LM25101BMA/NOPB

Overview

The LM25101BMA/NOPB is a half-bridge gate driver manufactured by Texas Instruments, designed for driving N-channel MOSFETs. It operates within a supply voltage range of 9 V to 18 V and supports a maximum high-side bootstrap voltage of 100 V. The device features independent high-side and low-side outputs with a peak output current capability of 3 A. It utilizes an 8-SOIC package with thermal pad (SOIC-8) for surface mount installation. The component ensures reliable switching with rise and fall times of 8 ns and functions across an extended temperature range from -40 °C to +125 °C.

Feature Summary

• Provides independent high-side and low-side drive channels for N-channel MOSFET control
• Supports high-voltage operation with a 100 V maximum bootstrap rating
• Features fast switching characteristics with 8 ns rise and fall times
• Includes undervoltage lockout (UVLO) protection with an 8 V threshold

Applications

• High-side and low-side power stage driving in DC-DC converters
• Synchronous rectification applications in buck converter topologies
• Motor driver circuits requiring robust gate drive signals
• Industrial power supply designs utilizing wide input voltage ranges

Procurement Notes

Verify the specific suffix 'B' against the manufacturer's official datasheet to confirm pinout compatibility and electrical specifications relative to other variants in the LM25101 family. Ensure the SOIC-8 package dimensions match the target PCB footprint. Confirm RoHS compliance status through the latest product change notifications or ordering information documents provided by Texas Instruments before finalizing procurement.

Selection Notes

Select this component when designing circuits that require a dedicated half-bridge driver capable of handling up to 100 V on the high side. The 3 A peak current output is suitable for driving medium-power MOSFETs efficiently. Consider the 8-SOIC package constraints regarding thermal dissipation and board space. Verify that the 9 V minimum supply voltage aligns with the system's available rail during startup and transient conditions.

Part Context

The LM25101 series comprises half-bridge gate drivers intended for various power management applications. This specific part belongs to the LM25101 family, which offers different performance grades and packaging options. It serves as a critical interface between logic-level control signals and high-power switching elements, ensuring precise timing and adequate current delivery for optimal MOSFET performance.

Replacement Considerations

Cross-reference with LM25101AM/NOPB and LM25101CSDX/NOPB for potential substitutes. Verify if alternative packages such as WSON-10 are compatible with the existing design constraints. Check for any updates in the LM25101 family datasheet regarding pinout changes or updated electrical limits.