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PDF AIC1740-20CE Data sheet ( Hoja de datos )
| Número de pieza | AIC1740-20CE | |
| Descripción | Low Output Voltage/ 500mA Low Dropout Linear Regulator | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AIC1740-20CE (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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AIC1740
Low Output Voltage, 500mA Low Dropout
Linear Regulator
n FEATURES
l Low Dropout Voltage of 900mV at 500mA
Output Current (3.0V Output Version).
l Guaranteed 500mA Output Current.
l Internal 1.5Ω P-MOSFET Draws no Base
Current.
l Low Ground Current at 65µA.
l 2% Accuracy Output Voltage of 1.8V/ 2.0V/
2.5V/ 2.7V/ 3.0V.
l Input Voltage Range up to 12V.
l Needs only 4.7µF for Stability.
l Current and Thermal Limiting.
n APPLICATIONS
l Voltage Regulator for CD-ROM Drivers.
l Voltage Regulator for LAN Cards.
l Voltage Regulator for Monitor Microprocessor.
l Voltage Regulator for RAM Module.
l Wireless Communication Systems.
l Battery Powered Systems.
n DESCRIPTION
The AIC1740 is a 3-pin low dropout linear
regulator. The superior characteristics of the
AIC1740 include zero base current loss, very
low dropout voltage, and 2% accuracy output
voltage. Typical ground current remains
approximately
65µA, from no load to maximum loading
conditions. Dropout voltage is exceptionally low.
Output current limiting and thermal limiting are
built in to provide maximal protection to the
AIC1740 against fault conditions.
The AIC1740 comes in the popular SOT-223,
TO-251 and TO-252 packages.
n TYPICAL APPLICATION CIRCUIT
VIN
VI N
AIC1740
VOUT
VOUT
+ 1µF
CI N
GND
+ 10µF
COUT
Low Dropout Linear Regulator
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-1740-00 Aug 2, 00
TEL: 886-3-5772500 FAX: 886-3-5772510
www.analog.com.tw
2
1 page  
n BLOCK DIAGRAM
VIN
CURRENT
LIMITING
-
ERROR
AMP
THERMAL
+ SHUTDOWN
+ 1.235V
- Reference
n PIN DESCRIPTION
VOUT PIN - Output pin.
GND PIN - Power GND.
VIN PIN - Power Supply Input.
n APPLICATION INFORMATIONS
A 4.7µF (or greater) capacitor is required between
the AIC1740 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
AIC1740
VOUT
GND
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 AIC1740 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 7 Páginas | |
| PDF Descargar | [ Datasheet AIC1740-20CE.PDF ] | |
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