IC LM2576HVS-ADJ HV Buck Converter TO263-5
IC LM2576HVS-ADJ HV Buck Converter TO263-5
IC LM2576HVS-ADJ HV Buck Converter TO263-5
IC LM2576HVS-ADJ HV Buck Converter TO263-5

IC LM2576HVS-ADJ HV Buck Converter TO263-5

IC
ICLM2576HVS-ADJ
Part.No: LM2576HVS-ADJ/NOPB
€12.95
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The LM2576HVS-ADJ/NOPB by Texas Instruments is a high-voltage (HV) Step-Down (Buck) DC/DC Converter (PMIC) engineered to handle input voltages up to 60V. It provides an adjustable output voltage with a load driving capability of up to 3A, requiring a minimal number of external components. Operating at a fixed 52 kHz frequency, it ensures reliable performance and comes in an industry-standard surface-mount (SMD) TO263-5 package, perfect for robust power supplies and heavy-duty applications.

 

LM2576HVS-ADJ High Voltage 3A Step-Down Regulator

The LM2576HVS-ADJ/NOPB is part of the renowned series of switching regulators by Texas Instruments, specifically the High Voltage (HVS) variant. It operates as a Step-Down (Buck) DC/DC Converter, safely and efficiently stepping down very high input voltages to lower, regulated output voltages. Its switching design drastically reduces the need for large heatsinks compared to standard linear regulators, maximizing overall system efficiency.

Key Features

  • Input Voltage Range: Exceptionally wide high-voltage operating range from 4V to 60V.
  • Adjustable Output: Programmable output voltage ranging from 1.23V to 57V (via external resistor divider).
  • Output Current: Continuous current delivery up to 3A.
  • Switching Frequency: Internal fixed-frequency oscillator running at 52 kHz.
  • Protection: Features built-in Thermal Shutdown and robust Current Limit protection mechanisms.
  • Efficiency: High switching efficiency, significantly reducing thermal dissipation on the PCB.

Pinout Overview

The SMD TO263-5 package (D2PAK) ensures easy board mounting and optimal thermal dissipation. The 5-pin configuration is as follows:

  • Pin 1 (VIN): Unregulated power supply input voltage (up to 60V).
  • Pin 2 (OUTPUT): Switching output (connects directly to the inductor and catch diode).
  • Pin 3 (GND): Circuit ground.
  • Pin 4 (FEEDBACK): Feedback input to regulate the voltage.
  • Pin 5 (ON/OFF): Logic enable input (Active LOW - ground this pin for normal, continuous operation).

Technical Specifications

IC Type High-Voltage DC/DC Step-Down (Buck) Converter
Brand Texas Instruments
Package TO263-5 (D2PAK) / SMD
Number of Pins 5
Input Voltage (Vin) 4V - 60V
Output Current (Iout) 3A (Maximum continuous)
Operating Temperature -40°C to +125°C

Typical Applications

  • Industrial power supplies and energy management systems requiring a high-voltage input (e.g., 48V distributed bus).
  • High-efficiency step-down regulators in automotive and heavy machinery (24V/36V battery systems).
  • Efficient pre-regulators for sensitive linear regulators.
  • Renewable energy systems and custom solar charge controllers.
IC Case Style
TO263-5
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