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參數(shù)資料
| 型號： | AS2954N-5.0 |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 182K |
| 代理商： | AS2954N-5.0 |
Rev.9/29/00
AS2954
250 mA Low Drop Out Voltage Regulator
FEATURES
Output Accuracy 5V, 3.3V,@ 250mA Output
Very Low Quiescent Current
Low Dropout Voltage
Extremely Tight Load And Line Regulation
Very Low Temperature Coefficient
Current & Thermal Limiting
Improved Replacement With Hight I
OUT
For LP2954 Sockets
AS2954 Version Over LP2954
Error Flag Warns Of Output Dropout
Logic-Controlled Electronic Shutdown
Output Programmable From 1.24V to 29V
Input Can Withstand -20V Reverse Battery & +60 Positive Transient
PRODUCT DESCRIPTION
The AS2954 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 AS2954 features very low quiescent current (75
μ
A Typ.) and
very low dropout voltage. This includes a tight initial tolerance of
±
0.5% max and
±
1% max., and very low output temperature
coefficient, making the AS2954 useful as a low-power voltage reference. The key AS2954 features include protection against reversed
battery, fold-back current limiting, and automotive load dump protection (60V positive transient).
The error flag output feature is used as power-on reset for warning of a low output voltage, due to falling voltage input of batteries.
Another feature is the logic compatible shutdown input which enables the regulator to be switched on and off. The AS2954 is offered
in a 3-pin TO-92and TO-263 package compatible with other 5 volt regulators, in 8-Pin plastic, SO-8, (same pin out as AS2951), TO-
220 and TO-263.
The regulator output voltage (of the 8-pin) may be pin-strapped for a 5Vand 3.3V or programmed from 1.24V to 29V with an external
pair of resistors. Look for AS2951 for 150mA and LP2951 for 100mA applications.
TO-263-5 Package
TO-263-3 Package
8-Pin Surface Mount (S)
APPLICATIONS
Battery Powered Systems
Cordless Telephones
Radio Control Systems
Portable/Palm Top/Notebook Computers
Portable Consumer Equipment
Portable Instrumentation
Automotive Electronics
SMPS Post-Regulator
Voltage Reference
Avionics
TO-220-5 Package
Front View
AS2954
GND
SHUTDOWN
ERROR
1)
3)
4)
5)
2) OUTPUT
INPUT
1 2 3 4 5
Front View
TO-220-3 Package
AS2954
1
2
3
V
OUT
V
IN
GND
Top View
4 5
AS2954
V
IN
V
OUT
V
ADJ
GND
SHUTDOWN
ERROR
1)
2) OUTPUT
3)
4)
5)
INPUT
AS2954
Top View
1
2
3
3
2
1
Bottom View
1
3
2
OUTPUT
GND
INPUT
TO-92 (N)
Top View
2
1
3
4
8
7
6
5
AS2954
SHUTDOWN
GND
INPUT
5V, 3.3V TAP
ERROR
FEEDBACK
SENSE
OUTPUT
AS2954
1
3
2
V
OUT
GND
SOT-223 Package
Front View
V
IN
PIN CONNECTIONS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS2954S-3.3 | Analog IC |
| AS2954S-5.0 | Analog IC |
| AS2954T | Positive Adjustable Voltage Regulator |
| AS2954T3-3.3 | Analog IC |
| AS2954T3-5.0 | Analog IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS2954S-3.3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| AS2954S-5.0 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| AS2954T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Adjustable Voltage Regulator |
| AS2954T3-3.3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| AS2954T3-5.0 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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