LM25574MTX

Voltage Regulators - DC DC Switching Regulators Overview

The LM25574MTX is a SIMPLE SWITCHER step-down switching regulator from Texas Instruments, housed in a 16-TSSOP package. It operates with an input voltage range of 6V to 42V and provides a single adjustable output from 1.225V to 40V. The device delivers a maximum output current of 500mA with a fixed internal switch. It supports a switching frequency range of 50kHz to 1MHz and includes features such as cycle-by-cycle current limit, thermal shutdown, and a shutdown pin. The operating junction temperature range is -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch for simplified design
• Adjustable switching frequency allows optimization for size and efficiency
• Built-in protection mechanisms including thermal shutdown and current limiting

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial point-of-load regulation
• Automotive electronics systems
• General-purpose DC-DC conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) against the datasheet to confirm lead-free status and RoHS compliance. Confirm package availability and ensure the ordering code matches the required tape-and-reel quantity. Check for obsolescence notices or PCNs that may affect long-term supply stability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is needed for 42V input systems requiring up to 500mA. Ensure the external inductor and capacitor values are calculated for the desired switching frequency to maintain stability. Verify that the thermal performance of the 16-TSSOP package meets the application's heat dissipation requirements under maximum load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the SIMPLE SWITCHER family, designed for ease of use with minimal external components. It serves as a cost-effective alternative to discrete solutions in space-constrained applications. The device integrates control logic and power MOSFETs into a single monolithic IC.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM25574MT/NOPB and LM25574QMT/NOPB. These variants offer equivalent electrical specifications but may differ in environmental compliance or automotive qualification status.