LM25574QMT/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM25574QMT/NOPB is a high-voltage step-down switching regulator from Texas Instruments, designed for automotive and industrial applications. It operates with an input voltage range of 6 V to 42 V and delivers a maximum output current of 0.5 A. The device features an adjustable output voltage ranging from 1.225 V to 40 V. It utilizes a fixed internal switching frequency of 50 kHz, extendable up to 1 MHz via an external clock. The component is housed in a 16-TSSOP package and supports operation across a temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch capable of handling input voltages up to 42 V.
• Adjustable output voltage control allowing flexibility for various load requirements.
• External clock synchronization capability enables frequency adjustment or phase alignment.
• Built-in thermal shutdown protection safeguards the device during overheating conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive electronics systems requiring robust power regulation
• Industrial DC-DC conversion circuits
• Distributed power supply architectures

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix matches the exact package type and lead-free status required for your assembly process. Confirm the specific revision level against the manufacturer's latest datasheet to ensure compatibility with your design specifications. Check for any recent product change notices regarding pinout or electrical characteristics before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range and moderate output current are needed in a compact surface-mount package. Ensure the application benefits from the adjustable output feature and potential for external clock synchronization. Verify that the thermal performance of the TSSOP package meets the system's heat dissipation requirements under maximum load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM25574 family of SIMPLE SWITCHER regulators, which are known for their ease of use and minimal external component count. The QMT variant specifically denotes automotive qualification and a TSSOP package. It serves as a versatile solution for converting higher bus voltages to lower regulated levels in space-constrained designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM25574MT/NOPB is a direct non-automotive grade substitute with identical electrical specifications but different qualification standards. LM25574QMTX/NOPB offers the same functionality in a tape-and-reel packaging format suitable for automated assembly processes.