LM25574MTX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM25574MTX/NOPB is a SIMPLE SWITCHER® step-down switching regulator manufactured by Texas Instruments. It operates with an input voltage range of 6 V to 42 V and provides an adjustable output voltage from 1.225 V to 40 V. The device delivers a maximum output current of 500 mA. It supports a switching frequency range of 50 kHz to 1 MHz, allowing for optimization of external component size and efficiency. The unit is housed in a 16-TSSOP package with a thermal pad and functions within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage MOSFET enables compact buck converter designs without external power switches.
• Adjustable switching frequency allows designers to balance efficiency against passive component size.
• Includes internal soft-start circuitry to limit inrush current during startup sequences.
• Features cycle-by-cycle current limiting and thermal shutdown for robust protection under fault conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial control systems
• Power supply stages for embedded computing platforms
• Battery-powered equipment requiring efficient voltage conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'X' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation. Ensure the supplier provides valid traceability data. Cross-reference the full part number against the latest datasheet revision to confirm pinout and electrical specifications match design requirements before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring a wide input voltage range up to 42 V. It is suitable where moderate output current around 500 mA is sufficient. Consider the adjustable frequency feature if minimizing inductor size is a priority. Evaluate the TSSOP-16 package constraints regarding thermal dissipation and PCB layout space compared to higher current alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM25574 family of non-synchronous buck regulators. It shares functional similarities with the LM25575 and LM25576 series but differs in output current capabilities and package options. The LM25574 is designed for lower power density applications compared to its higher-current counterparts within the same product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM25574MT/NOPB is listed as a direct substitute. Verify that the tube packaging of the non-X variant meets assembly requirements. Check for any updates in the electrical characteristics or recommended operating conditions between revisions.