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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 65A. 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 4.7F 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 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 SOT23, 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
VIN
VIN
VOUT
AIC1723A
VOUT
+
1F CIN
GND
+
4.7F COUT
Low Dropout Linear Regulator (CIN and COUT 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
ORDERING INFORMATION
AIC1723A-XXXX XX 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 Example: AIC1723A-18CETR Packing Type AIC1723A-18PYTR 1.8V Version, in SOT-223 Lead Free Package & Tape & Reel Packing Type PIN CONFIGURATION SOT-23 (CU & PU) TOP VIEW 1: GND 2: VOUT 3: VIN
3
1
2
TO-252 (CE & PE) TOP VIEW 1: VOUT 2. GND 3. VIN SOT-89 (CX & PX) TOP VIEW 1: GND 2. VIN 3. VOUT
1
2
3
1
2
3
SOT-223 (CY & PY) TOP VIEW 1: VOUT 2. GND 3. VIN 1
2
3
1.8V Version, in TO-252 Package & Tape & Reel
SOT-23 MARKING
Part No. AIC1723A-18XU AIC1723A-20XU AIC1723A-25XU AIC1723A-27XU AIC1723A-30XU AIC1723A-33XU CU BT18 BT20 BT25 BT27 BT30 BT33 PU BT18P BT20P BT25P BT27P BT30P BT33P Part No. AIC1723A-35XU AIC1723A-37XU AIC1723A-38XU AIC1723A-50XU AIC1723A-52XU CU BT35 BT37 BT38 BT50 BT52 PU BT35P BT37P BT38P BT50P BT52P
2
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 ................................................................. -40C~ 85C Junction Temperature ................................................................................. 125C Storage Temperature Range ...................................................................... -65C~150C Lead Temperature (Soldering. 10sec) ............................................................ 260C Thermal Resistance Junction to Ambient (Assume no Ambient Airflow, no Heatsink) SOT-23 Package ..................... 180C/W TO-252 Package ..................... 100C/W
SOT-89 Package ..................... 160C/W SOT-223 Package ..................... 155C/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)
(TA=25C, CIN=1F, COUT=4.7F, 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 IL=1mA, 1.8VVOUT3.2V 3.3VVOUT5.2V IL=0.1~500mA 1.8VVOUT3.9V 4.0VVOUT5.2V VIN=7V, VOUT=0V 4.0VVOUT5.2V 3.0VVOUT3.9V 2.5VVOUT2.9V 2.0VVOUT2.4V 1.8VVOUT1.9V VIN=5~8V VIN=7~8V
MIN.
TYP.
MAX.
UNIT
Output Voltage
VIN=8V
-2
+2
%
Line Regulation
VIN=4V~8V VIN=5.5V~8V VIN=5V VIN=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
IL=500mA
510 650 780 1100 1400 65 65 90 90
mV
Ground Current
IO=0.1mA~IMAX 1.8VVOUT3.9V 4.0VVOUT5.2V
A
Note 1: Note 2: Note 3: Note 4:
Specifications are production tested at TA =25C. Specifications over the -40C to 85C 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
AIC1723A
TYPICAL PERFORMANCE CHARACTERISTICS
450 400 600
AIC1723A-52
T=80C
T=50C
500
AIC1723A-33
T=80C T=50C T=25C
VDROP (mV)
350 300 250 200 150 100 50 0 0 100
VDROP (mV)
400 300 200
T=25C T=-40C
T=-40C 100 0
200
300
400
500
0
100
200
300
400
500
ILOAD (mA)
ILOAD (mA)
VDROP vs. ILOAD
440 420
560
VDROP vs. ILOAD
AIC1723A-52 ILOAD=500mA
VDROP (mV)
540 520 500 480 460 440 420 400
AIC1723A-33 ILOAD=500mA
VDROP (mV)
400 380 360 340 320 300
-40 -30 -20 -10 0
10 20 30 40 50 60 70 80
-40
-20
0
20
40
60
80
Temperature (C)
VDROP vs. Temperature
70 60
Temperature (C) VDROP vs. Temperature
Ground Current (A)
50 40 30 20 10 0
Ground Current (A)
AIC1723A-52
60 50 40 30 20 10 0
AIC1723A-33
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
7
8
Ground Current vs. VIN
VIN (V)
Ground Current vs. VIN
VIN (V)
5
AIC1723A
TYPICAL PERFORMANCE CHARACTERISTICS
80 820
(Continued)
VIN= 7V
Ground Current (A)
75 70 65 60 55 50 45 40
AIC1723A-33
Current Limit (mA)
ILOAD = 500mA
800 780 760 740 720 700 680 80 660 -40
AIC1723A
ILOAD = 300mA
VIN= 6V VIN= 5V
ILOAD = 0mA ILOAD = 100mA -40 -20 0 20 40 60
VIN= 4V
-20 0 20 40 60 80
Temperature (C)
Temperature (C)
Ground Current vs. Temperature
5.30 5.25 5.20 5.15 5.10 5.05 5.00
3.40
Current Limit vs. Temperature
AIC1723A-52
VOUT (V)
3.35 3.30 3.25 3.20 3.15 3.10
AIC1723A-33
VOUT (V)
-40
-20
0
20
40
60
80
100
-40
-20
0
20
40
60
80
100
Temperature (C) VOUT vs. Temperature
Temperature (C) VOUT vs. Temperature
BLOCK DIAGRAM
VIN Current Limiting
+
VOUT
Error AMP
+
1.235V Reference
Thermal Shutdown
-
GND
6
AIC1723A
PIN DESCRIPTIONS
VOUT PIN - Output pin. GND PIN - Power GND. VIN PIN - Power Supply Input.
PHYSICAL DIMENSIONS
SOT-23 (CU) (PU)
D
(unit: mm)
SYMBOL A
0.25
MIN 0.95 0.05 0.90 0.30 0.08 2.80 2.60 1.50 0.95 BSC 1.90 BSC 0.30 0.60 REF 0
MAX 1.45 0.15 1.30 0.50 0.22 3.00 3.00 1.70
A1 A2 b c D E E1 e
E1 e e1
E
L L1 c
A2
A A1 b
e1 L L1
0.60 8
7
AIC1723A
TO-252 (CE) (PE)
E b3 L3 c2 A
SYMBOL A A1 b b3 c c2 D E e H L L1 L2 L3 L4
MIN 2.19 0.00 0.64 5.21 0.46 0.46 5.33 6.35
MAX 2.38 0.13 0.89 5.46 0.61 0.58 6.22 6.73 2.28 BSC 10.41 1.78 2.67 REF 0.51 BSC
D
H
L4
L1
c
L
A1
b
e
L2
9.40 1.40
0.89 0.64 0
2.03 1.02 8
SOT-89 (CX) (PX)
D D1 C A
SYMBOL A B B1 C
MIN 1.40 0.44 0.36 0.35 4.40 1.50 2.29 1.50 BSC 3.00 BSC 3.94 0.89
MAX 1.60 0.56 0.48 0.44 4.60 1.83 2.60
H E
D D1 E
L e e1 B B1
e e1 H L
4.25 1.20
8
AIC1723A
SOT-223 (CY) (PY)
D b2 A A1 E1 E e1 e A2
SYMBOL A A1 A2 b b2 c
0.25 c L
MIN 0.02 1.55 0.66 2.90 0.23 6.30 6.70 3.30
MAX 1.80 0.10 1.65 0.84 3.10 0.33 6.70 7.30 3.70 2.30 BSC 4.60 BSC
b
D E E1 e e1 L
0.90 0
8
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

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