AIC1732
300mA Low Dropout Linear Regulator
FEATURES
Low Dropout Voltage of 130mV at 100mA Output
Current (5.2V Output Version).
Guaranteed 300mA Output Current.
Low Ground Current at 55µA.
Input Voltage Range up to 12V.
Internal
Current.
2% Accuracy Output Voltage of 3.3V/ 3.4V/ 3.5V/
3.6V/ 3.7V/ 3.8V/ 5.0V/ 5.2V.
Current Limiting and Thermal Protection.
1.3Ω P-MOSFET Draws
no Base
DESCRIPTION
The AIC1732 is a 3-pin low dropout linear
regulator. The superior characteristics of the
AIC1732 include zero base current loss, very low
dropout voltage, and 2% accuracy output voltage.
Typical ground current remains approximately
55µA, for loading ranging from zero to maximum.
Dropout voltage turns substantially low when
output current is 100mA Built-in output current
limiting and thermal limiting provide maximal
protection
conditions.
The AIC1737 is available in popular 3-pin
SOT-89 package.
to
the
AIC1732
against
fault
APPLICATIONS
CD-ROM Drivers.
LAN Cards.
Microprocessor.
Wireless Communication Systems.
Battery Powered Systems.
TYPICAL APPLICATION CIRCUIT
VIN
V
IN
VOUT
AIC1732
V
OUT
+
1
µ
F
C
IN
GND
+
10
µF
C
OUT
Low Dropout Linear Regulator
Analog Integrations Corporation
Si-Soft Research Center
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.
TEL: 886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
DS-1732P-02
010405
1
AIC1732
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage
Operating Temperature Range
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering) 10 sec.
Power Dissipation
SOT-89 Package
--0.3~12V
--40°C~ 85°C
125°C
- -65°C~150°C
260°C
-0.5W
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
TEST CIRCUIT
Refer to TYPICAL APPLICATION CIRCUIT.
ELECTRICAL CHARACTERISTICS
otherwise specified.)
(T
A
=25°C, C
IN
=1µF, C
OUT
=10µF, unless
PARAMETER
Output Voltage
No Load
AIC1732-52
AIC1732-50
AIC1732-38
AIC1732-37
AIC1732-35
AIC1732-33
(Note 1)
I
L
=1mA
AIC1732-52
AIC1732-50
AIC1732-38
AIC1732-37
AIC1732-35
AIC1732-33
TEST CONDITIONS
V
IN
=5.5~12V
V
IN
=5.5~12V
V
IN
=4.1~12V
V
IN
=4.0~12V
V
IN
=4.0~12V
V
IN
=3.6~12V
MIN.
5.100
4.900
3.725
3.625
3.430
3.235
TYP.
5.2
5.0
3.8
3.7
3.5
3.3
50
MAX.
5.300
5.100
3.875
3.775
3.570
3.365
150
UNIT
V
Output Voltage
Temperature
Coefficiency
Line Regulation
PPM/°C
V
IN
=5.5~12V
V
IN
=5.5~12V
V
IN
=4.1~12V
V
IN
=4.0~12V
V
IN
=4.0~12V
V
IN
=3.6~12V
5
5
5
5
5
5
15
15
15
15
15
15
mV
3
AIC1732
ELECTRICAL CHARACTERISTICS
PARAMETER
Load Regulation
(Note 2)
TEST CONDITIONS
AIC1732-52
AIC1732-50
AIC1732-38
AIC1732-37
AIC1732-35
AIC1732-33
AIC1732-52
AIC1732-50
AIC1732-38
AIC1732-37
AIC1732-35
AIC1732-33
AIC1732-52
AIC1732-50
AIC1732-38
AIC1732-37
AIC1732-35
AIC1732-33
I
O
=0.1mA~I
MAX
AIC1732-52
AIC1732-50
AIC1732-38
AIC1732-37
AIC1732-35
AIC1732-33
( Continued )
MIN.
TYP.
15
15
15
15
15
15
440
440
440
440
440
440
400
400
540
540
540
540
55
55
55
55
55
55
MAX.
40
40
40
40
40
40
UNIT
mV
Current Limit
(Note 3)
Dropout Voltage
(Note 4)
V
IN
=7V, I
L
=0.1~300mA
V
IN
=7V, I
L
=0.1~300mA
V
IN
=5V, I
L
=0.1~300mA
V
IN
=5V, I
L
=0.1~300mA
V
IN
=5V, I
L
=0.1~300mA
V
IN
=5V, I
L
=0.1~300mA
V
IN
=7V, V
OUT
=0V
V
IN
=7V, V
OUT
=0V
V
IN
=7V, V
OUT
=0V
V
IN
=5V, V
OUT
=0V
V
IN
=5V, V
OUT
=0V
V
IN
=5V, V
OUT
=0V
I
L
=300mA
I
L
=300mA
I
L
=300mA
I
L
=300mA
I
L
=300mA
I
L
=300mA
V
IN
=5.5~12V
V
IN
=5.5~12V
V
IN
=4~12V
V
IN
=4~12V
V
IN
=4~12V
V
IN
=4~12V
300
300
300
300
300
300
mA
500
500
640
640
640
640
80
80
80
80
80
80
mV
Ground Current
µA
Note 1:
Note 2:
Note 3:
Note 4:
Note5:
Guaranteed by design.
Regulation is measured at constant junction temperature, using pulse testing with a low ON time.
Current limit is measured by pulsing a short time.
Dropout voltage is defined as the input to output differential at which the output voltage drops
100mV below the value measured with a 1V differential.
Specifications over -40°C to 85°C operating temperature range are guaranteed by design with
Statistical Quality Controls (SQC), not production test.
4
AIC1732
TYPICAL PERFORMANCE CHARACTERISTICS
Normalized Output Voltage (%)
104
60
103
Ground Current (µA)
-40
0
50
100
125
50
40
30
20
100
98
10
96
0
0
2
4
Temperature (°C)
Input Voltage (V)
6
8
10
12
Fig. 1 Output Voltage vs. Temperature
60
600
500
400
300
Fig. 2 Ground Current vs. Input Voltage
Ground Current (µA)
58
56
I
L
=300mA
I
L
=150mA
54
Dropout Voltage (mV)
V
OUT
=3.3V, 3.5V, 3.7V & 3.8V
200
V
OUT
=5.0V & 5.2V
100
52
I
L
=0.1mA
50
-
50
-
25
0
0
25
50
75
100
125
0
50
100
150
200
250
300
Temperature (°C)
Load Current (mA)
Fig. 3 Ground Current vs. Temperature
100
Fig. 4 Dropout Voltage vs. Load Current
Output Voltage
(mV, AC)
0
Output Voltage
(mV, AC)
Load Current
(mA)
0.9
1.0
50
20
0
-50
C
OUT
=1µF
I
L
=1mA
V
OUT
=5.2V
-20
-40
-60
Input Voltage
(V)
8
6
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
150
0.1
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Time (mS)
Fig. 5 Line Transient Response
Time (mS)
Fig. 6 Load transient Response
5
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