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PDF AIC2951D-30CS Data sheet ( Hoja de datos )
| Número de pieza | AIC2951D-30CS | |
| Descripción | Low Dropout Linear Regulator | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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AIC2951/2951D
Low Dropout Linear Regulator
n FEATURES
n DESCRIPTION
l Low Dropout Voltage of 130mV at 100mA Output
Current (AIC2951/2951D-50).
l Guaranteed 150mA /300mA Output Current.
l Internal 1.3Ω P-MOSFET Draws no Base Current.
l Low Ground Current at 55µA.
l 1% Accuracy Output of 3V/3.3V/5V.
l Error Flag Warns of Output Dropout.
l 1µA Supply Current in Shutdown Mode.
l Output Programmable from 1.235V~11V.
l Fast Transient Response.
l Needs only 1µF for Stability.
l Current and Thermal Limiting.
n APPLICATIONS
l Voltage Regulator for Pentium® CPUs.
l Wireless Communication System.
l Battery Powered Systems.
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 55µA, 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 TYPICAL APPLICATION CIRCUIT
VOUT=1.235(1+R1/R2)
1
VOUT
8
VIN
2
R4 SENSE
7
FB
33 3
SHDN
6
TAP
45
GND ERROR
AIC2951
R3
C1
+
470µF
VIN
390
Q1
D45H2A
VOUT
R1
C2
R2
+
1000µF
Pentium Processor Power Supply
Analog Integrations Corporation
www.analog.com.tw
DS-2951-01 Mar 13, 00
TEL: 886-3-5772500
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
FAX: 886-3-5772510
1
1 page  
AIC2951/2951D
n TYPICAL PERFORMANCE CHARACTERISTICS
Reference Voltage vs Temperature
1.28
Ground Current vs. Input Voltage
60
1.26
VREF=1.244V
1.24
1.22 VREF=1.235V
VREF=1.225V
1.2
50
40
30
20
10
1.18
-50
-25
0 25 50 75
Temperature(°C)
100 125
0
01 23 45 67
Input Voltage (V)
8
Ground Current vs. Temperature
60
58
56 IL=300mA
IL=150mA
54
52 IL=0.1mA
50
-50 -25 0
25 50 75 100 125
Temperature(° C)
Dropout Voltage vs Temperature
600
500 VOUT=5V
400
IL=300mA
300
IL=150mA
200
100
0
-50
-25
IL=0.1mA
0 25 50 75
Temperature( °C)
100
125
600
500
400
300
200
100
0
0
Dropout Voltage vs Load Current
VOUT=3V
VOUT=3.3V
VOUT =5V
50 100 150
200
Load Current (mA)
250 300
Short Circuit Current vs. Temperature
500
AIC2951D
400
300
200
-50
-25
AIC2951
0 25 50 75
Temperature (°C)
100 125
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AIC2951D-30CS.PDF ] | |
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