LM2576HVR-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576HVR-3.3 is a monolithic integrated circuit from the LM2576 series, functioning as a step-down (buck) switching regulator manufactured by TAEJIN Technology Co. It provides a fixed 3.3V output and is capable of driving a 3.0A load with excellent line and load regulation. The device operates with a wide input voltage range and utilizes a 52kHz fixed-frequency internal oscillator. Designed for high efficiency, it requires only four external components and includes thermal shutdown and current limit protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed 3.3V output version within the SIMPLE SWITCHER series
• Capable of driving a 3.0A load with high efficiency
• Includes internal 52kHz fixed-frequency oscillator
• Features TTL shutdown capability for low power standby mode

Voltage Regulators - DC DC Switching Regulators Applications

• Simple high-efficiency step-down (buck) regulators
• Efficient pre-regulators for linear regulators
• On-card switching regulators
• Positive to negative converters (buck-boost)
• Power supply for battery chargers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation on the component marking, as the LM2576 series is widely produced by multiple vendors including Texas Instruments and Nisshinbo. Confirm that the specific part number corresponds to the TAEJIN Technology Co. variant rather than other manufacturers' equivalents. Ensure the package type matches the required PCB footprint and check datasheet specifications for moisture sensitivity level and operating temperature range before integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required with up to 3.0A load capacity. It serves as a high-efficiency replacement for three-terminal linear regulators, substantially reducing heat sink size. Consider the wide input voltage range and the need for standard inductors optimized for 52kHz operation. Verify compatibility with system requirements for thermal management and external component availability.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2576 series of SIMPLE SWITCHER regulators, which are designed for easy and convenient design of step-down switching regulators. The series includes fixed output voltages of 3.3V, 5.0V, 12V, 15V, and an adjustable version. The LM2576HVR-3.3 specifically denotes the 3.3V fixed output variant within this family, offering a robust solution for DC-DC conversion applications requiring moderate current and high efficiency.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include LM2576T-3.3 and LM2576HV-3.3 from other manufacturers such as Texas Instruments or ON Semiconductor. Ensure pinout compatibility and verify that the alternative part supports the same 3.0A output current and 52kHz switching frequency. Check for equivalent thermal performance and external component requirements.