AIC1117
800mA Low Dropout Positive Regulator
FEATURES
Dropout Voltage 1.2V at 800mA Output Current.
Fast Transient Response.
Line Regulation, typical at 0.015%.
Load Regulation, typical at 0.1%.
Current Limiting and Thermal Protection.
Adjustable Output Voltage or Fixed at 1.8V, 2.5V
and 3.3V.
Standard 3-Pin Power Packages.
DESCRIPTION
The AIC1117 is a low dropout, three terminals
regulator designed to provide output current
up to 800mA. The device is available in an
adjustable version and fixed output voltage of
1.8V, 2.5V and 3.3V. Dropout voltage of
maximum of 1.4V is guaranteed at 800mA
output current. The quality of low dropout
voltage and fast transient response make this
device ideal for low voltage microprocessor
applications.
The AIC1117 requires output capacitance of a
minimum of 10μF for stability. Built-in output
current limiting and thermal limiting provide
maximal protection to the AIC1117 against
fault conditions.
APPLICATIONS
Active SCSI Terminators.
Post Regulators for Switching Supplies.
Battery Chargers.
PC Add-On Card.
TYPICAL APPLICATION CIRCUIT
V
IN
5V
3
AIC1117
1 ADJ
C1 +
10F
2
V
REF
V
OUT
3.3V
RF1
125
+
1%
C2
RF2
10F
205
(Note1)
1%
V
REF
=V
OUT
- V
ADJ
=1.25V (typ.)
V
OUT
=V
REF
x (1+RF2/RF1)+ I
ADJ
x RF2
I
ADJ
=55A (typ.)
(1) C1 needed if device is far away from filter
capacitors.
(2) C2 required for stability.
Adjustable Voltage Regulator
V
IN
5V
3
AIC1117-33
1
2
V
OUT
3.3V
C1 +
10F
GND
+
C2
10F
(Note1)
Fixed Voltage Regulator
Analog Integrations Corporation
Si-Soft Research Center
3A1, 1 Li-Hsin 1 Rd., Science Park , Hsinchu 300, Taiwan , R.O.C.
TEL: 886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
st
DS-1117G-02
20131018
1
AIC1117
ORDERING INFORMATION
AIC1117-XXXXXX
PACKING TYPE
TR: TAPE & REEL
TB: TUBE
PACKAGING TYPE
E: TO-252
M: TO-263
T: TO-220
Y: SOT-223
P: Lead Free Commercial
G: Green Package
OUTPUT VOLTAGE
DEFAULT:ADJUSTABLE
18: 1.8V
25: 2.5V
33: 3.3V
PIN CONFIGURATION
TO-252 (GE&PE)
TOP VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
1
2
3
TO-263 (GM&PM)
TOP VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
1
2
3
TO-220 (GT&PT)
FRONT VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
1
2
3
Example: AIC1117-25GETR
2.5V version in TO-252 Green
Package & Taping & Reel
Packing Type
AIC1117-25PYTR
2.5V version in SOT-223 Lead
Free Package & Taping & Reel
SOT-223 (GY&PY)
TOP VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
1
2
3
SOT-223 Marking
Part No.
AIC1117
AIC1117-18
AIC1117-25
AIC1117-33
GY
AK17G
AK18G
AK25G
AK33G
PY
AK17P
AK18P
AK25P
AK33P
2
AIC1117
ABSOLUTE MAXIMUM RATINGS
VIN pin to ADJ/ GND pin
Operating Temperature Range
Storage Temperature Range
Maximum Junction Temperature
Lead Temperature (Soldering, 10 sec)
Thermal Resistance (Junction to Case)
TO-220
TO-252
SOT-223
TO-263
Thermal Resistance Junction to Ambient
TO-252
SOT-223
TO-220
(Assume no ambient airflow, no heatsink) TO-263
7V
–40C to 85C
–65C to 150C
125C
260C
3C /W
12.5C /W
15C /W
3C /W
100C/W
60C /W
155C /W
50C /W
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
TEST CIRCUIT
Refer to TYPICAL APPLICATION CIRCUIT.
3
AIC1117
ELECTRICAL CHARACTERISTICS
(V
IN
=5V, T
A
=25C, I
O
=10mA, unless otherwise specified) (Note2)
PARAMETER
Reference Voltage
TEST CONDITIONS
AIC1117 (ADJ), T
J
=25C
0CT
J
125C
AIC1117-18, V
IN
=3.3V
MIN.
1.238
1.225
1.78
2.47
3.26
TYP.
1.25
1.25
1.8
2.5
3.30
0.015
0.035
0.1
0.2
1.2
MAX.
1.262
1.275
1.82
2.53
3.33
0.2
0.2
0.3
UNIT
V
Output Voltage
AIC1117-25, V
IN
=5V
AIC1117-33, V
IN
=5V
2.65V
IN
7V,
V
OUT
=1.25V
V
Line Regulation
T
J
=25C
0CT
J
125C
T
J
=25C
10mA
I
O
800mA
0CT
J
125C
%
Load Regulation
%
0.4
1.4
V
A
55
120
A
A
%
10
14
mA
mA
%
dB
Dropout Voltage
Current Limit
Adjusted Pin Current (I
ADJ
)
Adjusted Pin Current Change
(I
ADJ
)
Temperature Stability
Minimum Load Current
GND Current
RMS Output Noise (% of V
OUT
)
Ripple Rejection Ratio
V
OUT
,
V
REF
=1%
10mAI
O
800mA
0.85
2.65V
IN
7V
10mAI
O
800mA
2.65V
IN
7V
10mAI
O
800mA
I
O
=0.5A
0.2
0.5
5
5
2.65V
IN
7V
10Hz
f
10KHz
120Hz input ripple
C
OUT
=25F
60
10
0.003
72
Note 1:
To avoid output oscillation, aluminum electrolytic output capacitor is recommended and ceramic
capacitor is not suggested.
Note 2:
Specifications are production tested at T
A
=25C. Specifications over the -40C to 85C operating
temperature range are assured by design, characterization and correlation with Statistical Quality
Controls (SQC).
4
AIC1117
TYPICAL PERFORMANCE CHARACTERISTICS
Minimum Differential Voltage (V)
1.8
5
Minimum Load Current (mA)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
200
400
600
800
1000
T
A
=125C
4
T
A
=0C
T
A
=50C
T
A
=125C
3
T
A
=25C
2
T
A
=0C
1
0
1
2
3
4
5
6
7
8
9
Output Current (mA)
Fig. 1 AIC1117 (ADJ) Dropout Voltage
Input/
Output
Differential (V)
Fig. 2 Minimum Load Current (Adjustable Version)
0.09
1.6
Output Voltage Deviation (%)
Thermal Regulation (%/W)
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0.5
I
OUT
=500mA (30mS Puls)
T
A
=125C
1.2
0.8
0.4
0.0
-0.4
-0.8
-1.2
-1.6
I
OUT
=0.5A
1.0
1.5
2.0
2.5
3.0
3.5
-20
0
20
40
60
80
100
120
140
Power (Watt)
Fig. 3 AIC1117 (ADJ) Power vs. Thermal Regulation
Temperature (C)
Fig. 4 AIC1117 (ADJ) Temperature Stability
-20
Ripple Rejection Ratio (dB)
-30
-40
C
OUT
=3.3F
C
OUT
=10F
-50
-60
-70
-80
1
10
C
OUT
=25F
10
2
10
3
Frequency (Hz)
10
4
10
5
10
6
10
7
Fig. 5 AIC1117 (ADJ) Ripple Rejection Ratio (dB)
5
