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AIC1085 Fiches technique(PDF) 1 Page - Analog Intergrations Corporation

No de pièce AIC1085
Description  3A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
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Fabricant  AIC [Analog Intergrations Corporation]
Site Internet  http://www.analog.com.tw
Logo AIC - Analog Intergrations Corporation

AIC1085 Fiches technique(HTML) 1 Page - Analog Intergrations Corporation

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AIC1085
3A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
SPEC NO: DS-1085-01 FEB 02, 01
ANALOG INTEGRATIONS CORPORATION
www.analog.com.tw
4F, 9 Industry E. 9th Road, Science-based IndustrialPark,Hsinchu,Taiwan, R.O.C.
TEL: (8863)577-2500
FAX:(8863)577-2510
1
n FEATURES
l
Dropout Voltage 1.3V at 3A Output Current.
l
Fast Transient Response.
l
Extremely Tight Line and Load Regulation.
l
Internal Thermal and Current Limiting.
l
Adjustable Output Voltage or Fixed 1.5V, 1.8V,
3.3V.
l
Standard 3-Pin Power Packages.
n APPLICATIONS
l
Mother Board I/O Power Supplies.
l
Microprocessor Power Supplies.
l
High Current Regulator.
l
Post Regulator for Switching Supply.
n DESCRIPTION
The AIC1085 is a
low dropout three terminal
regulator with 3A output current capability. The
output voltage is adjustable with the use of a resistor
divider or fixed 1.5V, 1.8V, and 3.3V. Dropout is
guaranteed at a maximum of 1.4V at maximum
output current. Its low dropout voltage and fast
transient response make it ideal for low voltage
microprocessor applications. Internal current and
thermal limiting provides protection against any
overload condition that would create excessive
junction temperatures.
n TYPICAL APPLICATION CIRCUIT
C2
10µF
VOUT
3.3V
VIN
5V
+
+
VREF
RF2
205Ω
1%
ADJ
AIC1085
C1
10µF
2
3
1
RF1
125Ω
1%
V
REF=VOUT - VADJ =1.25V (typ.)
V
OUT =VREF x (1+RF2/RF1)+ IADJ x RF2
I
ADJ =55µA (typ.)
(1)
C1 needed if device is far away from
filter capacitors.
(2)
C2 required for stability.
Adjustable Voltage Regulator
C2
10µF
VOUT
3.3V
VIN
5V
+
+
GND
C1
10µF
AIC1085-33
2
1
3
Fixed Voltage Regulator


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