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PDF AIC1722-33CZT Data sheet ( Hoja de datos )
| Número de pieza | AIC1722-33CZT | |
| Descripción | 300mA Low Dropout Linear Regulator | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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AIC1722
300mA Low Dropout Linear Regulator
FEATURES
Low Dropout Voltage of 130mV at 100mA
Output Current (5.2V Output Version).
Guaranteed 300mA Output Current.
Internal 1.3Ω P-MOSFET Draws no Base
Current.
Low Ground Current at 55µA.
2% Accuracy Output Voltage of 3.3V/ 3.5V/
3.7V/ 3.8V/ 5.0V/ 5.2V.
Input Voltage Range up to 12V.
Needs only 1µF for Stability.
Current and Thermal Limiting.
APPLICATIONS
Voltage Regulator for CD-ROM Drivers.
Voltage Regulator for LAN Cards.
Voltage Regulator for Microprocessor.
Wireless Communication Systems.
Battery Powered Systems.
TYPICAL APPLICATION CIRCUIT
VIN
VIN
AIC1722
VOUT
VOUT
+ 1µF
CIN
GND
+ 10µF
COUT
Low Dropout Linear Regulator
DESCRIPTION
The AIC1722 is a 3-pin low dropout linear
regulator. The superior characteristics of the
AIC1722 include zero base current loss, very
low dropout voltage, and 2% accuracy output
voltage. Typical ground current remains
approximately 55µA, from no load to maximum
loading conditions. Dropout voltage at 100mA
output current is exceptionally low: 130mV for
the AIC1722-50 and AIC1722-52, 180mV for
the AIC1722-33, AIC1722-35, and AIC1722-37
AIC1722-38. Output current limiting and thermal
limiting are built in to provide maximal
protection to the AIC1722 against fault
conditions.
The AIC1722 comes in the popular 3-pin
SOT-89 and TO-92 packages.
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-1722-01
TEL: 886-3-5772500 FAX: 886-3-5772510
www.analog.com.tw
1
1 page  
AIC1722
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Load Transient Response
100 COUT= 1µF
VOUT= 5.2V
0
-100
-200
150
0.1
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Time (mS)
Recommended Max. Output Current v.s. Input Voltage
400
3.3V
3.7V
3.5V
3.8V
300
200
5.2V
5V
100
0
4 5 6 7 8 9 10 11 12
Input Voltage VIN (V)
BLOCK DIAGRAM
VIN
CURRENT
LIMITING
-
ERROR
AMP
+
THERMAL
SHUTDOW N
1.235V
- Reference
VOUT
GND
PIN DESCRIPTION
VOUT PIN - Output pin.
GND PIN - Power GND.
VIN PIN - Power Supply Input.
APPLICATION INFORMATIONS
A 1µF (or greater) capacitor is required between
the AIC1722 output and ground for stability.
Without this capacitor the part will oscillate. Even
though most types of capacitor may work, the
equivalent series resistance (ESR) should be held
to 5Ω or less if Aluminum electrolytic type is used.
Many Aluminum electrolytics have electrolytes
that freeze at about -30°C, so solid tantalums are
recommended for operation below -25°C. The
value of this capacitor may be increased without
limit.
A 0.1µF capacitor (or greater) should be placed
from the AIC1722 input to ground if the lead
inductance between the input and power source
exceeds 500nH (approximately 10 inches of trace).
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet AIC1722-33CZT.PDF ] | |
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