LM2596 SIMPLE SWITCHER® 4.5V to 40V, 3A Low Component Count Step-Down Regulator | TI.com

LM2596 (ACTIVE) SIMPLE SWITCHER® 4.5V to 40V, 3A Low Component Count Step-Down Regulator

SIMPLE SWITCHER® 4.5V to 40V, 3A Low Component Count Step-Down Regulator - LM2596
Datasheet
LM2596 SIMPLE SWITCHER® Power Converter 150-kHz 3-A Step-Down Voltage Regulator datasheet (Rev. D)
 

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Description

The LM2596 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator.

The LM2596 series operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what would be required with lower frequency switching regulators. Available in a standard 7-pin TO-220 package with several different lead bend options, and a 7-pin TO-263 surface mount package.

A standard series of inductors are available from several different manufacturers optimized for use with the LM2596 series. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a ±4% tolerance on output voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 80 µA standby current. Self-protection features include a two stage frequency reducing current limit for the output switch and an overtemperature shutdown for complete protection under fault conditions.

Features

  • 3.3-V, 5-V, 12-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range: 1.2-V
    to 37-V ± 4% Maximum Over Line and Load
    Conditions
  • Available in TO-220 and TO-263 Packages
  • 3-A Output Load Current
  • Input Voltage Range Up to 40 V
  • Requires Only 4 External Components
  • Excellent Line and Load Regulation Specifications
  • 150-kHz Fixed-Frequency Internal Oscillator
  • TTL Shutdown Capability
  • Low Power Standby Mode, IQ, Typically 80 µA
  • High Efficiency
  • Uses Readily Available Standard Inductors
  • Thermal Shutdown and Current-Limit Protection
New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer LM2596

Product Option
  Min   Max Range
Vin –  V
Vout  V
Iout  A
Ambient Temp  °C -40 to 125°C

What are WEBENCH® tools?

Parametrics

Compare all products in Buck converters (integrated switch) Email Download to Excel
Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
LM2596 Order now 4.5     40     3.3     37     3     1     110     173     5     Enable
Over Current Protection    		 Voltage Mode     100     -40 to 125     Catalog     DDPAK/TO-263 | 5
TO-220 | 5    		 Converter     5DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 5)
5TO-220: 86 mm2: 8.47 x 10.16 (TO-220 | 5)    
LM2590HV Order now 4.5     60     3.3     57     1     1     110     173     5     Over Current Protection
Power Good    		 Voltage Mode     100     -40 to 125     Catalog     DDPAK/TO-263 | 7
TO-220 | 7    		 Converter     7DDPAK/TO-263: 154 mm2: 15.24 x 10.1 (DDPAK/TO-263 | 7)
7TO-220: 83 mm2: 8.13 x 10.16 (TO-220 | 7)    
LM2591HV Order now 4.5     60     3.3     57     1     1     110     173     1     Enable
Over Current Protection    		 Voltage Mode     100     -40 to 125     Catalog     DDPAK/TO-263 | 5
TO-220 | 5    		 Converter     5DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 5)
5TO-220: 86 mm2: 8.47 x 10.16 (TO-220 | 5)    
LM2592HV Order now 4.5     60     3.3     57     2     1     110     173     10     Enable
Over Current Protection    		 Voltage Mode     100     -40 to 125     Catalog     DDPAK/TO-263 | 5
TO-220 | 5    		 Converter     5DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 5)
5TO-220: 86 mm2: 8.47 x 10.16 (TO-220 | 5)    
LM2593HV Order now 4.5     60     1.2     57     2     1     110     173     5