LM5100ASD

Overview

The LM5100ASD is a high-voltage half-bridge gate driver manufactured by National Semiconductor. It integrates high-side and low-side drivers for driving power MOSFETs or IGBTs in bridge configurations. The device supports supply voltages up to 100 V, enabling operation in high-power applications. It features independent high-side and low-side outputs with peak drive currents of 3 A source and 2 A sink capabilities. The component operates within a temperature range of -40°C to +125°C and is housed in a 10-pin LLP package measuring 4 x 4 mm.

Feature Summary

• Integrates high-side and low-side gate drivers for half-bridge topologies
• Supports high voltage operation up to 100 V supply range
• Provides independent output channels for precise switching control

Applications

• Half-bridge power converter circuits
• High-voltage motor drive systems
• Industrial power supply designs

Procurement Notes

Verify the manufacturer designation carefully, as Texas Instruments acquired National Semiconductor's analog business. Ensure the specific suffix matches the required package variant and thermal characteristics. Confirm RoHS compliance status through official documentation, as legacy parts may have different environmental certifications than current production runs.

Selection Notes

Select this component when a dedicated half-bridge driver with high voltage tolerance is required. Compare peak source and sink current ratings against the target power switch requirements. Evaluate the package thermal performance and pinout compatibility with existing PCB layouts. Consider the operating temperature range suitability for the intended industrial or commercial environment.

Part Context

This part belongs to the LM5100 series of high-voltage gate drivers. The series includes variants with different drive current capabilities, such as the LM5101A. These devices are designed for robust performance in demanding power electronics applications requiring reliable isolation between control logic and high-power switches.

Replacement Considerations

Public confirmed substitute part numbers include LM5101ASD-1/NOPB from Texas Instruments.