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參數(shù)資料
| 型號(hào)： | AMS2951CS-30 |
| 廠商： | Advanced Monolithic Systems, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 150mA LOW DROPOUT VOLTAGE REGULATOR |
| 中文描述： | 150mA的低壓差穩(wěn)壓器 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大小： | 144K |
| 代理商： | AMS2951CS-30 |
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced
AMS2950/AMS2951
Monolithic
150mA LOW DROPOUT VOLTAGE REGULATOR
Systems
FEATURES
5.0V, 3.3V, 3.0V and 2.5V 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 (AMS2951 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 AMS2950 and AMS2951 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.45mV at light loads and 380mV at
150mA) thus prolonging battery life. The quiescent current increases only slightly in dropout. The AMS2950/AMS2951 has
positive transient protection up to 60V and can survive unregulated input transient up to 20V below ground.
The AMS2950 and AMS2951 were 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 AMS2950 is offered in the 3-pin TO-92 package. AMS2951 is available in 8-pin plastic SOIC and DIP packages and
offers three major additional system features. An error flag output warns of a low output voltage, often due to failing batteries
on input. The AMS2951 also features the logic-compatible shutdown input which enables the regulator to be switched on and
off. The AMS2951 device may be pin-strapped for a 5.0V, 3.3V, 3.0V or 2.5 output, or programmed from 1.24V to 29V with
an external pair of resistors.
ORDERING INFORMATION
PIN CONNECTION
PACKAGE TYPE
8 LEAD PDIP
OPERATING
TEMP. RANGE
IND.
IND
TO-92
8 LEAD SOIC
AMS2950ACN-X AMS2951ACP- AMS2951ACS-X
AMS2950CN-X AMS2951CP-X AMS2951CS-X
X = 3.3V, 3.0V, 2.5V
8L SOIC/ 8L PDIP
1
2
8
4
3
7
5
6 V
TAP
ERROR
FEEDBACK
OUTPUT
SENSE
SHUTDOWN
INPUT
GROUND
Top View
TO-92
OUTPUT
INPUT
GND
Bottom View
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