Image LM2596SX-ADJ
型号: LM2596SX-ADJ
厂商: Texas Instruments Texas Instruments
分类: 半导体集成电路 - IC
描述: voltage regulators - switching regulators
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LM2596SX-ADJ的详细信息

Manufacturer: Texas Instruments
Product Category: Voltage Regulators - Switching Regulators
RoHS: No
Mounting Style: SMD/SMT
Package / Case: TO-263-5
Brand: Texas Instruments
Packaging: Reel
Series: LM2596
Factory Pack Quantity: 500
Type: Voltage Converter
SNVS124C NOVEMBER 1999REVISED APRIL 2013  
®
LM2596 SIMPLE SWITCHER Power Converter 150 kHz  
Check for Samples: LM2596  
1
FEATURES  
DESCRIPTION  
The LM2596 series of regulators are monolithic  
23  
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  
version.  
Adjustable Version Output Voltage Range,  
1.2V to 37V ±4% Max Over Line and Load  
Conditions  
Available in TO-220 and TO-263 Packages  
Ensured 3A Output Load Current  
Input Voltage Range Up to 40V  
Requiring  
a
minimum number of external  
components, these regulators are simple to use and  
include internal frequency compensation , and a  
fixed-frequency oscillator.  
Requires Only 4 External Components  
Excellent Line and Load Regulation  
Specifications  
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  
a
Low Power Standby Mode, IQ Typically 80 μA  
High Efficiency  
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  
Protection  
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.  
APPLICATIONS  
Simple High-Efficiency Step-Down (Buck)  
Regulator  
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)  
fault conditions.  
(1) † Patent Number 5,382,918.  
Typical Application  
(Fixed Output Voltage Versions)  
1
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.  
2
3
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  

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