Datasheet > LM2594-3.3MWC

LM2594-3.3MWC

更新时间： 2024-11-23 20:47:51

品牌	Logo	应用领域
美国国家半导体 - NSC		开关
页数	文件大小	规格书
28页	737K
描述
IC 1.4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC, WAFER, Switching Regulator or Controller

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LM2594-3.3MWC 技术参数

生命周期：	Transferred	包装说明：	DIE, WAFER
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.55
模拟集成电路 - 其他类型：	SWITCHING REGULATOR	控制模式：	VOLTAGE-MODE
最大输入电压：	40 V	最小输入电压：	4.5 V
标称输入电压：	12 V	JESD-30 代码：	X-XUUC-N
功能数量：	1	最高工作温度：	125 °C
最低工作温度：	-40 °C	最大输出电流：	1.4 A
封装主体材料：	UNSPECIFIED	封装代码：	DIE
封装等效代码：	WAFER	封装形状：	UNSPECIFIED
封装形式：	UNCASED CHIP	认证状态：	Not Qualified
子类别：	Switching Regulator or Controllers	表面贴装：	YES
切换器配置：	BUCK	最大切换频率：	173 kHz
技术：	BIPOLAR	温度等级：	AUTOMOTIVE
端子形式：	NO LEAD	端子位置：	UPPER
Base Number Matches：	1

LM2594-3.3MWC 数据手册

December 1999

LM2594/LM2594HV

SIMPLE SWITCHER^®Power Converter 150 kHz 0.5A

Step-Down Voltage Regulator

The LM2594HV is for applications requiring an input voltage

up to 60V.

General Description

The LM2594/LM2594HV series of regulators are monolithic

integrated circuits that provide all the active functions for a

step-down (buck) switching regulator, capable of driving a

0.5A load with excellent line and load regulation. These de-

vices are available in fixed output voltages of 3.3V, 5V, 12V,

and an adjustable output version, and are packaged in a

8-lead DIP and a 8-lead surface mount package.

Features

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

n Adjustable version output voltage range, 1.2V to 37V

(57V for the HV version) 4% max over line and load

conditions

n Available in 8-pin surface mount and DIP-8 package

n Guaranteed 0.5A output current

n Input voltage range up to 60V

Requiring a minimum number of external components, these

regulators are simple to use and feature internal frequency

†

compensation , a fixed-frequency oscillator, and improved

line and load regulation specifications.

n Requires only 4 external components

n 150 kHz fixed frequency internal oscillator

n TTL Shutdown capability

n Low power standby mode, I_Qtypically 85 µA

n High Efficiency

The LM2594/LM2594HV series operates at a switching fre-

quency of 150 kHz thus allowing smaller sized filter compo-

nents than what would be needed with lower frequency

switching regulators. Because of its high efficiency, the cop-

per traces on the printed circuit board are normally the only

heat sinking needed.

n Uses readily available standard inductors

n Thermal shutdown and current limit protection

A standard series of inductors (both through hole and sur-

face mount types) are available from several different manu-

facturers optimized for use with the LM2594/LM2594HV se-

ries. This feature greatly simplifies the design of

switch-mode power supplies.

Applications

n Simple high-efficiency step-down (buck) regulator

n Efficient pre-regulator for linear regulators

n On-card switching regulators

Other features include a guaranteed 4% tolerance on out-

put voltage under all conditions of input voltage and output

n Positive to Negative convertor

load conditions, and 15% on the oscillator frequency. Ex-

ternal shutdown is included, featuring typically 85 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.

Typical Application (Fixed Output Voltage Versions)

DS012439-1

™

SIMPLE SWITCHER and Switchers Made Simple are registered trademarks of National Semiconductor Corporation.

DS012439

www.national.com

12 3 4 5 6 7...28

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与LM2594-3.3MWC相关器件

型号	品牌	获取价格	描述	数据表
LM2594-5.0MDA	TI	获取价格	IC,SMPS CONTROLLER,VOLTAGE-MODE,BIPOLAR,DIE
LM2594-5.0MDA	NSC	获取价格	IC,SMPS CONTROLLER,VOLTAGE-MODE,BIPOLAR,DIE
LM2594-5.0MDC	NSC	获取价格	IC 1.4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC, DIE, Switching Regulator or
LM2594-5.0MWA	TI	获取价格	IC,SMPS CONTROLLER,VOLTAGE-MODE,BIPOLAR,WAFER
LM2594-5.0MWC	NSC	获取价格	IC 1.4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC, WAFER, Switching Regulator
LM2594-ADJMDC	NSC	获取价格	IC 1.4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC, DIE, Switching Regulator or
LM2594-ADJMWC	NSC	获取价格	IC 1.4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC, WAFER, Switching Regulator
LM2594DADJG	ONSEMI	获取价格	0.5 A, Step-Down Switching Regulator
LM2594DADJR2G	ONSEMI	获取价格	0.5 A, Step-Down Switching Regulator
LM2594HV	TI	获取价格	SIMPLE SWITCHER Power Converter 150-kHz 0.5-A Step-Down Voltage Regulator

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