ISL85403FRZ-TK

Voltage Regulators - DC DC Switching Regulators Overview

The ISL85403FRZ-TK is a synchronous buck or boost switching regulator IC manufactured by Renesas Electronics Corporation. It integrates high-side MOSFETs and supports adjustable output voltages ranging from 0.5 V to 36 V with a maximum output current of 2.5 A. The device operates from an input voltage range of 3 V to 40 V and features an adjustable switching frequency between 200 kHz and 2.2 MHz. It includes shutdown functionality, operates within a temperature range of -40°C to +105°C, and utilizes a 20-lead QFN package with an exposed pad.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-side MOSFETs for synchronous buck or boost converter topologies
• Supports adjustable switching frequencies up to 2.2 MHz
• Includes shutdown control for power management

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial equipment power systems
• Automotive electronics applications
• Portable battery-powered devices

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix TK indicates tape and reel packaging when ordering. Confirm RoHS compliance status through official datasheets. Ensure compatibility with required operating temperatures and electrical parameters before integration into final designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring integrated high-side MOSFETs in buck or boost configurations. Consider the 2.5 A output capability and wide input voltage range suitable for various industrial and automotive environments. Evaluate thermal performance requirements given the QFN-EP-20 package constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL85403 series of switching regulators from Renesas. It is designed as a compact solution for DC-DC conversion needs. The FRZ designation typically refers to the lead-free tray version, while TK denotes the tape and reel variant for automated assembly processes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-compatible alternatives within the Renesas portfolio. Verify that substitute components match the 2.5 A current rating and 40 V input limit. Ensure equivalent switching frequency ranges and thermal characteristics are maintained.