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
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