LM2576HVT-5.0/LB03

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576HVT-5.0/LB03 is a high-voltage step-down switching regulator from the Texas Instruments LM2576 series, designed for through-hole mounting in a five-pin TO-220 package. It operates with an input voltage range of 4V to 60V and provides a fixed 5.0V output at up to 3A load current. The device integrates a 52kHz internal oscillator and features a shutdown pin for power management. It supports an operating temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a fixed-frequency internal oscillator for simplified external component requirements
• Includes a dedicated shutdown control pin to reduce standby power consumption
• Utilizes simple switcher architecture to minimize external passive component count

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring high input voltage tolerance
• Pre-regulators for downstream switching regulators
• Efficient straight-through power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the LB03 suffix indicates specific lead frame or marking variations compared to standard NOPB versions. Confirm RoHS compliance status via the official datasheet as suffixes may affect environmental declarations. Ensure the TO-220 physical dimensions match the target PCB footprint requirements before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a buck converter must handle input voltages up to 60V while maintaining a fixed 5V output. The through-hole TO-220 package facilitates thermal dissipation for continuous 3A loads without complex heatsinking. Compare against LM2596 if higher switching frequencies are required, noting the LM2576's lower 52kHz frequency allows for larger inductors but simpler filtering.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 family of monolithic integrated circuits used for step-down voltage regulation. The 'HV' designation signifies high-voltage input capability, distinguishing it from standard low-voltage variants. The LM2576 series is widely recognized for its robustness and simplicity in industrial power conversion applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576HVT-5.0/NOPB is the direct RoHS-compliant equivalent. LM2576T-5.0/NOPB offers identical electrical performance in a different package variant.