LM2596

更新时间： 2024-11-09 12:09:43

品牌	Logo	应用领域
德州仪器 - TI		稳压器开关驱动
页数	文件大小	规格书
42页	4730K
描述
monolithic 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.

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LM2596 数据手册

LM2596

www.ti.com

SNVS124C –NOVEMBER 1999–REVISED APRIL 2013

LM2596 SIMPLE SWITCHER Power Converter 150 kHz

3A Step-Down Voltage Regulator

Check for Samples: LM2596

FEATURES

DESCRIPTION

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

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

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

Low Power Standby Mode, I_QTypically 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)

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.

12 3 4 5 6 7...42

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LM2596 替代型号

型号	品牌	替代类型	描述	数据表
LM43603	TI	功能相似	3.5V 至 36V、3A 同步降压转换器

与LM2596相关器件

型号	品牌	获取价格	描述	数据表
LM2596-12E5	CYSTEKEC	获取价格	150kHz, 3A PWM Buck DC/DC Converter
LM2596-12F5	CYSTEKEC	获取价格	150kHz, 3A PWM Buck DC/DC Converter
LM2596-12MWC	NSC	获取价格	IC 7.5 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC, WAFER, Switching Regulator
LM2596-3.3MDC	NSC	获取价格	7.5A SWITCHING REGULATOR, 173kHz SWITCHING FREQ-MAX, UUC, DIE
LM2596-3.3MWC	NSC	获取价格	IC 7.5 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC, WAFER, Switching Regulator
LM2596-33E5	CYSTEKEC	获取价格	150kHz, 3A PWM Buck DC/DC Converter
LM2596-33F5	CYSTEKEC	获取价格	150kHz, 3A PWM Buck DC/DC Converter
LM2596-5.0MDC	NSC	获取价格	IC 7.5 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC, DIE, Switching Regulator or
LM2596-50E5	CYSTEKEC	获取价格	150kHz, 3A PWM Buck DC/DC Converter
LM2596-50F5	CYSTEKEC	获取价格	150kHz, 3A PWM Buck DC/DC Converter

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