LM5112MYX

Overview

The LM5112MYX is a high-side N-channel MOSFET controller from Texas Instruments designed for robust power management in wide input voltage applications. It features an integrated 100-V, 0.25-Ω power MOSFET and operates within a junction temperature range of -40°C to +125°C. The device utilizes constant on-time (COT) control architecture with a minimum controllable on time of 50 ns, facilitating large step-down conversion ratios. Key electrical parameters include a 6 V to 100 V input voltage range, 2.5 A output current capability, and ultra-low quiescent currents of 3.1 μA in shutdown mode.

Feature Summary

• Integrated 100-V power MOSFET eliminates external switching components
• Constant on-time control architecture simplifies loop compensation
• Ultra-low quiescent current supports energy-efficient standby modes

Applications

• Hybrid, electric, and powertrain systems
• Inverter and motor control circuits
• Industrial transport power supplies

Procurement Notes

Verify the specific suffix 'MYX' against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with required thermal dissipation standards for the MSOP-PowerPad package. Cross-reference RoHS compliance status directly with the component marking or official documentation prior to integration.

Selection Notes

Select this component when a compact solution for high-voltage buck conversion is required without external switching losses. The integrated MOSFET reduces bill-of-materials count and board space. Consider the 50-ns minimum on time for applications requiring significant voltage step-down ratios from nominal 48-V inputs.

Part Context

This part belongs to the LM5012 family of non-synchronous buck converters. It is pin-to-pin compatible with related devices such as the LM5163, LM5164, and LM5013-Q1, allowing for scalable industrial power supply designs across different current ratings while maintaining the same 100-V input specification.

Replacement Considerations

Officially documented pin-compatible substitutes include the LM5163, LM5164, and LM5013-Q1. Verify that the alternative part meets the specific output current requirements of the design, as these variants offer different current capabilities.