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MIC4478YME-TR
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Product Detailed Parameters
- Description：IC GATE DRVR LOW-SIDE 8SOIC
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Driven Configuration：Low-Side
- Channel Type：Independent
- Number of Drivers：2
- Gate Type：MOSFET (N-Channel)
- Voltage - Supply：4.5V ~ 32V
- Logic Voltage - VIL, VIH：0.8V, 2.4V
- Current - Peak Output (Source, Sink)：2.5A, 2.5A
- Input Type：Non-Inverting
- Rise / Fall Time (Typ)：120ns, 45ns
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-SOIC-EP
- High Side Voltage - Max (Bootstrap)：-
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Overview
The MIC4478YME-TR is a dual, low-side, non-inverting N-Channel MOSFET gate driver manufactured by Microchip Technology. It operates within a supply voltage range of 4.5 V to 32 V and delivers a peak output current of 2.5 A. The device is housed in an 8-pin SOIC package with an exposed pad (SOIC-8-EP) for enhanced thermal performance. Designed for independent channel control, it supports low-voltage DC-to-DC conversion applications with fast switching capabilities.
Feature Summary
- Dual independent low-side gate driver channels for precise N-Channel MOSFET control
- High peak output current capability of 2.5 A for efficient switching
- Integrated exposed pad design in SOIC-8-EP package for improved thermal dissipation
- Non-inverting logic configuration simplifies interface with control signals
Applications
- Low-voltage DC-to-DC converter circuits
- Synchronous rectification stages in power supplies
- Motor drive interfaces requiring low-side switching
Procurement Notes
Verify the specific suffix 'TR' indicates tape-and-reel packaging when ordering. Confirm the manufacturer is Microchip Technology, as distributors may list similar part numbers from other vendors. Check for obsolescence status, as some sources indicate this component may be discontinued or have limited availability. Ensure the 8-SOIC-EP package matches your PCB footprint requirements before finalizing procurement.
Selection Notes
Select this component when a dual low-side driver with high current capability is required for N-Channel MOSFETs. The 2.5 A output current suits moderate-power applications compared to lower-current alternatives. The exposed pad package necessitates specific thermal management considerations on the PCB layout. Verify that the 32 V maximum supply voltage aligns with the system's power rail specifications.
Part Context
This part belongs to the MIC4478 family of gate drivers. It is distinct from the MIC4468 (quad driver) and MIC4128 (dual inverting/non-inverting). The MIC4478 specifically focuses on dual low-side non-inverting applications. It differs from the MIC4478YME-T5 only in packaging format, with 'TR' denoting reel packaging.
Replacement Considerations
Publicly confirmed substitute part number: TC4432VOA. Verify pinout compatibility and electrical specifications against the original datasheet before substitution.
