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LM1583

更新时间: 2024-11-05 11:46:35
品牌 Logo 应用领域
南京豪纳 - HN 显示器电池开关电视电脑全球定位系统电子DVD手机
页数 文件大小 规格书
10页 508K
描述
3A 开关型、直流-直流降压转换电路。转换效率: 95% 应用:电池充电器,电源分配器,线性降压前的预降压,液晶显示器,机顶盒,路由器, 汽车电子,GPS、车载DVD、 LCD-TV、STB、ADSL、DVB、E-Book、手机、上网本(NB)、笔记本电脑、通讯产品.

LM1583 数据手册

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LM1583  
LM1583  
3A, 23V, 385KHz Step-Down Converter  
DESCRIPTION  
FEATURES  
The LM1583 is a step-down regulator with a  
built-in internal Power MOSFET. It achieves 3A  
of continuous output current over a wide input  
supply range with excellent load and line  
regulation.  
3A Output Current  
Programmable Soft-Start  
100mInternal Power MOSFET Switch  
Stable with Low ESR Output Ceramic Capacitors  
Up to 95% Efficiency  
20μA Shutdown Mode  
Fixed 385KHz Frequency  
Thermal Shutdown  
Cycle-by-Cycle Over Current Protection  
Wide 4.75V to 23V Operating Input Range  
Output Adjustable from 1.22V to 21V  
Under-Voltage Lockout  
Current mode operation provides fast transient  
response and eases loop stabilization.  
Fault  
condition  
protection  
includes  
cycle-by-cycle current limiting and thermal  
shutdown. An adjustable soft-start reduces the  
stress on the input source at startup. In  
shutdown mode the regulator draws 20μA of  
supply current.  
APPLICATIONS  
The LM1583 requires a minimum number of  
external components, providing a compact  
solution.  
Distributed Power Systems  
Battery Chargers  
Pre-Regulator for Linear Regulators  
TOP VIEW  
SOIC8/PDIP8  
BS  
IN  
1
2
3
4
8
7
6
5
SS  
EN  
SW  
GND  
COMP  
FB  
EXPOSED PAD  
(SOIC8E ONLY)  
CONNECT TO PIN 4  
ORDERING INFORMATION  
Part Number*  
LM1583M  
LM1583ME  
LM1583P  
Package  
Top Marking  
LM1583M  
LM1583ME  
LM1583P  
Free Air Temperature (TA)  
–40°C to +85°C  
SOIC8  
SOIC8E  
PDIP8  
–40°C to +85°C  
–40°C to +85°C  
TYPICAL APPLICATION  
Efficiency Curve  
C5  
INPUT  
V
= 10V  
IN  
6.5V to 23V  
100  
90  
80  
70  
60  
50  
10nF  
2
1
L1  
V
=5.0V  
OUT  
15μ H  
IN  
BS  
OUTPUT  
5.0V  
7
3
5
OPEN =  
EN  
SW  
AUTOMATIC  
3A  
LM1583  
STARTUP  
30.9kΩ  
C1  
8
SS  
GND  
FB  
V
=2.5V  
10μ F  
CERAMIC  
OUT  
COMP  
R1  
C2  
22μ F  
CERAMIC  
4
6
V
=3.3V  
D1  
OUT  
10kΩ  
C3  
4.7nF  
R3  
7.5kΩ  
C4  
10nF  
R2  
C6  
NS  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5  
LOAD CURRENT (A)  
地址: 南京市珠江路 88 号,新世界中心 B 4004 , 邮编:210008  
ADD.: RM. 4004, BLOCK B, NEW WORLD CENTER, NO. 88 ZHUJIANG ROAD, NANJING 210008, CHINA  
电话(TEL.): (86)-25-68853600 传真(FAX): (86)-25-68853600-810  
WEB-SITE: WWW.HN-ELEC.COM  
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