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參數(shù)資料
| 型號： | AIC2951D-50CS |
| 廠商： | Analog Integrations Corporation |
| 英文描述： | CABLE 18/2 STR BC CMR GRY |
| 中文描述： | 低壓差線性穩(wěn)壓器 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 153K |
| 代理商： | AIC2951D-50CS |
AIC2951/2951D
Low Dropout Linear Regulator
Analog Integrations Corporation
www.analog.com.tw
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-2951-01 Mar 13, 00
TEL: 886-3-5772500
FAX: 886-3-5772510
1
n
F E ATUR E S
l
Low Dropout Voltage of 130mV at 100mA Output
Current (AIC2951/2951D-50).
l
Guaranteed 150mA /300mA Output Current.
l
Internal 1.3
P-MOSFET Draws no Base Current.
l
Low Ground Current at 55
μ
A.
l
1% Accuracy Output of 3V/3.3V/5V.
l
Error Flag Warns of Output Dropout.
l
1
μ
A Supply Current in Shutdown Mode.
l
Output Programmable from 1.235V~11V.
l
Fast Transient Response.
l
Needs only 1
μ
F for Stability.
l
Current and Thermal Limiting.
n
APPLICATIONS
l
Voltage Regulator for Pentium
CPUs.
l
Wireless Communication System.
l
Battery Powered Systems.
n
DE SCR IPTION
The AIC2951/ 2951D series is the enhanced
CMOS version of the LP2951. The superior char-
acteristics of the AIC2951/ 2951D series include
zero base current loss, very low dropout voltage,
and 1% accuracy output voltage. Typical ground
current remains approximately 55
μ
A, from no
load to maximum loading conditions. Dropout
voltage at 100mA output current is significantly
lower than its bipolar counterpart: 130mV for the
AIC2951-50/2951D-50, 180mV for the AIC2951-
33/ 2951D-33, and 200mV for the AIC2951-30/
2951D-30. Output current limiting and thermal
limiting are built in to provide maximal protection
to the AIC2951/2951D series from fault condi-
tions.
An error flag output, indicating when output volt-
age drops out of regulation, often due to the
falling batteries on the input, can be used for a
power-on reset. A logic-controlled shutdown
input enables the regulator to be switched on and
off. The part may be configured for a fixed output
voltage or programmed from 1.235V to 11V with
an external pair of resistors. The part comes in 8-
pin DIP or SO packages.
n
T YPICAL APPLICAT ION CIR CUIT
ERROR
C2
R2
R1
R3
390
R4
33
Q1
D45H2A
AIC2951
8
7
6
5
4
3
2
1
FB
GND
SENSE
SHDN
TAP
VIN
VOUT
V
IN
470
μ
F
V
OUT
1000
μ
F
V
OUT
=1.235(1+R1/R2)
+
C1
+
Pentium Processor Power Supply
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