AIC1741 Datasheet, PDF (1/6 Pages) Analog Intergrations Corporation – LOW DROPOUT ADJUSTABLE REGULATOR

FEATURES
1% Accuracy 1.235V Voltage Reference.
Fast Transient Response.
Low Ground Current at 55µA.
Wide Output Current Range, 10µA~80mA.
Output Programmable from 1.235V~11V.
Low Temperature Coefficiency.
Error Flag Warns of Output Dropout.
APPLICATIONS
Voltage Regulator for Pentium^® CPUs.
Wireless Communication System.
5V to 3.3V Regulator for VGA Cards.
Battery Powered Systems.
TYPICAL APPLICATION CIRCUIT
AIC1741
LOW DROPOUT ADJUSTABLE REGULATOR
SPEC NO: DS-1741-00
DESCRIPTION
The AIC1741 is a low power precision adjustable
regulator with 80mA output capability. The device
can be used as a secondary regular to provide
feedback in a switching power supply.
The AIC1741 circuitry includes an internal wide
band amplifier, a precision bandgap reference,
and a PMOS output transistor. The feedback
input can be connected to an external resistor
divider to program the sensed output voltage.
The VOUT pin provides loop frequency
compensation when used as a part of a larger
servo system.
Although the device works as a stand-alone
regulator, it can also drive an NPN power
transistor to construct a high current low dropout
regulator, with only very minor current loss to
ground.
V_IN
5V
Q1
TIP31C
V_OUT
3.3V/3 A
C3 ⁺
R3
2K
10µF
1 _VOUT
2 _NC
+
R1 C2
3 _GND
390 _33µF 4 _NC
8
VIN
FB ⁷
FLAG 6
NC ⁵
AIC1741
R2
1.2K
+ ^C1
10µF
5V to 3.3V Regulator for VGA Cards.
ORDERING INFORMATION
AIC1741 XX
PACKAGE TYPE
N: PLASTIC DIP
S: SMALL OUTLINE
ORDER NUMBER
AIC1741CN
(PLASTIC DIP)
TEMPERATURE RANGE
C: 0°C~+70°C
AIC1741CS
(PLASTIC SO)
PIN CONFIGURATION
TOP VIEW
VOUT ₁
NC 2
GND ₃
NC ₄
8 ^VIN
7 ^FB
6 ^FLAG
5 ^NC
Pentium^® is a registered trademark of Intel Corporation
ANALOG INTEGRATIONS CORPORATION
www.analog.com.tw
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. TEL: [phone] FAX:[phone]
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