LM5575MH/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM5575MH/NOPB is a high-voltage step-down switching regulator from Texas Instruments, designed for robust power conversion in demanding environments. It operates with an input voltage range up to 75V and delivers a continuous output current of 1.5A. The device features an adjustable output voltage ranging from 1.225V to 70V and supports a programmable switching frequency between 50kHz and 500kHz. Packaged in a 16-lead HTSSOP with exposed pad, it is qualified under AEC-Q100 standards for automotive applications. The component functions reliably across an extended temperature range from -40°C to +150°C, ensuring stability in harsh operational conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side N-channel MOSFET enables compact design without external gate drive requirements
• Automotive-grade qualification ensures reliability for stringent industry standards
• Wide input voltage capability supports direct connection to high-voltage bus systems
• Programmable switching frequency allows optimization for efficiency and component size

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment and body control module power distribution
• Industrial DC-DC conversion for high-voltage bus architectures
• Point-of-load regulation in telecommunications equipment
• Battery-powered systems requiring wide input voltage tolerance

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'MH' corresponds to the HTSSOP-16 package variant when sourcing. Confirm AEC-Q100 qualification status if automotive compliance is required. Check for lead-free RoHS compliance markers on packaging. Ensure ordering documentation matches the exact part number including the '/NOPB' designation for non-pb-free variants. Validate supplier authenticity through authorized distribution channels to prevent counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltages exceed 42V but require buck topology. Compare against LM25575 for lower voltage applications or LM5574 for reduced current needs. Consider thermal performance in HTSSOP-16 packages for high-power dissipation scenarios. Evaluate switching frequency settings against inductor selection constraints. Verify output voltage adjustability meets system load requirements within the specified range.

Voltage Regulators - DC DC Switching Regulators Part Context

Part of the LM557x family of high-voltage synchronous buck regulators. Shares architectural similarities with LM25575 but offers higher voltage tolerance. Designed as a drop-in replacement for legacy high-voltage controllers in automotive and industrial designs. Integrates protection features typical of Simple Switcher series products.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5575MHX/NOPB offers identical electrical specifications in an X-package variant. LM25575MH/NOPB serves as a lower voltage alternative (42V max) with similar pinout. LM5574MT/NOPB provides comparable functionality at reduced 0.5A output current.