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LM2576HVT-5.0/NOPB

TILM2576HVT-5.0/NOPB

Texas Instruments
Buck Switching Regulator IC Positive Fixed 5V 1 Output 3A TO-220-5
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Overview

The LM2576HVT-5.0/NOPB is a monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator. This high-voltage version is capable of driving a 3A load with excellent line and load regulation while operating at a fixed 52kHz switching frequency. It is designed to simplify power supply design by requiring a minimum number of external components.

Why Choose This Part

The TO-220-5 through-hole package offers excellent thermal management and is easy to mount on heat sinks for high-current applications. Its 3A output capability and internal compensation significantly reduce the PCB footprint and design complexity compared to discrete switching solutions.

Applications

Industrial Power Supplies
Provides a reliable 5V rail for logic circuits and industrial controllers from high-voltage input lines.
Battery Chargers
Efficiently steps down higher battery pack voltages to a regulated 5V for charging portable devices.
Pre-regulator for Linear Regulators
Used as a high-efficiency first stage to reduce voltage before a final linear regulation stage, minimizing heat dissipation.
Distributed Power Systems
Acts as a local point-of-load regulator in systems with a high-voltage DC bus.

Key Specifications

Function Step-Down
Topology Buck
Output Type Fixed
Mounting Type Through Hole
Package / Case TO-220-5
Current - Output 3A
Number of Outputs 1
Output Configuration Positive
Frequency - Switching 52kHz
Operating Temperature -40degC ~ 125degC (TJ)
Synchronous Rectifier No
Voltage - Input (Max) 60V
Voltage - Input (Min) 4V
Supplier Device Package TO-220-5
Voltage - Output (Min/Fixed) 5V

Getting Started

When designing with the LM2576HVT-5.0/NOPB, ensure the input capacitor is placed as close as possible to the VIN and GND pins to minimize noise. Follow the datasheet layout guidelines for the catch diode and inductor to maintain stability at the 52kHz switching frequency. Use the ON/OFF pin to implement system-level power sequencing or to enter a low-power 50uA standby mode.

Part of LM2576/LM2596 Regulators family » LM2576

LM2576 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Output Type Package Voltage - Input (Max) Output V Stock
LM2576HVT-5.0/NOPB (this part) Fixed 5-220 60V 5V 124
LM2576T-12/NOPB Fixed 5-220 40V 12V 1,237
LM2576HVT-12/NOPB Fixed 5-220 60V 12V 483
LM2576T-5.0/NOPB Fixed 5-220 40V 5V 4,891
LM2576S-3.3/NOPB Fixed 6-263 40V 3.3V 812
LM2576S-12/NOPB Fixed 6-263 40V 12V 1,931
LM2576HVSX-ADJ/NOPB Adjustable 6-263 60V 1.23V 1,854
LM2576HVS-3.3/NOPB Fixed 6-263 60V 3.3V 137

Also Consider

LT1074CT#PBF Analog Devices - A higher-capacity 5A switching regulator suitable for applications requiring more current than the 3A LM2576.