ISL6605IBZ

Gate Driver Overview

The ISL6605IBZ is a synchronous rectified MOSFET driver designed for high-frequency buck converter topologies. It drives two N-channel power MOSFETs with a maximum output current of 4 A and an on-resistance of 0.4 Ω. The device features ultra-low propagation delay of 8 ns, with rise and fall times of 8 ns each. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an input logic high level of 2 V. The component is housed in an 8-SOIC package and functions within a temperature range of -40°C to +85°C.

Gate Driver Feature Summary

• Integrates adaptive shoot-through protection to prevent cross-conduction in synchronous rectification applications.
• Includes an internal bootstrap Schottky diode to simplify external circuit design and reduce component count.
• Provides three-state PWM input functionality to enable complete shutdown of the power stage when required.

Gate Driver Applications

• Core voltage supplies for Intel and AMD microprocessors
• High frequency low profile DC/DC converters
• Synchronous rectification for isolated power supplies

Gate Driver Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm RoHS compliance and moisture sensitivity levels prior to assembly. Review official discontinuance notifications for timeline constraints. Ensure storage conditions meet specified humidity requirements to maintain reliability during manufacturing processes.

Gate Driver Selection Notes

Select this driver for designs requiring fast switching speeds and minimal propagation delay in multi-phase buck converters. The SOIC-8 package offers a balance between thermal performance and board space efficiency compared to smaller footprints. Consider the 4 A sink capability for driving moderate-power N-channel MOSFETs without external amplification.

Gate Driver Part Context

The ISL6605 series serves as a specialized gate driver for synchronous rectified buck converters, often paired with Intersil HIP63xx or ISL65xx PWM controllers. This specific variant utilizes an 8-SOIC package, differing from QFN versions like the ISL6605IRZ. It belongs to the Renesas/Intersil portfolio focused on high-efficiency core voltage regulation for advanced processors.

Gate Driver Replacement Considerations

Official substitutes include ISL6605CBZ and ISL6605IRZ. Verify pin compatibility and package dimensions before substitution. Check datasheet specifications for identical electrical parameters such as output current and propagation delay to ensure functional equivalence in existing designs.