LM25574MT/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM25574MT/NOPB is a step-down switching regulator from the SIMPLE SWITCHER family, manufactured by Texas Instruments. It operates with an input voltage range of 6 V to 42 V and provides a maximum output current of 500 mA. The device features an adjustable output voltage ranging from 1.225 V to 40 V. It supports a switching frequency between 50 kHz and 1 MHz and includes a shutdown function. The component is housed in a 16-TSSOP package and functions within a junction temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch for buck topology
• Adjustable output voltage capability via external resistors
• Built-in thermal shutdown protection mechanism
• Low quiescent operating current for efficiency

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial systems
• Power supply stages for embedded controllers
• Battery-powered equipment requiring efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm RoHS compliance and lead-free status. Ensure the package type matches the design requirements. Confirm availability through authorized distributors as manufacturing status may vary. Cross-reference the part number with the latest datasheet revision to ensure functional compatibility.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an adjustable output voltage is required within a 42 V input limit. It is suitable for designs needing moderate output current up to 500 mA. Consider the thermal performance in the TSSOP package for high-temperature environments. Verify that the chosen switching frequency aligns with passive component selection constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM25574 series of SIMPLE SWITCHER regulators. It shares architectural similarities with other members like the LM25576 but differs in output current capacity. The series is designed for simplified power supply design using minimal external components. It serves as a direct replacement for older non-NOPB variants if pinout and specifications remain identical.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM25574QMT/NOPB is listed as a direct substitute.