AIC1723A
500mA Low Dropout Linear Regulator
FEATURES
Analog Integrations Corporation Si-Soft Research Center DS-1723AP-02 082304
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 1
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.
APPLICATIONS
CD-ROM Drivers.
LAN Cards.
Microprocessor.
RAM Module.
Wireless Communication Systems.
Battery Powered Systems.
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 µA, 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.
TYPICAL APPLICATION CIRCUIT
+
+
AIC1723A
4.7µF
COUT
VOUT
VOUT
GND
VIN
1µF
CIN
VIN
Low Dropout Linear Regulator
(CIN and COUT are electrolytic capacitor)
AIC1723A
ORDERING INFORMATION
Example: AIC1723A-18CETR
1.8V Version, in TO-252 Package & Tape & Reel
Packing Type
AIC1723A-18PYTR
1.8V Version, in SOT-223 Lead Free Package & Tape
& Reel Packing Type
PACKING TYPE
TR: TAPE & REEL
TB: TUBE
PACKAGE TYPE
E: TO-252
U: SOT-23
X: SOT-89
Y: SOT-223
C: Commercial
P: Lead Free Commercial
OUTPUT VOLTAGE
18: 1.8V
20: 2.0V
25: 2.5V
27: 2.7V
30: 3.0V
33: 3.3V
35: 3.5V
37: 3.7V
38: 3.8V
50: 5.0V
52: 5.2V
A
IC1723A-XXXX XX
PIN CONFIGURATION
TO-252 (CE & PE)
TOP VIEW
1: VOUT
2. GND
3. VIN
2 3 1
SOT-89 (CX & PX)
TOP VIEW
1: GND
2. VIN
3. VOUT 1 2 3
SOT-23 (CU & PU)
TOP VIEW
1: GND
2: VOUT
3: VIN
3
12
SOT-223 (CY & PY)
TOP VIEW
1: VOUT
2. GND
3. VIN 1 2 3
SOT-23 MARKING
Part No. CU PU Part No. CU PU
AIC1723A-18XU BT18 BT18P AIC1723A-35XU BT35 BT35P
AIC1723A-20XU BT20 BT20P AIC1723A-37XU BT37 BT37P
AIC1723A-25XU BT25 BT25P AIC1723A-38XU BT38 BT38P
AIC1723A-27XU BT27 BT27P AIC1723A-50XU BT50 BT50P
AIC1723A-30XU BT30 BT30P AIC1723A-52XU BT52 BT52P
AIC1723A-33XU BT33 BT33P
2
AIC1723A
SOT-89 MARKING
Part No. CX PX Part No. CX PX
AIC1723A-18XX AV18 AV18P AIC1723A-35XX AV35 AV35P
AIC1723A-20XX AV20 AV20P AIC1723A-37XX AV37 AV37P
AIC1723A-25XX AV25 AV25P AIC1723A-38XX AV38 AV38P
AIC1723A-27XX AV27 AV27P AIC1723A-50XX AV50 AV50P
AIC1723A-30XX AV30 AV30P AIC1723A-52XX AV52 AV52P
AIC1723A-33CY AV33 AV33P
SOT-223 MARKING
Part No. CY PY Part No. CY PY
AIC1723A-18XY BU18 BU18P AIC1723A-35XY BU35 BU35P
AIC1723A-20XY BU20 BU20P AIC1723A-37XY BU37 BU37P
AIC1723A-25XY BU25 BU25P AIC1723A-38XY BU38 BU38P
AIC1723A-27XY BU27 BU27P AIC1723A-50XY BU50 BU50P
AIC1723A-30XY BU30 BU30P AIC1723A-52XY BU52 BU52P
AIC1723A-33XY BU33 BU33P
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 SOT-23 Package ...….………..… 180°C/W
(Assume no Ambient Airflow, no Heatsink) 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 (TA=25°C, CIN=1µF, COUT=4.7µF, unless
otherwise specified.) (Note 1)
PARAMETER TEST CONDITIONS MIN. TYP. MAX. UNIT
No Load
Output Voltage
AIC1723A-52
AIC1723A-50
AIC1723A-38
AIC1723A-37
AIC1723A-35
AIC1723A-33
AIC1723A-30
AIC1723A-27
AIC1723A-25
AIC1723A-20
AIC1723A-18
VIN=8V
-2
+2 %
Line Regulation IL=1mA,
1.8V≤VOUT≤3.2V
3.3V≤VOUT≤5.2V
VIN=4V~8V
VIN=5.5V~8V
3
3
10
15
mV
Load Regulation
(Note 2)
IL=0.1~500mA
1.8V≤VOUT≤3.9V
4.0V≤VOUT≤5.2V
VIN=5V
VIN=7V
10
20
30
50
mV
Current Limit
(Note 3) VIN=7V, VOUT=0V 500 mA
Dropout Voltage
(Note 4) IL=500mA
4.0V≤VOUT≤5.2V
3.0V≤VOUT≤3.9V
2.5V≤VOUT≤2.9V
2.0V≤VOUT≤2.4V
1.8V≤VOUT≤1.9V
510
650
780
1100
1400
mV
Ground Current
IO=0.1mA~IMAX
1.8V≤VOUT≤3.9V
4.0V≤VOUT≤5.2V
VIN=5~8V
VIN=7~8V
65
65
90
90
µA
Note 1: Specifications are production tested at TA =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).
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.
4
AIC1723A
TYPICAL PERFORMANCE CHARACTERISTICS
0
50
100
150
200
250
300
350
400
450
0 100 200 300 400 500
A
IC1723
A
-52
VDROP vs. ILOAD
VDROP (mV)
ILOAD (mA)
T=50°C
T=80°C
T=25°C
T=-40°C
0100 200 300 400 500
0
100
200
300
400
500
600
A
IC1723A-33
VDROP vs. ILOAD
VDROP (mV)
ILOAD (mA)
T=50°C
T=80°C
T=25°C
T=-40°C
300
320
340
360
380
400
420
440
VDROP vs. Temperature
VDROP (mV)
Temperature (°C)
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
A
IC1723A-52
ILOAD=500mA
-40 -20 020 40 60 80
400
420
440
460
480
500
520
540
560
VDROP vs. Temperature
VDROP (mV)
A
IC1723A-33
Temperature (°C)
ILOAD=500mA
0 1 2 3 4 5 6 7 8
0
10
20
30
40
50
60
Ground Current vs. VIN
Ground Current (µA)
A
IC1723A-52
VIN (V)
0 1 2 3 4 5 6 7 8
0
10
20
30
40
50
60
70
Ground Current vs. VIN
Ground Current (µA)
A
IC1723A-33
VIN (V)
5
AIC1723A
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
-40 -20 0 20 40 60 80
40
45
50
55
60
65
70
75
80
A
IC1723
A
-33
Ground Current vs. Temperature
Ground Current (µA)
Temperature (°C)
ILOAD = 500mA
ILOAD = 300mA
ILOAD = 0mA
ILOAD = 100mA
Current Limit vs. Temperature
Current Limit (mA)
Temperature (°C)
-40 -20 020 40 60 80
660
680
700
720
740
760
780
800
820
VIN= 7V
A
IC1723A
VIN= 6V
VIN= 5V
VIN= 4V
-40 -20 0 20 40 60 80 100
5.00
5.05
5.10
5.15
5.20
5.25
5.30
VOUT vs. Temperature
VOUT (V)
Temperature (°C)
A
IC1723A-52
-40 -20 020 40 60 80 100
3.10
3.15
3.20
3.25
3.30
3.35
3.40
VOUT vs. Temperature
VOUT (V)
Temperature (°C)
A
IC1723A-33
BLOCK DIAGRAM
1.235V
Reference
GND
VOUT
VIN
Error
A
MP
+
-
Thermal
Shutdown
- +
Current
Limiting
6
AIC1723A
PIN DESCRIPTIONS
VOUT PIN - Output pin.
GND PIN - Power GND.
VIN PIN - Power Supply Input.
PHYSICAL DIMENSIONS (unit: mm)
SOT-23 (CU) (PU)
SYMBOL MIN MAX
A 0.95 1.45
A1 0.05 0.15
A2 0.90 1.30
b 0.30 0.50
c 0.08 0.22
D 2.80 3.00
E 2.60 3.00
E1 1.50 1.70
e 0.95 BSC
e1 1.90 BSC
L 0.30 0.60
L1 0.60 REF
E
D
E1
e1
e
A1
A
A
2
b
0.25
L1
L
θ
c
θ 0˚ 8˚
7
AIC1723A
TO-252 (CE) (PE)
SYMBOL MIN MAX
A 2.19 2.38
A1 0.00 0.13
b 0.64 0.89
b3 5.21 5.46
c 0.46 0.61
c2 0.46 0.58
D 5.33 6.22
E 6.35 6.73
e 2.28 BSC
H 9.40 10.41
L 1.40 1.78
L1 2.67 REF
L2 0.51 BSC
L3 0.89 2.03
L4 0.64 1.02
E
b3
c2
A1
H
D
L
b e
L3
L4
L1
θ
c
L2
θ 0° 8°
SOT-89 (CX) (PX)
SYMBOL MIN MAX
A 1.40 1.60
B 0.44 0.56
B1 0.36 0.48
C 0.35 0.44
D 4.40 4.60
D1 1.50 1.83
E 2.29 2.60
e 1.50 BSC
e1 3.00 BSC
H 3.94 4.25
B1
e
H
e1
D
D1
A
C
L
E
B
L 0.89 1.20
8
AIC1723A
SOT-223 (CY) (PY)
SYMBOL MIN MAX
A - 1.80
A1 0.02 0.10
A2 1.55 1.65
b 0.66 0.84
b2 2.90 3.10
c 0.23 0.33
D 6.30 6.70
E 6.70 7.30
E1 3.30 3.70
e 2.30 BSC
e1 4.60 BSC
L 0.90 -
θ 0° 8°
A
E1 E
D
b2
b
A1 e
A2
e1
0.25
L
θ
c
Note:
Information provided by AIC is believed to be accurate and reliable. However, we cannot assume responsibility for use of any
circuitry other than circuitry entirely embodied in an AIC product; nor for any infringement of patents or other rights of third parties
that may result from its use. We reserve the right to change the circuitry and specifications without notice.
Life Support Policy: AIC does not authorize any AIC product for use in life support devices and/or systems. Life support devices or
systems are devices or systems which, (I) are intended for surgical implant into the body or (ii) support or sustain life, and whose
failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected
to result in a significant injury to the user.
9