous buck regulators manufactured by Renesas Electronics Corporation. It succeeds earlier Intersil designs under the Renesas portfolio. The device is categorized as a DC-DC switching voltage regulator within the PMIC segment. It shares core topology with the ISL85003 but may differ in packaging or specific electrical tolerances as defined by the manufacturer's datasheet.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The ISL85003FRZ serves as a tube-packaged alternative within the same functional family. Verify pin compatibility and electrical specifications before substitution. Cross-reference the exact output current and voltage ranges to ensure performance parity. Consult official Renesas documentation for confirmed substitute part numbers.