Datasheet > 电源电路 > 开关式稳压器或控制器> LM2594N-ADJ

LM2594N-ADJ

更新时间： 2024-09-14 22:25:27

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器稳压器
页数	文件大小	规格书
28页	742K
描述
SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator

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技术参数
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LM2594N-ADJ 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	0.300 INCH, PLASTIC, DIP-8	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.07	其他特性：	ALSO OPERATES IN ADJUSTABLE MODE FROM 1.2V TO 37V
模拟集成电路 - 其他类型：	SWITCHING REGULATOR	控制模式：	VOLTAGE-MODE
控制技术：	PULSE WIDTH MODULATION	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：	R-PDIP-T8	JESD-609代码：	e0
长度：	9.817 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	8
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	标称输出电压：	1.23 V
封装主体材料：	PLASTIC/EPOXY	封装代码：	DIP
封装等效代码：	DIP8,.3	封装形状：	RECTANGULAR
封装形式：	IN-LINE	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	座面最大高度：	5.08 mm
子类别：	Switching Regulator or Controllers	最大供电电流 (Isup)：	10 mA
表面贴装：	NO	切换器配置：	BUCK
最大切换频率：	173 kHz	技术：	BIPOLAR
温度等级：	AUTOMOTIVE	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	40
宽度：	7.62 mm	Base Number Matches：	1

LM2594N-ADJ 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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LM2594N-ADJ 替代型号

型号	品牌	替代类型	描述	数据表
LM2594HVN-ADJ	NSC	类似代替	SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2594HVN-ADJ	TI	功能相似	LM2594/LM2594HV SIMPLE SWITCHERÂ® Power Conve
MIC4574BN	MICREL	功能相似	200kHz Simple 0.5A Buck Voltage Regulator

与LM2594N-ADJ相关器件

型号	品牌	获取价格	描述	数据表
LM2594N-ADJ/NOPB	TI	获取价格	LM2594/LM2594HV SIMPLE SWITCHERÂ® Power Conve
LM2594PADJG	ONSEMI	获取价格	0.5 A, Step-Down Switching Regulator
LM2595	NSC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
LM2595	ONSEMI	获取价格	1.0 A, Step-Down Switching Regulator
LM2595	TI	获取价格	LM2595 SIMPLE SWITCHERÂ® Power Converter 150
LM2595	HGSEMI	获取价格	电源转换器 150Khz 3A 降压调压器
LM2595(HV)	UMW	获取价格	DC-DC芯片
LM2595_13	TI	获取价格	SIMPLE SWITCHERÂ® Power Converter 150 kHz 1A
LM2595_17	TI	获取价格	SIMPLE SWITCHER Power Converter 150-kHz 1-A Step-Down Voltage Regulator
LM2595-3.3MDC	NSC	获取价格	IC 2.6 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC, DIE, Switching Regulator or

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