AIC AIC1722-37CX 300ma low dropout linear regulator Datasheet

AIC1722
300mA Low Dropout Linear Regulator
FEATURES
Low Dropout Voltage of 130mV at 100mA
Output Current (5.2V Output Version).
Guaranteed 300mA Output Current.
Internal 1.3Ω P-MOSFET Draws no Base
Current.
Low Ground Current at 55µA.
2% Accuracy Output Voltage of 3.3V/ 3.5V/
3.7V/ 3.8V/ 5.0V/ 5.2V.
Input Voltage Range up to 12V.
Needs only 1µF for Stability.
Current and Thermal Limiting.
DESCRIPTION
The AIC1722 is a 3-pin low dropout linear
regulator. The superior characteristics of the
AIC1722 include zero base current loss, very
low dropout voltage, and 2% accuracy output
voltage.
Typical
ground
current
remains
approximately 55µA, from no load to maximum
loading conditions. Dropout voltage at 100mA
output current is exceptionally low: 130mV for
the AIC1722-50 and AIC1722-52, 180mV for
the AIC1722-33, AIC1722-35, and AIC1722-37
AIC1722-38. Output current limiting and thermal
APPLICATIONS
limiting
Voltage Regulator for CD-ROM Drivers.
Voltage Regulator for LAN Cards.
Voltage Regulator for Microprocessor.
Wireless Communication Systems.
Battery Powered Systems.
are
protection
to
built
the
in
to
provide
AIC1722
maximal
against
fault
conditions.
The AIC1722 comes in the popular 3-pin
SOT-89 and TO-92 packages.
TYPICAL APPLICATION CIRCUIT
VIN
VOUT
AIC1722
VIN
+
1µF
CIN
GND
VOUT
+
10µF
COUT
Low Dropout Linear Regulator
Analog Integrations Corporation
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-1722-01
TEL: 886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
1
AIC1722
ORDERING INFORMATION
AIC1722-XXXXX
ORDER NUMBER
AIC1722-33CX
AIC1722-35CX
AIC1722-37CX
AIC1722-38CX
AIC1722-50CX
AIC1722-52CX
(SOT-89)
PACKAGING TYPE
X : SOT-89
ZT : TO-92
ZL : TO-92
TEMPERATURE RANGE
C: 0°C~70°C
FRONT VIEW
1: VOUT
2: GND
3: VIN
1
AIC1722-33CZT
AIC1722-35CZT
AIC1722-37CZT
AIC1722-38CZT
AIC1722-50CZT
AIC1722-52CZT
(TO-92 T TYPE)
OUTPUT VOLTAGE
33: 3.3V
35: 3.5V
37: 3.7V
38: 3.8V
50: 5.0V
52: 5.2V
PIN CONFIGURATION
2
3
TOP VIEW
1
1: GND
2: VIN
3: VOUT
AIC1722-33CZL
AIC1722-35CZL
AIC1722-37CZL
AIC1722-38CZL
AIC1722-50CZL
AIC1722-52CZT
(TO-92 L TYPE)
2
3
TOP VIEW
1
1: VIN
2: GND
3: VOUT
2
3
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage ...................................................…………..…….................. -0.3~12V
Operating Junction Temperature Range .....………........…………................ -40°C~ 125°C
Storage Temperature Range ....................……......................……….............. -65°C~150°C
Power Dissipation
SOT-89 Package ....…...…................. 0.5W
TO-92 Package .....…………............. 0.5W
TEST CIRCUIT
ELECTRICAL CHARACTERISTICS
Refer to the TYPICAL APPLICATION CIRCUIT
otherwise specified.)
PARAMETER
Output Voltage
(Ta=25°°C, CIN=1µ
µF, COUT=10µ
µF, unless
TEST CONDITIONS
No Load
AIC1722-52
AIC1722-50
AIC1722-38
AIC1722-37
AIC1722-35
AIC1722-33
VIN=5.5~12V
VIN=5.5~12V
VIN=4.1~12V
VIN=4.0~12V
VIN=4.0~12V
VIN=3.6~12V
MIN.
TYP.
MAX.
UNIT
5.100
4.900
3.725
3.625
3.430
3.235
5.2
5.0
3.8
3.7
3.5
3.3
5.300
5.100
3.875
3.775
3.570
3.365
V
2
AIC1722
ELECTRICAL CHARACTERISTICS
PARAMETER
Output Voltage
Temperature
Coefficiency
Line Regulation
Load Regulation
(Note 2)
Current Limit
(Note 3)
Dropout Voltage
(Note 4)
Ground Current
Note 1:
Note 2:
Note 3:
Note 4:
(Continued)
TEST CONDITIONS
MIN.
(Note 1)
IL=1mA
AIC1722-52
AIC1722-50
AIC1722-38
AIC1722-37
AIC1722-35
AIC1722-33
AIC1722-52
AIC1722-50
AIC1722-38
AIC1722-37
AIC1722-35
AIC1722-33
AIC1722-52
AIC1722-50
AIC1722-38
AIC1722-37
AIC1722-35
AIC1722-33
AIC1722s
AIC1722-52
AIC1722-50
AIC1722-38
AIC1722-37
AIC1722-35
AIC1722-33
IO=0.1mA~IMAX
AIC1722-52
AIC1722-50
AIC1722-38
AIC1722-37
AIC1722-35
AIC1722-33
VIN=5.5~12V
VIN=5.5~12V
VIN=4.1~12V
VIN=4.0~12V
VIN=4.0~12V
VIN=3.6~12V
VIN=7V, IL=0.1~300mA
VIN=7V, IL=0.1~300 mA
VIN=5V, IL=0.1~300mA
VIN=5V, IL=0.1~300mA
VIN=5V, IL=0.1~300mA
VIN=5V, IL=0.1~300mA
VIN=7V, VOUT=0V
VIN=7V, VOUT=0V
VIN=7V, VOUT=0V
VIN=5V, VOUT=0V
VIN=5V, VOUT=0V
VIN=5V, VOUT=0V
IL=0.1mA
IL=300mA
IL=300mA
IL=300mA
IL=300mA
IL=300mA
IL=300mA
VIN=5.5~12V
VIN=5.5~12V
VIN=4~12V
VIN=4~12V
VIN=4~12V
VIN=4~12V
320
320
320
320
320
320
TYP.
MAX.
UNIT
50
150
PPM/°C
3
3
3
3
3
3
7
7
7
7
7
7
440
440
440
440
440
440
0.2
400
400
540
540
540
540
10
10
10
10
10
10
25
25
25
25
25
25
10
500
500
640
640
640
640
mV
55
55
55
55
55
55
80
80
80
80
80
80
µA
mV
mV
mA
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.
3
AIC1722
TYPICAL PERFORMANCE CHARACTERISTICS
Ground Current vs. Input Voltage
Output Voltage vs. Temperature
60
50
103
Ground Current (µA)
Normalized Output Voltage (%)
104
100
98
40
30
20
10
96
0
-40
0
0
50
100
125
0
2
4
Ground Current vs. Temperature
10
12
Dropout Voltage vs. Load Current
VOUT=3.3V, 3.5V, 3.7V & 3.8V
500
Dropout Voltage (mV)
58
Ground Current (µA)
8
600
60
IL =300mA
56
IL =150mA
54
IL=0.1mA
52
50
6
Input Voltage (V)
Temperature (°C)
400
300
200
VOUT=5.0V & 5.2V
100
0
-50
0
-25
25
75
50
100
0
125
50
100
150
200
300
250
Load Current (mA)
Temperature (°c)
Line Transient Response
Load transient Response
50
0
COUT=1µF
IL=1mA
VOUT=5.2V
-50
20
0
-20
-40
-60
Load Current
(mA)
Input Voltage
(V)
Output Voltage
(mV, AC)
Output Voltage
(mV, AC)
100
8
6
0
0.1
0.2
0.3
0.4
0.5
0.6
Time (mS)
0.7
0.8
0.9
1.0
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)
4
AIC1722
TYPICAL PERFORMANCE CHARACTERISTICS
Load Transient Response
Recommended Max. Output Current v.s. Input Voltage
COUT= 1 µF
V OUT= 5.2V
Output Current, IOUT (mA)
Out put Volt age
(mV, AC)
400
100
0
-100
-200
Load Current
(mA)
(Continued)
150
0.1
3.3V
3.5V
3.7V
3.8V
300
200
5.2V
5V
100
0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
4
5
6
Time (mS)
7
8
9
Input Voltage VIN (V)
10
11
12
BLOCK DIAGRAM
VIN
VOUT
CURRENT
LIMITING
ERROR
AMP
-
-
+
THERMAL
SHUTDOWN
1.235V
Reference
GND
PIN DESCRIPTION
APPLICATION INFORMATIONS
VOUT PIN - Output pin.
GND PIN - Power GND.
VIN PIN - Power Supply Input.
A 1µF (or greater) capacitor is required between
the AIC1722 output and ground for stability.
Without this capacitor the part will oscillate. Even
though most types of capacitor may work, the
equivalent series resistance (ESR) should be held
to 5Ω or less if Aluminum electrolytic type is used.
Many Aluminum electrolytics have electrolytes
that freeze at about -30°C, so solid tantalums are
recommended for operation below -25°C. The
value of this capacitor may be increased without
limit.
A 0.1µF capacitor (or greater) should be placed
from the AIC1722 input to ground if the lead
inductance between the input and power source
exceeds 500nH (approximately 10 inches of trace).
5
AIC1722
PHYSICAL DIMENSIONS
SOT-89 (unit: mm)
A
D
D1
C
H
E
L
B
e
e1
SYMBOL
MIN
MAX
A
1.40
1.60
B
0.36
0.48
C
0.35
0.44
D
4.40
4.60
D1
1.62
1.83
E
2.29
2.60
e
1.50 (TYP.)
e1
3.00 (TYP.)
H
3.94
4.25
L
0.89
1.20
SYMBOL
MIN
MAX
A
4.32
5.33
SOT-89 MARKING
Part No.
AIC1722-33
AIC1722-35
AIC1722-37
AIC1722-38
AIC1722-50
AIC1722-52
Marking
AH33
AH35
AH37
AH38
AH50
AH52
TO-92 (unit: mm)
A
E
L
C
e1
D
C
0.38 (TYP.)
D
4.40
5.20
E
3.17
4.20
e1
L
1.27 (TYP.)
12.7
-
6
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