AIC1723A
500mA Low Dropout Linear Regulator
FEATURES
Low Dropout Voltage of 650mV at 500mA
Output Current (3V Output Version).
Guaranteed 500mA Output Current.
Maximum Input Voltage is 8V
Low Ground Current at 65µA.
2% Accuracy Output Voltage of 1.8V/ 2.0V
/2.5V /2.7V/ 3.0V/ 3.3V/ 3.5V/ 3.7V/ 3.8V/ 5.0V/
5.2V.
Only needs 4.7µF Output Capacitor for Stability.
Current and Thermal Limiting.
DESCRIPTION
The AIC1723A is a 3-pin low dropout linear
regulator. The superior characteristics of the
AIC1723A include zero base current loss,
very low dropout voltage, and 2% accuracy
output voltage. Typical ground current
remains approximately 65
µ
A, for loading
ranging from zero to maximum. Dropout
voltage turns substantially low when output
current is 500mA. Built-in output current
limiting and thermal limiting provide maximal
protection to the AIC1723A against fault
conditions.
The AIC1723A is available with popular SOT-
23, SOT-223, SOT-89 and TO-252 packages.
APPLICATIONS
CD-ROM Drivers.
LAN Cards.
Microprocessor.
RAM Module.
Wireless Communication Systems.
Battery Powered Systems.
TYPICAL APPLICATION CIRCUIT
V
IN
V
IN
V
OUT
AIC1723A
V
OUT
+
1µF
C
IN
GND
+
4.7µF
C
OUT
Low Dropout Linear Regulator
(C
IN
and C
OUT
are electrolytic capacitor)
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-1723AP-02 082304
1
AIC1723A
SOT-89 MARKING
Part No.
AIC1723A-18XX
AIC1723A-20XX
AIC1723A-25XX
AIC1723A-27XX
AIC1723A-30XX
AIC1723A-33CY
CX
AV18
AV20
AV25
AV27
AV30
AV33
PX
AV18P
AV20P
AV25P
AV27P
AV30P
AV33P
Part No.
AIC1723A-35XX
AIC1723A-37XX
AIC1723A-38XX
AIC1723A-50XX
AIC1723A-52XX
CX
AV35
AV37
AV38
AV50
AV52
PX
AV35P
AV37P
AV38P
AV50P
AV52P
SOT-223 MARKING
Part No.
AIC1723A-18XY
AIC1723A-20XY
AIC1723A-25XY
AIC1723A-27XY
AIC1723A-30XY
AIC1723A-33XY
CY
BU18
BU20
BU25
BU27
BU30
BU33
PY
BU18P
BU20P
BU25P
BU27P
BU30P
BU33P
Part No.
AIC1723A-35XY
AIC1723A-37XY
AIC1723A-38XY
AIC1723A-50XY
AIC1723A-52XY
CY
BU35
BU37
BU38
BU50
BU52
PY
BU35P
BU37P
BU38P
BU50P
BU52P
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage
...................................................…………..…….................. -0.3~8V
Operating Temperature Range
…………….....………........…………................ -40°C~
85°C
Junction Temperature
……………………………………………………………………...
125°C
Storage Temperature Range
....................……......................……….............
-65°C~150°C
Lead Temperature (Soldering. 10sec)
……………………………………………………
260°C
Thermal Resistance Junction to Ambient
(Assume no Ambient Airflow, no Heatsink)
SOT-23 Package
...….………..…
180°C/W
TO-252 Package
...….………..…
100°C/W
SOT-89 Package
...….………..…
160°C/W
SOT-223 Package
...….………..…
155°C/W
Absolute Maximum Rating are those value beyond which the life of a device may be impaired.
TEST CIRCUIT
Refer to the TYPICAL APPLICATION CIRCUIT
3
AIC1723A
ELECTRICAL CHARACTERISTICS
otherwise specified.)
(Note 1)
(T
A
=25°C, C
IN
=1µF, C
OUT
=4.7µF, unless
PARAMETER
TEST CONDITIONS
No Load
AIC1723A-52
AIC1723A-50
AIC1723A-38
AIC1723A-37
AIC1723A-35
AIC1723A-33
AIC1723A-30
AIC1723A-27
AIC1723A-25
AIC1723A-20
AIC1723A-18
I
L
=1mA,
1.8V≤V
OUT
≤3.2V
3.3V≤V
OUT
≤5.2V
I
L
=0.1~500mA
1.8V≤V
OUT
≤3.9V
4.0V≤V
OUT
≤5.2V
V
IN
=7V, V
OUT
=0V
4.0V≤V
OUT
≤5.2V
3.0V≤V
OUT
≤3.9V
2.5V≤V
OUT
≤2.9V
2.0V≤V
OUT
≤2.4V
1.8V≤V
OUT
≤1.9V
V
IN
=5~8V
V
IN
=7~8V
MIN.
TYP.
MAX.
UNIT
Output Voltage
V
IN
=8V
-2
+2
%
Line Regulation
V
IN
=4V~8V
V
IN
=5.5V~8V
V
IN
=5V
V
IN
=7V
500
3
3
10
20
10
15
30
50
mV
Load Regulation
(Note 2)
Current Limit
(Note 3)
Dropout Voltage
(Note 4)
mV
mA
I
L
=500mA
510
650
780
1100
1400
65
65
90
90
mV
Ground Current
I
O
=0.1mA~I
MAX
1.8V≤V
OUT
≤3.9V
4.0V≤V
OUT
≤5.2V
µA
Note 1:
Note 2:
Note 3:
Note 4:
Specifications are production tested at T
A
=25°C. Specifications over the
-40°C
to 85°C operating
temperature range are assured by design, characterization and correlation with Statistical Quality
Controls (SQC).
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.
4
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