AIC1117
800mA 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-1117-00 Mar 13, 00
TEL: 886-3-5772500 FAX: 886-3-5772510
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FEATURES
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Dropout Voltage 1.2V at 800mA Output Current.
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Fast Transient Response.
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Line Regulation typically at 0.015%.
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Load Regulation typically at 0.1%.
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Internal Thermal and Current Limiting.
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Adjustable Output Voltage or Fixed 2.85V, 3.3V,
5V.
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Standard 3-Pin Power Packages.
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APPLICATIONS
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SCSI-2 Active Terminator.
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Post Regulator for Switching Supply.
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Battery Chargers.
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Constant-Current Regulators.
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PC Add-On Card.
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DESCRIPTION
The AIC1117 is a low dropout three terminal
regulator with 800mA output current capability.
The output voltage is adjustable with the use
of a resistor divider. For fixed output voltage
versions, the output voltage is internally set at
2.85V, 3.3V or 5V. Dropout is guaranteed at a
maximum of 1.3V 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.
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TYPICAL APPLICATION CIRCUIT
C2
10
F
V
OUT
3.3V
V
IN
5V
+
+
V
REF
RF2
205
1%
ADJ
AIC1117
C1
10
F
2
3
1
RF1
125
1%
V
REF
=V
OUT
- V
ADJ
=1.25V (typ.)
V
OUT
=V
REF
x (1+RF2/RF1)+ I
ADJ
x RF2
I
ADJ
=55
A (typ.)
(1) C1 needed if device is far away from filter
capacitors.
(2) C2 required for stability.
Adjustable Voltage Regulator
C2
10
F
V
OUT
V
IN
5V
+
+
GND
C1
10
F
AIC1117-28
AIC1117-33
AIC1117-50
2
1
3
Fixed Voltage Regulator
AIC1117
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ORDERING INFORMATION
ORDER NUMBER
PIN CONFIGURATION
FRONT VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
AIC1 117-XXXX
AIC1117CE
(TO-2 52)
PACKAGING TYPE
E: TO-252
M: TO-263
T: TO-220
Y: SOT-223
TEMPERATURE RANGE
C: 0
C~+70
C
OUTPUT VOLTAGE
DEFAULT: ADJ.
28: 2.85V
33: 3.3V
50: 5.0V
2
3
1
1
2
3
FRONT VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
FRONT VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
AIC1117CT
(TO-220)
AIC1117CY
(SOT-223)
2
3
1
2
3
1
FRONT VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
AIC1 117CM
(TO-263)
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ABSOLUTE MAXIMUM RATINS
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-220 ... ... ... ........... ... ...... ... ... ... ... 3
C /W
TO-252 ... ....... ... ....... ... ... ... ... ... ..12.5
C /W
SOT-223
... ....... ... ..... ... ... ..... ... ... ..15
C /W
Lead Temperature (Soldering) 10 sec.
........................ ... ... ............... ... ... ...... .......260
C
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TEST CIRCUIT
Refer to TYPICAL APPLICATION CIRCUIT.
AIC1117
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TYPICAL PERFORMANCE CHARACTERISTICS
Load Current
Load Transient Response
Time (
S)
0
40
80
120
160
200
0.1A
0.4A
-0.1
-0.05
0
0.05
0.1
Output Voltage
(V, AC)
V
IN
=5V
C
IN
=1
F
C
OUT
=10
F (Tantalum)
V
OUT
=3.3V
Line Transient Response
Time (
S)
Output Voltage
(
mV, AC)
Input Voltage (V)
0
10
20
30
40
50
6.0
7.0
--100
--50
0
50
C
OUT
=10
F (Tantalum)
V
OUT
=3.3V
Dropout Voltage (VOUT=3.3V)
Output Current (mA)
Minimum Differential Voltage (V)
300
400
500
600
700
800
900
1.14
1.15
1.16
1.17
1.18
1.19
0
100
200
Minimum Operating Current
Differential Voltage (V)
Minimum Operating Current (
mA)
0
1
2
3
4
5
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
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