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AIC1084 Fiches technique(PDF) 1 Page - Analog Intergrations Corporation

No de pièce AIC1084
Description  5A Low Dropout Positive Adjustable Regulator
Download  6 Pages
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Fabricant  AIC [Analog Intergrations Corporation]
Site Internet  http://www.analog.com.tw
Logo AIC - Analog Intergrations Corporation

AIC1084 Fiches technique(HTML) 1 Page - Analog Intergrations Corporation

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AIC1084
5A Low Dropout Positive Adjustable Regulator
Analog Integrations Corporation
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
www.analog.com.tw
DS-1084-03
Sep 21, 01
TEL: 886-3-5772500
FAX: 886-3-5772510
1
n FEATURES
l
Dropout Voltage 1.3V at 5A
Output Current.
l
Fast Transient Response.
l
Extremely Tight Line and Load Regulation.
l
Current Limiting and Thermal Protection.
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 AIC1084 is a low dropout three terminal
regulator with 5A output current capability. The
output voltage is adjustable with the use of a
resistor divider or fixed 3.3V. Dropout voltage is
guaranteed to be at maximum of 1.4V with the
maximum output current. Its low dropout voltage
and fast transient response make it ideal for low
voltage microprocessor applications. Current limit
and thermal protection provide 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
AIC1084
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
AIC1084-33
2
1
3
Fixed Voltage Regulator


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