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AIC1085-33CT Schematic ( PDF Datasheet ) - Analog Intergrations Corporation

Teilenummer AIC1085-33CT
Beschreibung 3A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
Hersteller Analog Intergrations Corporation
Logo Analog Intergrations Corporation Logo 




Gesamt 7 Seiten
AIC1085-33CT Datasheet, Funktion
AIC1085
3A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
SPEC NO: DS-1085-01 FEB 02, 01
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
VIN 3 AIC1085 2
5V
VOUT
3.3V
C1 +
10µF
1 ADJ
VREF RF1
125
1% +
C2
RF2
205
10µF
1%
Adjustable Voltage Regulator
VREF=VOUT - VADJ=1.25V (typ.)
VOUT=VREF x (1+RF2/RF1)+ IADJ x RF2
IADJ=55µA (typ.)
(1) C1 needed if device is far away from
filter capacitors.
(2) C2 required for stability.
VIN 3
5V
C1 +
10µF
AIC1085-33 2
1
GND
VOUT
3.3V
+
C2
10µF
Fixed Voltage Regulator
ANALOG INTEGRATIONS CORPORATION
4F,9IndustryE.9thRoad,Science-basedIndustrialPark,Hsinchu,Taiwan, R.O.C.
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
1






AIC1085-33CT Datasheet, Funktion
AIC1085
n PHYSICAL DIMENSIONS
3A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
SPEC NO: DS-1085-01 FEB 02, 01
l TO-220 (unit: mm)
E
D
L
e1
e
A
F
J1
e2
SYMBOL
A
D
E
e
e1
e2
F
J1
L
MIN
3.56
14.23
9.66
2.29
0.50
-
0.51
2.04
12.70
MAX
4.82
16.51
10.66
2.79
1.15
1.10
1.39
2.92
14.73
l TO-252 (unit: mm)
E
b2
C1
A
DH
e
b
L
A1
SYMBOL
A
A1
b
b2
C1
D
E
e
H
L
MIN MAX
2.19
2.38
1.02
1.27
0.64
0.88
5.21
5.46
0.46
0.58
5.33
5.59
6.35
6.73
2.28 (TYP.)
9.40
10.42
0.51
-
ANALOG INTEGRATIONS CORPORATION
4F,9IndustryE.9thRoad,Science-basedIndustrialPark,Hsinchu,Taiwan, R.O.C.
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
6

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