LM2575S-3.3 TO-263-5 3.3V 1A DC-DC Buck Switching Regulator IC

LM2575S-3.3 TO-263-5 3.3V 1A DC-DC Step-Down (Buck) Voltage Regulator IC

The LM2575S-3.3 is a switching DC-DC step-down (buck) voltage regulator designed to convert higher input voltages to a fixed 3.3V output. With an output current capability of up to 1A, this device is widely used in microcontroller power supplies, industrial control circuits, embedded systems, and power management applications.

Featuring a TO-263-5 (D2PAK) package, the LM2575S-3.3 integrates an internal switching transistor and operates over a wide input voltage range, reducing the need for external components. High efficiency, built-in thermal shutdown, and current limiting protection make it a reliable solution for compact and robust power supply designs.

LM2575S-3.3 Technical Specifications:

• DC-DC step-down (buck) switching voltage regulator

• Fixed output voltage: 3.3V

• Maximum output current: 1A

• Input voltage range: 4V – 40V

• Switching frequency: 47kHz – 58kHz

• Output type: Fixed

• Built-in switching transistor

• Quiescent current: 10mA

• Operating temperature range: -40°C ~ +125°C

• Package type: TO-263-5 (SMD)

Useful Links / Documents:

• Datasheet
• EasyEDA Model

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• DC-DC Voltage Regulators