AIC AIC1117A-33CM

AIC1117A
1A Low Dropout Positive Adjustable Regulator
n FEATURES
n DESCRIPTION
l
Dropout Voltage 1.3V at 1A Output Current.
The AIC1117A is a low dropout three terminal
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Fast Transient Response.
regulator with 1A output current capability. The
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Line Regulation typically at 0.015%.
output voltage is adjustable with the use of a
l
Load Regulation typically at 0.1%.
resistor divider or fixed 2.85V, 3.3V, 5V. Dropout
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Internal Thermal and Current Limiting.
is guaranteed at a maximum of 1.5V at
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Adjustable Output Voltage or Fixed 2.85V, 3.3V,
5V.
maximum output current. Its low dropout voltage
l
Standard 3-Pin Power Packages.
and fast transient response make it ideal for low
voltage microprocessor applications. Internal
n APPLICATIONS
current and thermal limiting provides protection
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Post Regulator for Switching Supply.
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Active SCSI Termination.
l
Battery Chargers.
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Constant-Current Regulators.
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Motherboard Clock Supplies.
against any overload condition that would create
excessive junction temperatures.
n TYPICAL APPLICATION CIRCUIT
3
VIN
5V
C1 +
10µF
AIC1117A
1 ADJ
VREF=VOUT - VADJ=1.25V (typ.)
2
VOUT
3.3V
RF1
125Ω
1%
+
C2
RF2
10µF
205Ω
1%
VREF
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.
Adjustable Voltage Regulator
VIN
5V
AIC1117A-33
C1 +
10µF
VOUT
3.3V
+
C2
10µF
GND
Fixed Voltage Regulator
Analog Integrations Corporation
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-1117A-00
TEL: 886-3-5772500
May 21, 01
FAX: 886-3-5772510
www.analog.com.tw
1
AIC1117A
n ORDERING INFORMATION
AIC1117A-XXCX
ORDER NUMBER
PACKAGING TYPE
E: TO-252
M: TO-263
T: TO-220
Y: SOT-223
DEFAULT:
28:
33:
50:
ADJ.
2.85V
3.3V
5.0V
AIC1117ACE
(TO-252)
PIN CONFIGURATION
FRONT VIEW
1: ADJ
2: VOUT (TAB)
3: VIN
AIC1117ACM
(TO-263)
AIC1117ACY
(SOT-223)
2
3
1
2
3
1
2
3
FRONT VIEW
1: ADJ
2: VOUT (TAB)
3: VIN
AIC1117ACT
(TO-220)
1
FRONT VIEW
1: ADJ
2: VOUT (TAB)
3: VIN
FRONT VIEW
1: ADJ
2: VOUT (TAB)
3: VIN
1
2
3
2
AIC1117A
n ABSOLUTE MAXIMUM RATINS
VIN pin to ADJ/GND pin
...........................… … .......… … .......… … … … … ...................... 7V
Operating Junction Temperature Range
..................… … … ...................... 0°C ~ 125°C
Power Dissipation … … … … … … … … … … … … … … … … … … … … … … … .Internally Limited
Thermal Resistance (Junction to Case)
TO-220 … … … ........… … ...… … … … ... 3°C /W
TO-263 … ....… … ....… … … … … … … … . 3°C /W
SOT-223
TO-252
… ....… … ..… … … ..… … … ..15°C /W
… … … … … … … … … … … ..12.5°C /W
Thermal Resistance (Junction to Ambient) TO-220
… ....… … ....… … … … … … … 50°C/W
(Assume no ambient airflow, no heatsink) TO-263
… .....… … .....… … … … … … ..60°C/W
Storage Temperature
Range
SOT-223
… … … … … … … … … … … ..155°C/W
TO-252
… … … … … … … … … … … ..100°C/W
...............................… … … … ................. - 65°C ~ 150°C
Lead Temperature (Soldering) 10 sec.
.....................… … … ............… … … ...… .......260°C
n ELECTRICAL CHARACTERISTICS
(VIN=5V, T J=25°C, IO=10mA, Unless otherwise
specified)
PARAMETER
Reference Voltage
TEST CONDITIONS
MIN.
TYP.
MAX.
TJ =25°C
1.238
1.25
1.262
0°C≤TJ ≤125°C
1.225
1.25
1.275
AIC1117A-28, VIN=5V
2.82
2.85
2.88
AIC1117A-33, VIN=5V
3.26
3.30
3.33
AIC1117A-50, VIN=7V
4.95
5.00
5.05
2.65V≤VIN≤7V
UNIT
V
10mA≤IO≤1A
Output Voltage
AIC1117A
V
0°C≤TJ ≤125°C
2.65V≤VIN≤7V
0.98V N
VN
1.02V N
TJ =25°C
0.015
0.2
0°C≤TJ ≤125°C
0.035
0.2
10mA≤IO≤1A
2.65≤VIN ≤7V
Line Regulation
%VOUT
3
AIC1117A
n ELECTRICAL CHARACTERISTICS
PARAMETER
Load Regulation
(Continued)
TEST CONDITIONS
MIN.
TYP.
MAX.
TJ =25°C, IO=10mA ~1A
0.1
0.3
0°C≤TJ ≤125°C
0.2
0.4
1.3
1.5
UNIT
%VOUT
∆VOUT, ∆VREF =1%
Dropout Voltage
IO=1A
V
0°C≤TJ ≤125°C
Current Limit
0°C≤TJ ≤125°C
1
A
2.65≤VIN ≤7V
Adjusted Pin Current (IADJ)
10mA≤IO≤1A
55
120
µA
0.2
5
µA
0°C≤TJ ≤125°C
2.65≤VIN ≤7V
Adjusted Pin Current Change
(∆IADJ)
10mA≤IO≤1A
0°C≤TJ ≤125°C
IO=0.5A
Temperature Stability
0.5
0°C≤TJ ≤125°C
% VOUT
Minimum Load Current ( Adj. )
0°C≤TJ ≤125°C
5
10
mA
Quiescent Current ( Fixed Version)
0°C≤TJ ≤125°C
10
14
mA
RMS Output Noise (% of VOUT)
10Hz≤f≤10KHz
0.003
%VOUT
72
dB
Ripple Rejection Ratio
120Hz input ripple
COUT=25µF
60
4
AIC1117A
n TYPICAL
PERFORMANCE CHARACTERISTICS
Load Transient Response
Line Transient Response
Output Voltage
(mV, AC)
Output Voltage
(V, AC)
0.1
0.05
0
-0.05
V IN=5V
C IN=1µ F
C OUT=10µF (Tantalum)
V OUT=3.3V
0.4A
0.1A
0
40
80
120
0
--50
COUT =10µ F (Tantalum)
VOUT=3.3V
--100
Input Voltage (V)
Load Current
-0.1
50
160
7.0
6.0
0
200
10
1.24
1.22
1.20
1.18
1.16
0
200
400
30
40
50
Minimum Operating Current
Dropout Voltage (VOUT=3.3V)
1.26
20
Time (µS)
Minimum Operating Current (mA)
Minimum Differential Voltage (V)
Time (µS)
600
800
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0
1000
Output Current (mA)
1
2
3
4
5
Differential Voltage (V)
Minimum Load Current (Adjustable Version)
Minimum Load Current (mA)
5
T J=125 °C
4
3
T J=125 °C
2
TJ=0°C
1
0
1
2
3
4
5
6
7
8
9
Input/Output Differential (V)
5
AIC1117A
n BLOCK DIAGRAM
VIN
Current Amp.
+
-
VREF +
1.25V
GM
Thermal
Limit
Current
Limit
55 µA
VOUT
For fixed voltage
device
ADJ
GND
n PIN DESCRIPTIONS
ADJ PIN (GND PIN -
Providing VREF=1.25V (typ.) for adjustable VOUT. VREF=VOUT-V ADJ and IADJ=55µA (typ.)
Power ground.)
VOUT PIN -
Adjustable output voltage.
VIN PIN
Power Input.
-
6
AIC1117A
n PHYSICAL DIMENSIONS
l
TO-220 (unit: mm)
A
E
Φ3.81±0.27
F
D
SYMBOL
MIN
MAX
A
3.56
4.82
D
14.23
16.51
E
9.66
10.66
e
2.29
2.79
e1
0.50
1.15
e2
-
1.10
F
0.51
1.39
J1
2.04
2.92
L
12.70
14.73
SYMBOL
MIN
MAX
A
2.19
2.38
A1
1.02
1.27
b
0.64
0.88
b2
5.21
5.46
C1
0.46
0.58
D
5.33
5.59
E
6.35
6.73
L
e1
J1
e
l
e2
TO-252 (unit: mm)
E
C1
b2
A
D
H
L
b
e
e
2.28 (TYP.)
H
9.40
10.42
L
0.51
-
A1
7
AIC1117A
l
SOT-223
1.80 MAX
D
B1
13 ° ± 3
E
°
H
e
A1
B
13 ° ± 3 °
3 (PLCS)
SYMBOL
MIN
MAX
A1
0.02
0.12
B
0.60
0.80
B1
2.90
3.15
C
0.24
0.35
D
6.30
6.80
E
3.30
3.70
e
C
2.30 (TYP.)
H
6.70
7.30
SYMBOL
MIN
MAX
A
4.06
4.83
b
0.50
1.00
b2
1.14
1.40
C
-
0.7
c2
1.14
1.40
D
8.63
9.66
E
9.65
10.29
0° ~ 10 °
0.91 MIN
13 ° ± 3 °
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SOT-223 Marking
Part No.
AIC1117ACY
AIC1117A-28CY
AIC1117A-33CY
AIC1117A-50CY
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Marking
BS17
BS28
BS33
BS50
TO-263 (unit: mm)
E
A
C2
L2
L
D
L1
e
e
b2
C
b
2.54 (TYP.)
L
14.60
15.88
L1
2.28
2.80
L2
-
1.40
8