MIC4605-1YM

Overview

The MIC4605-1YM is an 85V half-bridge MOSFET driver manufactured by Microchip Technology. It operates within a supply voltage range of 5.5 V to 16 V and delivers peak output currents of 1 A for both sourcing and sinking. The device features adaptive dead-time circuitry and shoot-through protection to enhance efficiency and safety. It utilizes an 8-SOIC surface-mount package and supports logic input levels of 0.8 V (VIL) and 2.2 V (VIH). Typical rise and fall times are 20 ns, with an operating temperature range from -40°C to +125°C.

Feature Summary

• Adaptive dead-time circuitry actively monitors outputs to minimize transition time between high-side and low-side MOSFETs.
• Shoot-through protection prevents simultaneous conduction caused by erroneous inputs or noise.
• Supports independent high-side and low-side drive configurations for half-bridge applications.

Applications

• Half-bridge power stage driving in motor control systems
• High-efficiency DC-DC converter topologies
• Industrial power management circuits requiring robust gate drive

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm pinout and electrical characteristics. Confirm availability status as distribution channels may list obsolete or discontinued stock. Ensure the SOIC-8 package matches the target PCB footprint. Validate RoHS compliance requirements for the final assembly process.

Selection Notes

Select this component when an 85V half-bridge driver with integrated adaptive timing is required. It is suitable for designs needing 1A peak drive current and operation up to 125°C junction temperature. Consider the 8-SOIC package constraints and TTL-compatible input thresholds during schematic design.

Part Context

The MIC4605 series includes variants such as the MIC4605-1YM and MIC4605-2YM. These devices belong to Microchip's portfolio of high-voltage gate drivers derived from Micrel technology. The family focuses on providing reliable switching performance for medium-power MOSFET applications with built-in safety features.

Replacement Considerations

Check Microchip datasheets for direct replacements within the MIC4605 series. Verify pin compatibility and electrical ratings before substituting with other manufacturers' half-bridge drivers.

FAQ

What is the function of the adaptive dead-time feature?

It actively monitors the half-bridge outputs to minimize the time between high-side and low-side transitions, maximizing power efficiency while preventing shoot-through.

What are the typical rise and fall times for this driver?

The typical rise and fall times are 20 ns each.