LM25575MH

Voltage Regulators - DC DC Switching Regulators Overview

The LM25575MH is a high-voltage step-down switching regulator manufactured by Texas Instruments. It operates with an input voltage range of 6 V to 42 V and delivers up to 1.5 A of output current. The device supports adjustable output voltages from 1.225 V to 40 V. It utilizes current-mode control with pulse width modulation for stable regulation. The component is housed in a 16-pin HTSSOP package with exposed pad. It functions within a temperature range of -40°C to +125°C and includes integrated features such as soft-start, frequency synchronization, and thermal shutdown.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side N-channel power switch eliminates the need for external Schottky diode
• Current-mode control architecture ensures fast transient response and inherent cycle-by-cycle current limiting
• Frequency synchronization capability allows multiple units to operate at different frequencies to reduce audible noise

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial systems
• Power supply stages for automotive electronics
• Distributed power architectures in telecommunications equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix designation to confirm lead-free status and packaging type. The base part number may correspond to non-compliant variants; ensure the selected order matches the required environmental standards and reel or tube configuration. Cross-reference the full ordering code against official manufacturer documentation to avoid discrepancies in pinout or electrical specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing buck converters requiring wide input voltage ranges up to 42 V. It is suitable for applications needing adjustable outputs with moderate current demands. Consider the thermal performance of the HTSSOP package and ensure adequate PCB copper area for heat dissipation. Verify that the required switching frequency falls within the internal oscillator range or can be synchronized externally.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the SIMPLE SWITCHER family of regulators, designed for ease of use with minimal external components. It serves as a solution for converting higher bus voltages to lower logic or sensor supply levels. The series emphasizes compact design and robust protection features for harsh environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include LM25575MHX/NOPB for tape-and-reel packaging or LM25575MH/NOPB for tube packaging. Ensure the substitute maintains the same 16-pin HTSSOP-EP footprint and electrical characteristics.