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AIC1735
500mA Low Dropout Linear Regulator
n FEATURES
l
n DESCRIPTION
The AIC1735 is a 3-pin low dropout linear regulator. The superior characteristics of the AIC1735 include zero base current loss, very low dropout voltage, and 2% accuracy output voltage. Typical ground current from no remains load to approximately 65 A,
Low Dropout Voltage of 650mV at 500mA Output Current (3V Output Version). Guaranteed 500mA Output Current. 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.
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maximum loading conditions. Dropout voltage at 100mA output current is exceptionally low. Output current limiting and thermal limiting are built in to provide maximal protection to the AIC1735 against fault conditions. The AIC1735 comes with the popular SOT223 and TO-252 packages.
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Needs only 4.7F for Stability. Current and Thermal Limiting.
n APPLICATIONS
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Voltage Regulator for CD-ROM Drivers. Voltage Regulator for LAN Cards. Voltage Regulator for Microprocessor. Voltage Regulator for RAM Module. Wireless Communication Systems. Battery Powered Systems.
n TYPICAL APPLICATION CIRCUIT
VIN V IN AIC1735 VOUT VOUT
+
1F CIN
GND
+
4.7F COUT
Low Dropout Linear Regulator
Analog Integrations Corporation
4F, 9 Industry E. 9th Rd, Science-Based Industrial Park, Hsinchu, Taiwan TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw
DS-1735-01 040902
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AIC1735
n ORDERING INFORMATION
AIC1735-XXCX XX PACKING TYPE TR: TAPE & REEL TB: TUBE PACKAGE TYPE E: TO-252 Y: SOT-223 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: AIC1735-18CETR a 1.8V Version, in TO-252 Package & Tape & Reel Packing Type PIN CONFIGURATION TO-252 (CE) TOP VIEW 1: VOUT 2. GND 3. VIN SOT-223 (CY) TOP VIEW 1: VOUT 2. GND 3. VIN
1
2
3
1
2
3
n ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage...................................................... ... ... ... ..... ... .................. -0.3~12V Operating Junction Temperature Range ........ ... ... ........... ... ... ... ................ -40C~ 85C Storage Temperature Range ....................... ... ......................... ... ... ............. -65C~150C Thermal Resistance JC TO-252 Package ...... .... ... ... ..... 12.5C/W
SOT-223 Package ........ ... ... ........ 15C/W
n TEST CIRCUIT
Refer to the TYPICAL APPLICATION CIRCUIT
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AIC1735
n ELECTRICAL CHARACTERISTICS (T A=25C, CIN=1F, COUT=4.7F, unless
otherwise specified.)
PARAMETER
TEST CONDITIONS
No Load AIC1735-52 AIC1735-50 AIC1735-38 AIC1735-37 AIC1735-35 AIC1735-33 AIC1735-30 AIC1735-27 AIC1735-25 AIC1735-20 AIC1735-18 (Note 1) IL=1mA, 1.4VVOUT3.2V 3.3VVOUT5.2V IL=0.1~500mA 1.4VVOUT3.9V 4.0VVOUT5.2V VIN =7V, VOUT=0V 4.0VVOUT5.2V 3.0VVOUT3.9V 2.5VVOUT2.9V 2.0VVOUT2.4V 1.4VVOUT1.9V VIN=5~12V VIN=7~12V VIN=5.5~12V VIN=5.5~12V VIN=4.7~12V VIN=4.7~12V VIN=4.7~12V VIN=4.7~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V
MIN.
5.100 4.900 3.725 3.625 3.430 3.235 2.940 2.646 2.450 1.960 1.764
TYP.
5.200 5.000 3.800 3.700 3.500 3.300 3.000 2.700 2.500 2.000 1.800 50
MAX.
5.300 5.100 3.875 3.775 3.570 3.365 3.060 2.754 2.550 2.040 1.836
UNIT
Output Voltage
V
Output Voltage Temperature Coefficiency Line Regulation
PPM/C
VIN=4V~12V VIN=5.5V~12V VIN=5V VIN=7V 500
3 3 10 20
10 10 30 50
mV
Load Regulation (Note 2) Current Limit (Note 3)
mV
mA 510 650 780 1100 1400 65 65 90 90
Dropout Voltage (Note 4)
IL=500mA
mV
Ground Current
IO=0.1mA~IMAX 1.4VVOUT3.9V 4.0VVOUT5.2V
A
Note 1: Note 2: Note 3: Note 4:
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.
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AIC1735
n TYPICAL PERFORMANCE CHARACTERISTICS
500
600
AIC1735-52
400
AIC1735-33
500
VDROP (mV)
300
VDROP (mV)
150 200 250 300 350 400 450 500
T=25C
T=25 C
400
300
200
200
100
100
0 0 50 100
0 0 50 100 150 200 250 300 350 400 450 500
I LOAD (mA)
VDROP vs. ILOAD
480 460 440 640
ILOAD (mA) VDROP vs. ILOAD
AIC1735-52 ILOAD =500mA
VDROP (mV)
620 600 580 560 540 520
AIC1735-33 ILOAD =500mA
VDROP (mV)
420 400 380 360 340 320 -40 -30 -20 -10
500 480 0 10 20 30 40 50 60 70 80 460 -40 -20 0 20 40 60 80
Temperature (C)
VDROP vs. Temperature
46.0
46.0
Temperature (C) VDROP vs. Temperature
AIC1735-52
Ground Current (A)
T=25C
45.0 44.5 44.0 43.5
Ground Current (A)
45.5
45.5
AIC1735-33 T=25C
45.0
44.5
44.0
43.5
43.0 0
50
100
150
200
250
300
350
400
450
500
43.0 0
50
100
150
200
250
300
350
400
450
500
ILOAD (mA)
ILOAD (mA)
Ground Current vs. ILOAD
Ground Current vs. ILOAD
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AIC1735
n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
46 46.0
AIC1735-52 Ground Current (A) Ground Current (A)
20 40 60 80 45
AIC1735-33
45.5
ILOAD = 500mA
44
ILOAD = 500mA
45.0
43
44.5
42
44.0
41
43.5
40 -40
-20
0
43.0 -40
-20
0
20
40
60
80
Temperature (C)
Temperature (C)
Ground Current vs. Temperature
700 690 680
Ground Current vs. Temperature
AIC1735
VIN = 7V VIN = 6V VIN = 5V
Current Limit (mA)
670 660 650 640 630 620 610 600 590 580 -40 -20 0 20 40 60 80
Temperature (C)
Current Limit vs. Temperature
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AIC1735
n BLOCK DIAGRAM
VIN VOUT
CURRENT LIMITING
ERROR AMP THERMAL SHUTDOWN
-
+
1.235V Reference
-
GND
n PIN DESCRIPTION
VOUT PIN - Output pin. GND PIN VIN PIN - Power GND. - Power Supply Input.
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AIC1735
n PHYSICAL DIMENSIONS
l TO-252 (unit: mm)
E b2 C1 A
SYMBOL A A1 b
MIN 2.19 1.02 0.64 5.21 0.46 5.33 6.35
MAX 2.38 1.27 0.88 5.46 0.58 5.59 6.73
D
b2
H
C1 D E
L
e H L
2.28 (TYP.) 9.40 0.51 10.42 -
b
e
A1
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SOT-223 (unit: mm)
D 1.80 MAX B1 13 3
SYMBOL A1 B B1
E H e A1
MIN 0.02 0.60 2.90 0.24 6.30 3.30
MAX 0.12 0.80 3.15 0.35 6.80 3.70
C D E
B 3 (PLCS) 13 3
e
C
2.30 (TYP.) 6.70 7.30
H
0.91 MIN 13 3
0 ~ 10
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SOT-223 MARKING
Part No. AIC1735-18CY AIC1735-20CY AIC1735-25CY AIC1735-27CY AIC1735-30CY AIC1735-33CY Marking CC18 CC20 CC25 CC27 CC30 CC33 Part No. AIC1735-35CY AIC1735-37CY AIC1735-38CY AIC1735-50CY AIC1735-52CY Marking CC35 CC37 CC38 CC50 CC52
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