LM2576HVR-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576HVR-5.0 is a monolithic integrated circuit designed for step-down switching regulator (buck converter) applications, manufactured by TAEJIN Technology Co. It belongs to the LM2576 series and is capable of driving a 3.0A load with excellent line and load regulation. The device features a fixed 5.0V output voltage and operates with a wide input voltage range. It utilizes a 52kHz fixed frequency internal oscillator and requires only four external components for implementation. The unit includes TTL shutdown capability for low power standby modes and incorporates thermal shutdown and current limit protection mechanisms.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Supports a guaranteed 3.0A output current with high efficiency
• Integrates a 52kHz fixed frequency internal oscillator
• Provides built-in thermal shutdown and current limit protection
• Enables low power standby mode through TTL shutdown capability

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 supplies for battery chargers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific part number matches the manufacturer designation for TAEJIN Technology Co., as the LM2576 series is widely produced by multiple vendors including Texas Instruments and others. Confirm the suffix 'HVR' corresponds to the correct package type and temperature rating in the official datasheet. Ensure compatibility with required external component values specified for the 52kHz operation. Check for moisture sensitivity level requirements during storage and handling procedures.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5.0V output is required from a higher input voltage source. It is suitable for designs needing up to 3.0A continuous current without complex feedback networks. Consider the 52kHz switching frequency for inductor size trade-offs compared to higher frequency alternatives. Verify that the input voltage range accommodates the system's maximum supply variations. Ensure the thermal environment supports the package's dissipation capabilities under full load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This component is part of the LM2576 series of SIMPLE SWITCHER regulators, which are standardized buck converter ICs. The series typically offers fixed output voltages including 3.3V, 5.0V, 12V, and 15V, alongside an adjustable version. The LM2576 architecture is known for simplifying power supply design by minimizing external component count. This specific variant provides a regulated 5.0V output, fitting into the common voltage rails used in digital logic and peripheral power distribution.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Cross-reference with other manufacturers' LM2576HV-5.0 equivalents if sourcing constraints exist. Verify pinout compatibility and thermal performance metrics before substitution. Ensure the replacement device maintains the same 52kHz switching frequency to avoid redesigning passive components.