AIC1739
Low Output Voltage, 300mA Low Dropout
Linear Regulator
FEATURES
Low Dropout Voltage of 180mV at 100mA Output
Current (3.0V Output Version).
Guaranteed 300mA Output Current.
Low Ground Current at 55µA.
Input Voltage Range up to 12V.
Internal
Current.
2% Accuracy Output Voltage of 1.8V/ 2.0V/ 2.5V/
2.7V/ 3.0V.
Current Limiting and Thermal Protection.
1.3Ω P-MOSFET Draws
no Base
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.
zero
to
Typical
ground
current
remains
is
approximately 55µA, for loading ranging from
maximum.
Dropout
voltage
exceptionally low. Built-in output current limiting
and thermal limiting provide maximal protection
to the AIC1739 against fault conditions.
The AIC17397 is available in popular 3-pin
SOT-89 and TO-92 packages.
APPLICATIONS
CD-ROM Drivers.
LAN Cards.
Microprocessor.
Wireless Communication Systems.
Battery Powered Systems.
TYPICAL APPLICATION CIRCUIT
V
IN
VIN
VOUT
AIC1739
V
OUT
+
1µF
C
IN
GND
+
10µF
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-1739P-02
010405
1
AIC1739
ORDERING INFORMATION
AIC1739-XXXXXX
PACKING TYPE
TB: TUBE
TR: TAPING & REEL
PACKAGING TYPE
X: SOT-89
ZT: TO-92
ZL: TO-92
C: Commercial
P: Lead Free Commercial
OUTPUT VOLTAGE
18: 1.8V
20: 2.0V
25: 2.5V
27: 2.7V
30: 3.0V
Example: AIC1739-18CXTR
1.8V version in SOT-89 Package &
Taping & Reel Packing Type
AIC1739-18PXTR
1.8V version in SOT-89 Lead Free
Package & Taping & Reel Packing Type
PIN CONFIGURATION
FRONT VIEW
(CX&PX)
1: VOUT
2: GND
3: VIN
1
2
3
TOP VIEW
(CZT&PZT)
1: GND
2: VIN
3: VOUT
1
2
3
TOP VIEW
(CZL&PZL)
1: VIN
2: GND
3: VOUT
1
2
3
SOT-89 MARKING
Part No.
AIC1739-18
AIC1739-20
AIC1739-25
AIC1739-27
AIC1739-30
CX
AY18
AY20
AY25
AY27
AY30
PX
AY18P
AY20P
AY25P
AY27P
AY30P
2
AIC1739
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
TO-92 Package
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.)
PARAMETER
TEST CONDITIONS
No Load
AIC1739-30
AIC1739-27
AIC1739-25
AIC1739-20
AIC1739-18
(Note 1)
(Ta=25°C, C
IN
=1µF, C
OUT
=10µF, unless
MIN.
2.940
2.646
2.550
1.960
1.764
TYP.
3.000
2.700
2.500
2.000
1.800
50
MAX.
3.060
2.754
2.550
2.040
1.836
150
10
25
UNIT
V
Output Voltage
V
IN
=4.0~12V
V
IN
=4.0~12V
V
IN
=4.0~12V
V
IN
=4.0~12V
V
IN
=4.0~12V
Output Voltage
Temperature
Coefficiency
Line Regulation
Load Regulation
(Note 2)
Current Limit
(Note 3)
PPM/°C
mV
mV
mA
I
L
=1mA
V
IN
=4.0~12V
V
IN
=5V, I
L
=0.1~300mA
V
IN
=5V, V
OUT
=0V
320
3
7
440
0.2
540
570
610
820
920
55
Dropout Voltage
(Note 4)
Ground Current
AIC1739
AIC1739-30
AIC1739-27
AIC1739-25
AIC1739-20
AIC1739-18
I
O
=0.1mA~I
MAX
I
L
=0.1mA
I
L
=300mA
I
L
=300mA
I
L
=300mA
I
L
=300mA
I
L
=300mA
V
IN
=4~12V
10
640
670
710
970
1070
80
mV
µA
3
AIC1739
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.
TYPICAL PERFORMANCE CHARACTERISTICS
1000
900
800
V
OUT
=1.8V
V
OUT
=2.0V
Dropout Voltage (mV)
V
OUT
C
OUT
=1µF
V
OUT
=3.0V
700
600
500
400
300
200
100
0
0
50
100
100mV/DIV
V
OUT
=2.5V
V
OUT
=2.7V
V
OUT
=3.0V
150
200
250
300
I
OUT
=150mA
I
OUT
I
OUT
=0.1mA
Load Current (mA)
Fig. 1
Dropout Voltage vs. Load Current
Time (0.5mS/DIV)
Fig. 2
Load Transient Response
C
OUT
=10µF
V
OUT
V
OUT
=3.0V
20mV/DIV
C
OUT
=1µF
I
L
=1mA
V
IN
V
IN
=4.0V
V
IN
=6V
I
OUT
=150mA
I
OUT
I
OUT
=0.1mA
V
OUT
V
OUT
=3.0V
20mV/DIV
Time (0.5mS/DIV)
Fig. 3
Load Transient Response
Fig. 4
Time (1mS/DIV)
Line Transient Response
4
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