ISL6146EFRZ

Overview

The ISL6146EFRZ is an N+1 ORing controller designed for high-efficiency power distribution. It operates with a supply voltage range of 3V to 20V and features a low quiescent current of 25 µA. The device utilizes an 8-DFN (3x3) package and supports surface mount installation. It provides a fast turn-off delay time of 65 ns, enabling rapid fault isolation. The component functions within a temperature range of -40°C to 125°C.

Feature Summary

• Integrates an internal charge pump to drive external N-channel MOSFETs
• Provides programmable undervoltage lockout and overvoltage protection thresholds
• Features an open-drain fault output pin for conditional or FET fault indication
• Allows user-adjustable VOUT-VIN trip points via external resistors

Applications

• N+1 redundant power systems
• Telecommunications and data communication infrastructure
• Uninterruptible power supplies (UPS)
• Low voltage processor and memory storage systems

Procurement Notes

Verify the specific suffix 'FRZ' against the requested 'EFRZ' designation, as datasheets primarily reference the ISL6146C variant in this package. Confirm the manufacturer is Renesas Electronics Corporation, formerly Intersil. Ensure the component meets RoHS compliance standards. Check for End-of-Life notifications or Product Change Notices affecting availability. Validate the 8-DFN package dimensions for PCB footprint compatibility.

Selection Notes

Select this controller when replacing power ORing diodes in high-current applications to improve efficiency. Choose the EFRZ variant if independent bias and VIN inputs are required alongside active high enable functionality. Consider the 65 ns turn-off speed for sensitive load protection. Ensure the system voltage remains within the 3V to 20V operating range. Verify thermal requirements fit the -40°C to 125°C ambient specification.

Part Context

The ISL6146 family consists of OR-ing MOSFET controllers that replace diodes to reduce conduction losses. Variants include A, B, C, D, and E, differing in voltage compliance and reporting features. The ISL6146E specifically offers separate BIAS and VIN inputs with active high enable. This family supports voltages from 1V to 18V, optimizing power distribution in dense electronic designs.

Replacement Considerations

Direct substitutes include other ISL6146 variants such as ISL6146CFRZ or ISL6146DFRZ, depending on required voltage compliance and feature sets. Cross-reference pinouts and electrical characteristics before substitution.