LM2575HVT-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575HVT-12 is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments, designed for high-voltage input applications. It operates with an input voltage range of 4 V to 60 V and provides a fixed 12 V output at up to 1 A load current. The device utilizes a buck topology with a typical switching frequency of 58 kHz. It is housed in a TO-220-5 through-hole package, supporting an operating junction temperature range from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch capable of delivering 1 A continuous output current
• Fixed 12 V output option eliminates external feedback resistor requirements
• Internal frequency compensation simplifies design and reduces external component count
• Built-in thermal shutdown and current limit protection for robust operation

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring high input voltage conversion
• Pre-regulators for downstream switching regulators
• Battery-powered systems with wide input voltage variations
• Industrial control circuits operating under harsh environmental conditions

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix and manufacturer source when sourcing this component, as availability varies across distributors. Confirm RoHS compliance status and lead times directly with authorized suppliers, as production status may change. Ensure the TO-220-5 through-hole package matches your PCB footprint requirements before finalizing procurement decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 12 V output is required from a high-voltage input source up to 60 V. The through-hole TO-220-5 package facilitates manual assembly and heat dissipation. Consider the 58 kHz switching frequency for inductor sizing. This regulator is suitable for applications prioritizing simplicity and reliability over ultra-high efficiency or compact surface-mount form factors.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2575HV series of SIMPLE SWITCHER regulators, which are designed for high-input voltage applications. The 'HVT' designation indicates a high-voltage variant with a through-hole TO-220-5 package. The '-12' suffix specifies the fixed 12 V output version, distinguishing it from adjustable or other fixed voltage variants within the same family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575T-12/NOPB: Fixed 12 V output, TO-220-5 package, but limited to 40 V max input voltage.