Datasheet > LM2596

LM2596

更新时间： 2024-11-18 12:27:51

品牌	Logo	应用领域
戈采 - FCI		转换器
页数	文件大小	规格书
14页	1109K
描述
Simple switcher Power Converter 150kHz Simple switcher Power Converter 150kHz

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LM2596 数据手册

LM2596 Simple switcher Power Converter 150kHz

3A Step-Down Voltage Regulator

GENERAL DESCRIPTION

FEATURES

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.

•

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

Adjustable version output voltage range, 1.2V to 37V

±4% 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

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.

Low power standby mode, I_Qtypically 80 UA

High efficiency

Uses readily available standard inductors

Thermal shutdown and current limit protection

APPLICATIONS

•

Simple high-efficiency step-down (buck) regulator

On-card switching regulators

Positive to negative converter

Other features include a guaranteed ±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 UA 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.

TYPICAL APPLICATION (Fixed Output Voltage Versions)

+V_IN

12V

LM2596

5.0

5.0V

C_OUT

220

C_IN

µF

680

BLOCK DIAGRAM

ON/OFF

V_IN

START

COM

2.5V

COM

FEEDBACK

AMP

LATCH

DRIVER

Active

capacitor

OUTPUT

150kHz

OSC

GND

12 3 4 5 6 7...14

中文翻译

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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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