LM2576-12WU

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576-12WU is a fixed-output buck switching regulator IC manufactured by Microchip Technology. It provides a nominal output voltage of 12 V with a maximum output current of 3 A. The device operates within an input voltage range of 4 V to 40 V and features a typical switching frequency of 52 kHz. It utilizes a TO-263-5 (D2PAK) flange mount package. The component supports an operating temperature range from -40 °C to +85 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic buck converter topology for step-down voltage regulation
• Built-in fixed-frequency oscillator eliminates the need for external frequency compensation
• Internal thermal shutdown and current limiting mechanisms ensure operational safety

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial control power supplies
• Automotive electronics systems
• Distributed power supply architectures

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific manufacturer source, as this part number has been produced by multiple vendors including Microchip and onsemi. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability varies significantly between original equipment manufacturers and third-party suppliers. Ensure the package marking matches the intended supplier for quality assurance.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output at up to 3 A is required from a wide input voltage range. The TO-263-5 package facilitates efficient heat dissipation through the tab, suitable for applications requiring moderate power handling without complex cooling solutions. Consider the 52 kHz switching frequency for standard EMI constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the LM2576 family of simple switcher devices. The family offers various fixed output voltages and adjustable versions. The 'WU' suffix typically denotes the TO-263-5 surface-mount package variant, distinguishing it from through-hole options like the TO-220 package found in other series members.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576-12WT

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage supported by the LM2576-12WU?

The maximum input voltage is 40 V.

Does the LM2576-12WU require external frequency compensation?

No, the device includes an internal fixed-frequency oscillator and frequency compensation, reducing the number of external components needed.