ISL8723IRZ-T

Power Supply Controllers, Monitors Overview

The ISL8723IRZ-T is a four-channel power sequencing controller designed to manage the turn-on and turn-off sequence of multiple voltage rails. It operates from a 2.5V to 5V supply and monitors voltages from 0.7V to 5V. The device features an integrated charge pump providing VDD +5.3V gate drive for external N-channel MOSFETs. It supports adjustable slew rates, undervoltage lockout per rail, and glitch immunity. Multiple units can be daisy-chained to sequence an infinite number of independent voltages.

Power Supply Controllers, Monitors Feature Summary

• Enables arbitrary turn-on and turn-off sequencing of up to four power supplies
• Integrated charge pump supplies VDD +5.3V gate drive for external switches
• Allows flexible programming of delay and timing via external capacitors
• Supports daisy-chaining multiple sequencers for extended voltage control

Power Supply Controllers, Monitors Applications

• Graphics cards
• FPGA/ASIC/microprocessor/PowerPC supply sequencing
• Network Routers
• Telecommunications Systems

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix IRZ-T against current Renesas documentation to confirm lead-free status and tape-and-reel packaging configuration. Confirm that the component remains suitable for the intended application as it may be classified as obsolete or not recommended for new designs. Ensure compatibility with the target board's thermal and electrical requirements before procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component when precise control over the startup and shutdown sequence of multiple low-voltage rails is required. It is suitable for systems needing undervoltage fault protection and programmable ramp rates. Consider daisy-chaining capabilities if the design requires sequencing more than four independent voltage sources simultaneously.

Power Supply Controllers, Monitors Part Context

The ISL8723 is part of the Intersil power management portfolio, now managed by Renesas Electronics Corporation following their merger. It belongs to the Power Sequencing Controllers category, specifically designed for managing complex multi-rail power architectures in digital and telecommunications equipment.

Power Supply Controllers, Monitors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.