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參數資料
| 型號： | AMS2954C-X |
| 廠商： | Advanced Monolithic Systems, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 250mA LOW DROPOUT VOLTAGE REGULATOR |
| 中文描述： | 250mA的低壓差穩壓器 |
| 文件頁數： | 1/15頁 |
| 文件大?。?/td> | 169K |
| 代理商： | AMS2954C-X |
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced
AMS2954
Monolithic
250mA LOW DROPOUT VOLTAGE REGULATOR
Systems
FEATURES
2.5V, 3.0V, 3.3V and 5.0V Versions
High Accuracy Output Voltage
Extremely Low Quiescent Current
Low Dropout Voltage
Extremely Tight Load and Line Regulation
Very Low Temperature Coefficient
Current and Thermal Limiting
Needs Minimum Capacitance (1
μ
F) for Stability
Unregulated DC Positive Transients 60V
ADDITIONAL FEATURES (ADJ ONLY)
1.24V to 29V Programmable Output
Error Flag Warning of Voltage Output Dropout
Logic Controlled Electronic Shutdown
APPLICATIONS
Battery Powered Systems
Portable Consumer Equipment
Cordless Telephones
Portable (Notebook) Computers
Portable Instrumentation
Radio Control Systems
Automotive Electronics
Avionics
Low-Power Voltage Reference
GENERAL DESCRIPTION
The AMS2954 series are micropower voltage regulators ideally suited for use in battery-powered systems. These devices
feature very low quiescent current (typ.75μA), and very low dropout voltage (typ.50mV at light loads and 380mV at 250mA)
thus prolonging battery life. The quiescent current increases only slightly in dropout. The AMS2954 has positive transient
protection up to 60V and can survive unregulated input transient up to 20V below ground. The AMS2954 was designed to
include a tight initial tolerance (typ. 0.5%), excellent load and line regulation (typ. 0.05%), and a very low output voltage
temperature coefficient, making these devices useful as a low-power voltage reference.
The AMS2954 is available in the 3L TO-220 package, 3L TO-263, SOT-223, TO-252 and in 8-pin plastic SOIC and DIP
packages. In the 8L SOIC and PDIP packages the following additional features are offered: an error flag output warns of a low
output voltage, often due to failing batteries on input; the logic-compatible shutdown input enables the regulator to be switched
on and off; the device may be pin-strapped for a, 2.5, 3.0V, 3.3V or 5V output, or programmed from 1.24V to 29V with an
external pair of resistors.
ORDERING INFORMATION
PACKAGE TYPE
TO-252
OPERATING
TEMP. RANGE
IND.
IND
3 LEAD TO-220
AMS2954ACT-X AMS2954ACM-X AMS2954ACD-X AMS2954AC-X AMS2954ACS-X AMS2954CP-X
AMS2954CT-X
AMS2954CM-X
AMS2954CD-X
X = 2.5V, 3.0V, 3.3V, 5.0V
SOT-223 TOP VIEW
3 LEAD TO-263
SOT-223
8 LEAD SOIC
8 LEAD PDIP
AMS2954C-X
AMS2954CS-X
AMS2954CP-X
PIN CONNECTIONS
8L SOIC/ 8L PDIP
1
2
8
4
3
7
5
6 V
TAP
ERROR
FEEDBACK
OUTPUT
SENSE
SHUTDOWN
INPUT
GROUND
Top View
TAB IS
GND
TO-252 FRONT VIEW
1
2
3
1
2
3
TAB IS
GND
1
2
3
TAB IS
GND
3L TO-263 FRONT VIEW
OUTPUT
INPUT
OUTPUT
OUTPUT
INPUT
INPUT
3L TO-220 FRONT VIEW
INPUT GND
OUTPUT
GND
GND
1
2
3
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| AMS2954CS-33 | 250mA LOW DROPOUT VOLTAGE REGULATOR |
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