LM2574HVM-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574HVM-3.3 is a high-voltage step-down switching voltage regulator manufactured by Texas Instruments, part of the SIMPLE SWITCHER family. It operates with an input voltage range from 4 V to 60 V and provides a fixed 3.3 V output at up to 500 mA. The device utilizes a buck topology with a typical switching frequency of 58 kHz. It is housed in a 14-pin SOIC-Wide package and supports operation across an extended temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch capable of handling high input voltages up to 60 V
• Fixed internal switching frequency eliminates external timing component requirements
• Built-in thermal shutdown and current limit protection for robust operation

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply architectures requiring high-voltage step-down conversion
• Battery-powered systems utilizing high-voltage battery packs
• Industrial control equipment operating under harsh environmental conditions

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) against the manufacturer's datasheet to confirm lead-free compliance and exact pinout configuration. Ensure the selected package variant matches the intended PCB footprint and thermal management strategy. Cross-reference the ordering information directly with official Texas Instruments documentation to avoid discrepancies in revision levels or packaging types.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an input voltage exceeds the capabilities of standard low-voltage regulators but remains below 60 V. The fixed 3.3 V output makes it suitable for powering digital logic or microcontrollers directly from higher voltage rails. Consider the 500 mA output current limit and the need for external inductor and capacitor selection based on the required ripple and load transient specifications.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2574HV series, designed specifically for high-input voltage applications compared to the standard LM2574. It shares functional similarities with other SIMPLE SWITCHER regulators but distinguishes itself through its ability to handle wider input voltage ranges while maintaining efficiency and simplicity in external component count.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574HVMX-3.3/NOPB