ISL6146DFUZ

Overview

The ISL6146DFUZ is a low voltage OR-ing FET controller manufactured by Renesas Electronics Corporation. It operates within a power supply voltage range of 3V to 20V and supports N-channel MOSFETs for efficient power distribution. The device features a single channel configuration housed in an 8-MSOP surface-mount package. It includes programmable current limiting, power failure detection, and an internal charge pump. The operational temperature range spans from -40°C to +125°C, with a typical shutdown delay time of 65 ns.

Feature Summary

• Integrates an internal charge pump to drive N-channel MOSFETs without external components
• Provides programmable current limiting and user-adjustable OUT-V trip points
• Features fast reverse current fault isolation with high-speed comparator response
• Includes open-drain FAULT pin output for conditional or FET fault indication

Applications

• N+1 redundant power systems
• Telecommunications and data communication infrastructure
• Industrial and telecom power distribution networks

Procurement Notes

This component has reached End-of-Life status as confirmed by manufacturer discontinuance notifications. Procurement requires verification of remaining stock availability through authorized distributors. Designers must assess the impact of obsolescence on long-term production plans and identify suitable replacement alternatives immediately.

Selection Notes

Select this controller for applications requiring low-voltage OR-ing efficiency using N-channel MOSFETs. Ensure the system voltage falls within the 3V to 20V operating range. Verify compatibility with the 8-MSOP package constraints and thermal requirements for the specified industrial temperature range.

Part Context

The ISL6146 series represents a family of OR-ing MOSFET controllers designed to replace traditional diode-based OR-ing solutions. This specific variant utilizes the MSOP-8 package, distinguishing it from DFN variants like the ISL6146EFRZ. It belongs to the broader PMIC category focused on power management and distribution efficiency.

Replacement Considerations

Direct substitutes include ISL6146AFUZ and ISL6146BFRZ-TK, which share similar functional characteristics within the same product family.