Datasheet > LM2596

LM2596

更新时间： 2024-10-14 11:46:35

品牌	Logo	应用领域
南京豪纳 - HN		显示器开关电视电子 DVD
页数	文件大小	规格书
7页	170K
描述
3A 开关型、直流-直流降压转换电路。稳压压差要求2V,转换效率: 80-90% 应用:汽车电子,车载DVD,VCD,液晶显示器,液晶电视机

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LM2596 数据手册

LM2596

Feb. 2009

LM2596

3A Step-Down Voltage Regulator

GENARAL 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 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.

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 needed with lower frequency switching regulators. Available in a standard 5-lead TO-220 package with

several different lead bend options, and a 5-lead 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 guaranteed 3% tolerance on output voltage under specified input voltage and output load

conditions, and 15% on the oscillator frequency. External shutdown is included,featuring typically 100 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 fault conditions.

APPLICATIONS

Simple high-efficiency step-down (buck) regulator

On-card switching regulators

Positive to negative converter

FEATURES

3.3V, 5V, 12V, and adjustable output versions

Adjustable version output voltage range, 1.2V to

37V 3% max over line and load conditions

Available in TO-220 and TO-263 packages

Guaranteed 3A output load current

Input voltage range up to 40V

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 100 μA

High efficiency

Uses readily available standard inductors

Thermal shutdown and current limit protection

ORDERING INFORMATION

Output Voltage

Package

Type

3.3

5.0

ADJ

LM2596S-3.3

LM2596T-3.3

LM2596S-5.0

LM2596T-5.0

LM2596S-12

LM2596T-12

LM2596S-ADJ

LM2596T-ADJ

TO-263

TO-220

PIN CONNECTION

Bent and Staggered Leads, Through Hole

Package

5-Lead TO-220 (T)

Surface Mount Package

5-Lead TO-263 (S)

Order Number LM2596S-3.3, LM2596S-5.0,

LM2596S-12 or LM2596S-ADJ

Order Number LM2596T-3.3, LM2596T-5.0,

LM2596T-12 or LM2596T-ADJ

ഄഔ: फҀᏖ⦴∳䏃 88 োˈᮄϪ⬠Ёᖗ B ᑻ 4004 ᅸ, 䚂㓪:210008

⬉䆱(TEL.): (86)-25-68853600 Ӵⳳ(FAX): (86)-25-68853600-810

ADD.: RM. 4004, BLOCK B, NEW WORLD CENTRE,

NANJING 210008, CHINA

WEB-SITE: WWW.HN-ELEC.COM

^{NO. 88 ZHUJIANG RO}1^AD,

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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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