Datasheet AIC1739-30CZT, AIC1739-30CZL, AIC1739-30CX, AIC1739-27CZT, AIC1739-27CZL Datasheet (AIC)
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µ
µ
AIC1739
VIN
AIC1739
300mA Low Dropout Linear Regulator
n FEATURES
l Low Dropout Voltage of 180mV at 100mA
Output Current (3.0V Output Version).
l Guaranteed 300mA Output Current.
l Internal 1.3Ω P-MOSFET Draws no Base
Current.
l Low Ground Current at 55
l 2% Accuracy Output Voltage of 1.8V/ 2.0V/
A.
2.5V/ 2.7V/ 3.0V.
l Input Voltage Range up to 12V .
l Needs only 1
l Current and Thermal Limiting.
F for Stability.
n APPLICATIONS
l Voltage Regulator for CD-ROM Drivers.
l Voltage Regulator for LAN Cards.
l Voltage Regulator for Microprocessor.
l Wireless Communication Systems.
l Battery Powered Systems.
n DESCRIPTION
The AIC1739 is a 3-pin low dropout linear
regulator. The superior characteristics of the
AIC1739 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
is exceptionally low. Output current limiting
and thermal limiting are built in to provide
maximal protection to the AIC1739 against
fault conditions.
The AIC1739 comes in the popular 3-pin
SOT-89 and TO-92 packages.
TYPICAL APPLICATION CIRCUIT
n
VOUT
V
IN
1µF
C
IN
GND
V
OUT
µ
F
10
C
OUT
Low Dropout Linear Regulator
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC www.analog.com.tw
DS-1739-01 TEL: 886-3-5772500 FAX: 886-3-5772510 1
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n ORDERING INFORMATION
AIC1739-XCX
PACKAGING TYPE
X: SOT89
ZT: TO92
ZL: TO92
ORDER NUMBER
AIC1739-18CX
AIC1739-20CX
AIC1739-25CX
AIC1739-27CX
AIC1739-30CX
(SOT-89)
AIC1739
PIN CONFIGURATION
FRONT VIEW
1: VOUT
2: GND
3: VIN
1 2 3
OUTPUT VOLTAGE
18: 1.8V
20: 2.0V
25: 2.5V
27: 2.7V
30: 3.0V
AIC1739-18CZT
AIC1739-20CZT
AIC1739-25CZT
AIC1739-27CZT
AIC1739-30CZT
(TO-92)
AIC1739-18CZL
AIC1739-20CZL
AIC1739-25CZL
AIC1739-27CZL
AIC1739-30CZL
(TO-92 L TYPE)
TOP VIEW
1: GND
2: VIN
3: VOUT
TOP VIEW
1: VIN
2: GND
3: VOUT
n ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage ...................................................…………..…….................. -0.3~12V
Operating Junction Temperature Range .....………........…………................ -40°C~ 85 °C
Storage Temperature Range ....................……......................……….............. -65°C~150°C
Power Dissipation SOT-89 Package ....…...…................. 0.5W
TO-92 Package .....…………............. 0.5W
1
2
3
1
2
3
n TEST CIRCUIT
Refer to the TYPICAL APPLICATION CIRCUIT
n ELECTRICAL CHARACTERISTICS (Ta=25 °C, C
otherwise specified.)
PARAMETER TEST CONDITIONS MIN. TYP. MAX. UNIT
Output Voltage No Load
AIC1739-30
AIC1739-27
AIC1739-25
AIC1739-20
AIC1739-18
Output Voltage
(Note 1) 50
Temperature
Coefficiency
VIN=4.0~12V
VIN=4.0~12V
VIN=4.0~12V
VIN=4.0~12V
VIN=4.0~12V
=1µF, C
IN
2.940
2.646
2.550
1.960
1.764
=10µF, unless
OUT
3.000
2.700
2.500
2.000
1.800
3.060
2.754
2.550
2.040
1.836
150 PPM/°C
V
2
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Load Current (
mA)
OUT
100mV/DIV
Time (0.5mS/DIV)
Load Transient Response
AIC1739
n ELECTRICAL CHARACTERISTICS (Continued)
PARAMETER TEST CONDITIONS MIN. TYP. MAX. UNIT
Line Regulation IL=1mA VIN=4.0~12V 3 10 mV
Load Regulation
(Note 2)
Current Limit
(Note 3)
Dropout Voltage
(Note 4)
Ground Current IO=0.1mA~I
Note 1: Guaranteed by design.
Note 2: Regulation is measured at constant junction temperature, using pulse testing with a low ON time.
Note 3: Current limit is measured by pulsing a short time.
Note 4: 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.
VIN=5V, IL=0.1~300mA 7 25 mV
VIN=5V, V
AIC1739s
AIC1739-30
AIC1739-27
AIC1739-25
AIC1739-20
AIC1739-18
MAX
IL=0.1mA
IL=300mA
IL=300mA
IL=300mA
IL=300mA
IL=300mA
VIN=4~12V 55 80 µA
=0V 320 440 mA
OUT
0.2
540
570
610
820
920
10
640
670
710
970
1070
mV
TYPICAL PERFORMANCE CHARACTERISTICS
n
1000
900
800
700
600
500
400
300
Dropout Voltage (mV)
200
100
0
0 50 100 150 200 250 300
Dropout Voltage vs Load Current
V
=1.8V
OUT
V
=2.0V
V
V
=3.0V
OUT
OUT
V
OUT
=2.7V
=2.5V
C
=1µF
OUT
V
OUT
I
=0.1mA
OUT
I
OUT
I
OUT
V
=3.0V
OUT
=150mA
3
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Time (0.5mS/DIV)
Load Transient Response
20mV/DIV
Time (1mS/DIV)
Line Transient Response
Input Voltage (V)
2.0V
2.5V
3.0V
2.7V
1.8V
-
-
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
n
C
=1µF
C
=10µF
OUT
V
=3.0V
I
OUT
OUT
=150mA
V
OUT
I
=0.1mA
OUT
I
OUT
20mV/DIV
OUT
IL=1mA
VIN=4.0V
V
IN
V
=3.0V
OUT
OUT
V
VIN=6V
AIC1739
Recommended max. Output Current vs. Input voltage
400
350
300
250
200
150
Dropout Voltage (mV)
100
50
0
3 4 5 6 7 8 9 10 11 12
n BLOCK DIAGRAM
VIN
CURRENT
LIMITING
ERROR
AMP
+
THERMAL
SHUTDOWN
VOUT
1.235V
Reference
GND
4
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e1
n PIN DESCRIPTION
VOUT PIN - Output pin.
GND PIN - Power GND.
VIN PIN - Power Supply Input.
n APPLICATION INFORMATIONS
A 1µF (or greater) capacitor is required between
the AIC1739 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
AIC1739
value of this capacitor may be increased without
limit.
A 0.1µF capacitor (or greater) should be placed
from the AIC1739 input to ground if the lead
inductance between the input and power source
exceeds 500nH (approximately 10 inches of trace).
n PHYSICAL DIMENSIONS
l SOT-89 (unit: mm)
D
D1
H
L
e
SOT-89 MARKING
Part No. Marking
AIC1739-18 AY18
AIC1739-20 AY20
AIC1739-25 AY25
AIC1739-27 AY27
AIC1739-30 AY30
B
A
C
E
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
5
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C
E
l TO-92 (unit: mm)
AIC1739
SYMBOL MIN MAX
A
D
L
e1
A 4.32 5.33
C 0.38 (TYP.)
D 4.40 5.20
E 3.17 4.20
e1 1.27 (TYP.)
L 12.7 -
6
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