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AS2955AU-5.0 PDF预览

AS2955AU-5.0

更新时间: 2024-01-04 14:01:52
品牌 Logo 应用领域
西伯斯 - SIPEX /
页数 文件大小 规格书
7页 144K
描述
Regulator,

AS2955AU-5.0 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
Reach Compliance Code:unknown风险等级:5.67
Base Number Matches:1

AS2955AU-5.0 数据手册

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AS2955/56/57  
350mA Low Drop Out Voltage Regulator  
with Shutdown  
(PRELIMINARY INFORMATION)  
FEATURES  
APPLICATIONS  
Output Accuracy 5V, 3.3V@ 350mA Output  
Very Low Quiescent Current  
Battery Powered Systems  
Cordless Telephones  
Low Dropout Voltage  
Radio Control Systems  
Portable/Palm Top/Notebook Computers  
Portable Consumer Equipment  
Portable Instrumentation  
Automotive Electronics  
SMPS Post-Regulator  
Extremely Tight Load And Line Regulation  
Very Low Temperature Coefficient  
Current & Thermal Limiting  
Error Flag Warns Of Output Dropout  
Logic-Controlled Electronic Shutdown  
Output Programmable From 1.24V to 29V  
Voltage Reference  
PRODUCT DESCRIPTION  
The AS2955/56/57 is a low power voltage regulator. This device is an excellent choice for use in battery-powered applications such as  
cordless telephones, radio control systems, and portable computers. The AS2955/56/57 features very low quiescent current (100µA  
Typ.) and very low dropout voltage. This includes a tight initial tolerance of 1% max and 2% max., and very low output temperature  
coefficient, making the AS2955/56/57 useful as a low-power voltage reference.  
The error flag output feature is used as power-on reset for warning of a low output voltage, due to a falling voltage input of batteries.  
Another feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. The AS2955/56/57 is  
offered in 3-pin and 5-pin TO-220 package compatible with other 5 volt and adjustable regulators, in 8-Pin Plastic Dip SO-8 (same pin  
out as AS2951) and surface mount TO-263 packages.  
The regulator output voltage (of the 8-pin package and 5-pin TO-220 & TO-263) may be pin-strapped for a 5V and 3.3V or  
programmed from 1.24V to 29V with an external pair of resistors. Look for AS2951 for 150mA and AS2954 for 250mA applications.  
ORDERING INFORMATION  
TO-263-3 Package  
AS2955  
TO-220  
TO-263  
PLASTIC  
SOIC  
OPER.  
TEMP.  
RANGE  
3 / 5- PIN  
3 / 5-PIN  
3
2
1
VOUT  
GND  
8-PIN  
AS2955/56/57YU-X  
AS2955/56/57YT-X  
AS2955YS-X  
-40 C to +125 C  
°
°
Y= Output Tolerance(A = 1%; Blank for 2%)  
Consult factory for other fixed voltages.  
X= Output Voltage(3.3V, 5.0V or Blank for Adj)  
V IN  
TO-220-5 Package  
Front View  
TO-263-5 Package  
8-Pin Surface Mount  
1
2
8
7
OUTPUT  
SENSE  
INPUT  
TO-220-3 Package  
AS2956/57  
AS2956/57  
Five Lead Package Pin Functions:  
FEEDBACK  
AS2955  
AS2956  
ERROR  
INPUT  
AS2957  
ADJUST  
SHUTDOWN  
GND  
3
2
1
VOUT  
GND  
VIN  
3
4
SHUTDOWN  
6
5
1)  
2)  
3)  
4)  
5)  
5V/ 3.3V TAP  
ERROR  
AS2955  
GROUND  
GND  
OUTPUT  
INPUT  
Front View  
Top View  
1
2 3 4  
5
SHUTDOWN OUTPUT  
1 2 3 4 5  
Top View  
Top View  
Rev. 10/6/00  

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