|Type ：||Converter (Integrated Switch)|
|Approx. Price (US$) ：||1.80 | 1ku|
|Regulated Outputs(#) ：||1|
|Market Segment ：||Industrial|
|Brand ：||SIMPLE SWITCHER|
|Control Mode ：||Voltage Mode|
|Package Group ：||DDPAK/TO-263,TO-220|
|Operating Temperature Range(C) ：||-40 to 125|
SNVS124C –NOVEMBER 1999–REVISED APRIL 2013
LM2596 SIMPLE SWITCHER Power Converter 150 kHz
Check for Samples: LM2596
The LM2596 series of regulators are monolithic
3.3V, 5V, 12V, and Adjustable Output Versions
integrated circuits that provide all the active functions
for a step-down (buck) switching regulator, capable of
driving a 3A load with excellent line and load
regulation. These devices are available in fixed output
voltages of 3.3V, 5V, 12V, and an adjustable output
Adjustable Version Output Voltage Range,
1.2V to 37V ±4% Max Over Line and Load
Available in TO-220 and TO-263 Packages
Ensured 3A Output Load Current
Input Voltage Range Up to 40V
minimum number of external
components, these regulators are simple to use and
include internal frequency compensation , and a
Requires Only 4 External Components
Excellent Line and Load Regulation
The LM2596 series operates at a switching frequency
of 150 kHz thus allowing smaller sized filter
components than what would be needed with lower
150 kHz Fixed Frequency Internal Oscillator
TTL Shutdown Capability
frequency switching regulators. Available in
Low Power Standby Mode, IQ Typically 80 μA
standard 5-lead TO-220 package with several
different lead bend options, and a 5-lead TO-263
surface mount package.
Uses Readily Available Standard Inductors
Thermal Shutdown and Current Limit
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.
Simple High-Efficiency Step-Down (Buck)
Other features include a ensured ±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 over
temperature shutdown for complete protection under
On-Card Switching Regulators
Positive to Negative Converter
(1) † Patent Number 5,382,918.
(Fixed Output Voltage Versions)
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SIMPLE SWITCHER is a registered trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2013, Texas Instruments Incorporated