LM2576-12BT

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576-12BT is a monolithic integrated circuit step-down switching regulator manufactured by Microchip Technology. It operates as a buck converter with a fixed 12V output voltage and supports up to 3A load current. The device accepts an input voltage range from 4V to 40V and utilizes a fixed 52kHz internal oscillator. It features a TO-220-5 through-hole package, positive adjustable configuration, and single output. Operating temperature spans -40°C to 125°C (TJ).

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a fixed-frequency oscillator for simplified external component requirements.
• Includes internal thermal shutdown and current limit protection circuits.
• Supports direct replacement of linear regulators in existing designs.

Voltage Regulators - DC DC Switching Regulators Applications

• Local area network power distribution systems
• Battery-powered applications requiring high efficiency
• Pre-regulator circuits for switching regulators

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific manufacturer source, as the LM2576 series was originally developed by National Semiconductor before acquisition. Confirm RoHS compliance status and lead time availability directly with authorized distributors, as this part number may be subject to discontinuation or lifecycle changes. Ensure the TO-220-5 package matches the target PCB footprint requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model when a fixed 12V output is required without external feedback resistors. Compare against the LM2576-ADJ variant if variable output voltage flexibility is needed. Consider the LM2576HV series if the input supply exceeds 40V. Evaluate thermal management needs based on the 3A maximum output capability and the thermal resistance of the TO-220-5 package.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2576 family of switching regulators, designed for efficient DC-DC conversion. The 'BT' suffix typically denotes the specific package type and temperature rating within the product line. This series is widely recognized for its simplicity and robustness in standard industrial and commercial power supply designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576WT

Voltage Regulators - DC DC Switching Regulators FAQ

What is the fixed output voltage of the LM2576-12BT?

The LM2576-12BT provides a fixed output voltage of 12V.

Does the LM2576-12BT require external feedback components for voltage setting?

No, the fixed voltage version eliminates the need for external feedback resistors used in the adjustable variant.