MIC4605-1YMT-T5

Overview

The MIC4605-1YMT-T5 is a half-bridge MOSFET gate driver manufactured by Microchip Technology, housed in a 10-pin TDFN package. It operates with a supply voltage range of 5.25 V to 16 V and supports dual TTL inputs for independent high-side and low-side control. The device features an adaptive dead-time circuit and breakdown protection to prevent simultaneous MOSFET conduction. Electrical specifications include a peak output current of 1 A, propagation delay of 35 ns, and rise/fall times of 20 ns into a 1000 pF load. It functions within a temperature range of -40°C to +125°C and holds AEC-Q100 qualification.

Feature Summary

• Adaptive dead-time circuit monitors half-bridge transitions to maximize power efficiency
• Breakdown protection prevents erroneous input or noise from turning on both MOSFETs simultaneously
• Adjustable gate drive voltage up to VDD optimizes MOSFET RDS(ON) and minimizes power loss
• Independent high-side and low-side undervoltage lockout ensures safe operation

Applications

• Fan motor control systems
• Power inverters
• Electric bicycle drives
• High-voltage buck regulators
• Three-phase bridge motor drivers

Procurement Notes

Verify component authenticity through authorized Microchip channels due to discontinued status. Confirm RoHS compliance and AEC-Q100 automotive qualification requirements against specific project standards. Validate that the TDFN-10 thermal pad soldering process meets design specifications for reliable heat dissipation during operation.

Selection Notes

Select this component when independent dual-channel control via TTL logic is required for half-bridge topologies. The adjustable gate drive voltage allows optimization of switching losses versus drive strength. Ensure the application benefits from adaptive dead-time management to reduce shoot-through risks without fixed timing constraints.

Part Context

This part belongs to the MIC4605 family of 85V half-bridge MOSFET drivers. It differs from the MIC4605-2 variant by utilizing two TTL inputs rather than a single PWM input with an enable pin. The TDFN-10 package provides a compact surface-mount solution compared to the SOIC-8 version, suitable for space-constrained designs requiring robust gate driving capabilities.

Replacement Considerations

Publicly confirmed direct substitutes are not available as the component is discontinued. Designers may consider the MIC4605-2YM-TR if PWM input functionality is acceptable, though input logic differs. Alternative solutions require manual verification of pin compatibility and electrical parameters.