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LM2596S-5.0/NOPB

3A buck, 5V fixed, 40V max, 150kHz, TO-263-5

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Manufacturer Part：

LM2596S-5.0/NOPB

Package：

TO-263-5 (DDPAK-5, 10.16 x 15.24 mm)

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Description

Product Overview

The LM2596S-5.0/NOPB from Texas Instruments is a SIMPLE SWITCHER 3A step-down voltage regulator with fixed 5V output in a 5-pin TO-263 surface-mount package. Operating at 150kHz fixed frequency with up to 40V input, it requires only 4 external components and achieves up to 93% efficiency. The ON/OFF pin enables TTL-level shutdown with 80uA standby current.

Key Specifications

Output Voltage 5.0V fixed (also 3.3V, 12V, adj)
Input Voltage 4.5V to 40V
Output Current 3A
Switching Frequency 150kHz fixed
Efficiency Up to 93%
Standby Current 80uA typical (ON/OFF=high)
Output Tolerance +/-4% max over line and load
Protection Thermal shutdown, current limit
Operating Temp -40 to +125 C (TJ)
Package TO-263-5 (DDPAK)

Features

  • 3A output with only 4 external components
  • 150kHz fixed frequency for small filter components
  • TTL-level ON/OFF shutdown control
  • 80uA low standby current
  • Internal frequency compensation
  • Thermal shutdown and current limit protection

Applications

  • Distributed power systems (5V from 12V/24V)
  • Battery chargers
  • LED drivers
  • Embedded system power supplies

The LM2596S-5.0/NOPB from Texas Instruments is a SIMPLE SWITCHER 3A step-down voltage regulator with fixed 5V output in a 5-pin TO-263 surface-mount package. Operating at 150kHz fixed frequency with up to 40V input, it requires only 4 external components and achieves up to 93% efficiency. The ON/OFF pin enables TTL-level shutdown with 80uA standby current.

The LM2596S-5.0/NOPB operates as described in the product overview. Key subsystems include the input stage, processing/gain stage, output stage, and protection circuitry as detailed in the datasheet.

Pin Name Type Description
1 VIN Input Unregulated input (4.5-40V)
2 OUTPUT Output Switch output to inductor
3 GND Power Ground
4 FEEDBACK Input Feedback (connect to output for fixed ver)
5 ON/OFF Input Shutdown control (high=off)
Tab GND Power Ground/thermal pad
  • Distributed power systems (5V from 12V/24V)
  • Battery chargers
  • LED drivers
  • Embedded system power supplies
Model Manufacturer Package Notes
LM2596T-5.0 TI TO-220-5 Through-hole version
LM2676S-5.0 TI TO-263-7 Higher efficiency, 260kHz
MP1584EN-LF-Z MPS SOIC-8 1.5MHz, smaller
LMR33630ADDFR TI SOT-23-THIN Modern replacement
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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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