AIC AIC1084-33CT, AIC1084-33CMA, AIC1084-33CM, AIC1084-33CE, AIC1084-18CT Datasheet
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AIC1084
1%
1%
213
5A Low Dropout Positive Adjustable Regulator
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 TYPICAL APPLICATION CIRCUIT
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.
V
IN
5V
C1
10µF
AIC1084
ADJ
1
Adjustable Voltage Regulator
V
5V
IN
+
C1
10µF
AIC1084-33
GND
Fixed Voltage Regulator
23
V
RF2
205
REF
V
OUT
3.3V
RF1
Ω
125
++
C2
Ω
10µF
+
C2
10µF
V
OUT
3.3V
V
REF=VOUT
V
OUT=VREF
I
ADJ
(1) C1 needed if device is far away from filter
(2) C2 required for stability.
- V
ADJ
x (1+RF2/RF1)+ I
=55µA (typ.)
capacitors.
=1.25V (typ.)
ADJ
x RF2
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 ORDERING INFORMATION
231
AIC108
4-XXCX
AIC1084
PACKAGING TYPE
E: TO-252
M: TO-263
T: TO-220
MA: TO-263AA
OUTPUT VOLTAGE
DEFAULT: ADJ.
15: 1.5V
18: 1.8V
33: 3.3V
ORDER NUMBER
AIC1084CE
(TO-252)
AIC1084CM
(TO-263)
AIC1084CMA
(TO-263AA)
AIC1084CT
(TO-220)
PIN CONFIGURATION
FRONT VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
FRONT VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
FRONT VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
FRONT VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
2 31
2 31
1 2 3
n ABSOLUTE MAXIMUM RATINGS
VIN pin to ADJ/GND pin ......................……...............……….......................… ........... 7V
Operating Junction Temperature Range ..................……………...................... 0°C~ 125°C
Storage Temperature Range ...............................……….……................. - 65°C ~ 150°C
Thermal Resistance Junction to Case TO-252 ………………………………… 15°C/W
TO-263, TO263AA, TO-220.....……….... 6°C /W
Thermal Resistance Junction to Ambient TO-252 …………………………..… 100°C/W
(Assume no ambient airflow, no heatsink) TO-263 ….....…….....……………... 60°C /W
TO-263AA …..……..…….....……... 60°C /W
TO-220 …....……....……………….. 50°C /W
Lead Temperature (Soldering) 10 sec. .....................………..…............……..….......260°C
2
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