ISL85412FRTZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL85412FRTZ-T is a synchronous buck regulator from the Renesas ISL8541x family, designed for high-efficiency power conversion in compact spaces. It operates with an input voltage range of 3V to 40V and delivers a maximum output current of 150mA. The device features a fixed switching frequency of 700kHz, allowing for the use of small external components. It supports an adjustable output voltage range from 600mV to 34V. The IC includes integrated soft-start functionality and thermal shutdown protection. It is housed in an 8-lead TDFN package with an exposed pad for improved thermal performance.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture ensures high efficiency across load ranges
• Wide input voltage capability accommodates various bus voltage levels
• Integrated thermal shutdown protects against overheating conditions
• Compact footprint enables space-constrained board designs

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial equipment
• Power supply stages for embedded computing systems
• Battery-powered portable devices requiring efficient step-down conversion
• Communication infrastructure power distribution networks

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix FRTZ-T corresponds to the tape-and-reel packaging configuration required for your assembly line. Confirm that the 8-lead TDFN package dimensions align with your PCB land pattern design. Ensure compatibility with the 700kHz switching frequency regarding electromagnetic interference filtering requirements. Check for RoHS compliance documentation if operating in regulated markets. Validate that the 150mA output current meets the peak load demands of the target application circuit.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a moderate current capacity of 150mA is sufficient for the load. The 700kHz frequency offers a balance between component size and switching losses. Consider the 3V to 40V input range suitability for the available power source. Evaluate the need for synchronous operation versus non-synchronous alternatives based on efficiency targets. Assess the thermal performance requirements given the small package size and expected ambient temperatures.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL8541x series of synchronous buck regulators, which also includes variants like the ISL85413 (300mA) and ISL85415 (500mA). These devices share similar control architectures but differ in current handling capabilities and package options. The series is designed for applications requiring reliable, efficient DC-DC conversion in automotive, industrial, and consumer electronics sectors.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes within the same family include the ISL85413FRTZ-T for higher current needs or ISL85415FRZ for different packaging. Cross-family replacements may require redesigning the feedback network and inductor selection due to varying switching frequencies and pinouts.