LM2574HVM-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574HVM-3.3/NOPB is a step-down switching voltage regulator from Texas Instruments, part of the SIMPLE SWITCHER family. It operates with an input voltage range of 4V to 60V and provides a fixed 3.3V output at up to 500mA. The device features a 58kHz switching frequency and supports both buck and inverting topologies. It is housed in a SOIC-Wide-14 surface-mount package and functions within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch for simplified design
• Fixed internal oscillator for consistent timing requirements
• Thermal shutdown protection for operational safety

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for distributed power systems
• Pre-regulation for linear regulators
• Efficient battery-powered supply chains

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as per manufacturer specifications. Ensure the 'HVM' designation matches the required wide-input voltage capability and SOIC-Wide-14 package type for your PCB layout. Cross-reference the datasheet revision to confirm thermal and electrical characteristics align with your system constraints before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an input voltage exceeds 40V, distinguishing it from standard LM2574 variants limited to lower voltages. The fixed 3.3V output eliminates external feedback resistor adjustments. Consider the SOIC-Wide-14 package for adequate thermal dissipation during continuous 500mA operation. Verify that the 58kHz switching frequency fits within your electromagnetic interference filtering requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2574HV series, designed specifically for high-voltage applications compared to the standard LM2574. It shares functional similarities with the LM2574M-3.3 but offers extended input voltage tolerance. The SIMPLE SWITCHER branding indicates a complete, easy-to-use solution requiring minimal external components for basic DC-DC conversion tasks.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574HVMX-3.3/NOPB (Tape and Reel variant)

Voltage Regulators - DC DC Switching Regulators FAQ

Does the LM2574HVM support inverting topology?

Yes, the datasheet specifies that the device supports both Buck (step-down) and Inverting topologies.

What is the maximum input voltage for this regulator?

The maximum input voltage is 60V, allowing it to handle higher source voltages than standard versions.