LM5109ASDX - Texas Instruments

Manufacturer Part Number

LM5109ASDX

Manufacturer

Texas Instruments

Introduction

High-voltage gate driver for N-channel MOSFETs designed for high-speed applications

Product Features and Performance

Drives two N-channel MOSFETs in a half-bridge configuration

Independent channel operation

Support for high side voltage up to 108V (Bootstrap)

Fast rise and fall times of 15ns each, optimizing switching performance

Non-inverting input for easier integration with control logic

Thermal shutdown and undervoltage lockout for enhanced protection

Able to operate across a wide temperature range from -40°C to 125°C

Product Advantages

Integrated bootstrap diode for reduced external components

Peak output current of 1A for both source and sink allows for efficient driving of MOSFETs

Optimized for high-frequency operation, which can improve power efficiency

Small 8-WDFN package saves board space

Key Technical Parameters

Driven Configuration: Half-Bridge

Number of Drivers: 2

Gate Type: N-Channel MOSFET

Supply Voltage Range: 8V to 14V

Logic Voltage - VIL, VIH: 0.8V, 2.2V

Peak Output Current (Source, Sink): 1A

High Side Voltage - Max (Bootstrap): 108V

Rise/Fall Time (Typical): 15ns

Operating Temperature Range: -40°C to 125°C

Quality and Safety Features

Under-voltage lockout for input voltage

Thermal shutdown feature for over-temperature protection

Compatibility

Compatible with high-speed power conversion applications requiring N-Channel MOSFet driving

Application Areas

Switch mode power supplies (SMPS)

DC to DC converters

Motor controllers for industrial, automotive, and consumer applications

Product Lifecycle

Obsolete product

Potential need to consider alternative drivers or next-generation products for new designs

Several Key Reasons to Choose This Product

High integration level with bootstrap diode included

Suitable for high-efficiency, high-speed switching applications

Robust thermal and under-voltage protections for improved reliability

Minimal rise and fall times for faster switching speeds

Industry-leading performance from Texas Instruments