LM5112SDX

Overview

The LM5112SDX is a low-side gate driver from Texas Instruments designed for driving N-channel MOSFETs. It features a single channel with inverting and non-inverting inputs, housed in a compact 6-WSON (3x3 mm) package. The device supports a supply voltage range of 3.5V to 14V and delivers peak output currents of 3A source and 7A sink. Typical propagation delays are characterized by rise and fall times of 14ns and 12ns respectively. It operates within an extended junction temperature range of -40°C to 125°C.

Feature Summary

• Provides high-current drive capability with asymmetric sourcing and sinking outputs optimized for fast MOSFET switching.
• Integrates dual logic inputs allowing flexible control configurations for inverting or non-inverting signal paths.
• Utilizes a small footprint surface-mount package to minimize PCB area requirements in dense power designs.

Applications

• Low-side switching stages in synchronous buck converters
• Gate drive interfaces for power MOSFETs in motor control circuits
• General-purpose high-speed switching applications requiring isolated or direct drive

Procurement Notes

Verify the specific suffix 'SDX' against current manufacturer documentation, as it may indicate a tape-and-reel variant or legacy designation. Confirm RoHS compliance status and ensure the component matches the required automotive or industrial qualification standards if applicable to your system design. Cross-reference with active equivalents like LM5112SD/NOPB for availability.

Selection Notes

Select this component when a single-channel low-side driver with moderate speed and high peak current is required. Ensure the input logic levels are compatible with the controlling microcontroller or FPGA. Consider thermal performance under continuous load conditions given the small WSON package size and verify that the supply voltage remains within the specified operational limits during transient events.

Part Context

This part belongs to the LM511x family of gate drivers from Texas Instruments, which focuses on providing robust driving solutions for power management applications. The LM5112 specifically targets cost-sensitive and space-constrained designs where a single low-side switch needs reliable and fast switching characteristics without the complexity of high-side or bootstrap circuitry.

Replacement Considerations

LM5112SD/NOPB is a verified equivalent offering identical electrical specifications and pinout compatibility. Verify package marking differences and ensure any ordering suffix changes do not affect material composition or testing standards before substitution.