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參數資料
| 型號： | AMS2942BS |
| 廠商： | Advanced Monolithic Systems, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| 中文描述： | 無電容，NMOS管，150mA的低壓差穩壓器的反向電流保護 |
| 文件頁數： | 1/7頁 |
| 文件大?。?/td> | 68K |
| 代理商： | AMS2942BS |
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced
AMS2942
Monolithic
HIGH VOLTAGE LOW DROPOUT REGULATOR
Systems
FEATURES
Adjustable from 1.23V to 42V
High Accuracy Output Voltage
Extremely Low Quiescent Current
Low Dropout Voltage
Tight Load and Line Regulation
Low Temperature Coefficient
Current and Thermal Protection
Unregulated DC Positive Transients 60V
Error Flag Warning of Voltage Output Dropout
Logic Controlled Electronic Shutdown
APPLICATIONS
Telephone Systems
High Voltage Power Supply
Cordless Telephones
Laboratory Instrumentation
Radio Control Systems
Automotive Electronics
Avionics
GENERAL DESCRIPTION
The AMS2942 are micropower voltage regulators ideally suited for use with high voltage powered systems. This device
feature very low quiescent current (typ.130μA), and very low dropout voltage (typ.45mV at light loads and 380mV at
100mA). The quiescent current increases only slightly in dropout. The AMS2942 has positive transient protection up to 60V
and can survive unregulated input transient up to 20V below ground.
AMS2942 is designed with a tight initial voltage reference tolerance, 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 regulator in telephone
applications, using the telephone line as a power source.
The AMS2942 is available in a special 8-pin plastic SOIC in which pin 2 and 3 are fused together with the package paddle
serving also as heat sink. An error flag output warns of a low output voltage, often due to failing voltage on input line. A
logic-compatible shutdown input is available, which enables the regulator to be switched on and off. The output voltage can
be programmed from 1.23V to 42V with an external pair of resistors.
ORDERING INFORMATION
PIN CONNECTION
PACKAGE TYPE
8 LEAD SOIC
AMS2942AS
AMS2942BS
OPERATING
TEMP. RANGE
IND
IND
8L SOIC
1
2
8
4
7
5
6
N/C
ERROR
FEEDBACK
OUTPUT
INPUT
GROUND
3
ON/OFF
GROUND
Top View
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