LM5101BMA

Overview

The LM5101BMA/NOPB is a high-voltage half-bridge gate driver manufactured by Texas Instruments, designed for driving N-channel MOSFETs in power conversion applications. It integrates independent high-side and low-side drivers within an 8-pin SOIC package. The device supports a supply voltage range of 9 V to 14 V and delivers a peak output current of 2 A. Key electrical specifications include a maximum propagation delay of 26 ns, with rise and fall times of 570 ns and 430 ns, respectively. It operates reliably across a temperature range from -40°C to +125°C.

Feature Summary

• Integrates independent high-side and low-side gate drivers for half-bridge configurations
• Provides robust 2 A peak source and sink output current capability
• Features non-inverting logic inputs compatible with TTL standards
• Includes built-in under-voltage lockout protection for reliable operation

Applications

• High-side and low-side gate driving for N-channel MOSFETs
• Half-bridge power converter topologies
• Isolated DC-DC converter designs
• Motor control driver stages

Procurement Notes

Verify the complete part number suffix, specifically /NOPB, to ensure compliance with RoHS directives and lead-free manufacturing requirements as specified by Texas Instruments. Confirm that the SOIC-8 package variant matches the design footprint. Cross-reference the specific B-grade current rating against alternative A or C grades if higher drive strength is required for the target application.

Selection Notes

Select this component when a dedicated half-bridge driver with moderate 2 A drive strength is required for N-channel MOSFETs. The LM5101BMA offers a balance of speed and current capability suitable for general-purpose isolated converters. Consider the LM5101AMX/NOPB if a higher 3 A output current is necessary, or the LM5100 series for different pinout or current requirements. Ensure the input logic voltage levels are compatible with the controller's output.

Part Context

The LM5101BMA belongs to the LM5101 family of high-voltage gate drivers from Texas Instruments. This family includes variants such as the LM5101A (3 A) and LM5101C (1 A), differentiated primarily by their peak output current capabilities while maintaining similar functional architectures. These devices are part of the broader portfolio of power management ICs designed for efficient energy conversion and motor control systems.

Replacement Considerations

LM5101AM/NOPB provides equivalent functionality with increased 3 A output current. LM5101CM/NOPB offers reduced 1 A drive strength. LM5100BMAX/NOPB is a related device but may differ in specific pin configurations or current ratings; verify datasheet compatibility before substitution.