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AIC1734
300mA Low Dropout Linear Regulator
FEATURES
Low Dropout Voltage of 470mV at 300mA Output Current (3.0V Output Version). Guaranteed 300mA Output Current. Low Ground Current at 55A. 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 1F Output Capacitor for Stability. Current and Thermal Limiting.
DESCRIPTION
The AIC1734 is a 3-pin low dropout linear regulator. The superior characteristics of the AIC1734 include zero base current loss, very low dropout voltage, and 2% accuracy output voltage. Typical ground current remains approximately 55 A, for loading ranging from zero to maximum. Dropout voltage at 300mA output current is exceptionally low. Built-in output current limiting and thermal limiting provide maximal protection to the AIC1734 against fault conditions. The AIC1734 is available in popular SOT-23, SOT-89 and TO-92 packages.
APPLICATIONS
CD-ROM Drivers. LAN Cards. Microprocessor. RAM Module. Wireless Communication Systems. Battery Powered Systems.
TYPICAL APPLICATION CIRCUIT
VOUT
VIN
VIN
AIC1734
VOUT
+
1F CIN
GND
+
1F COUT
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-1734P-04 010405
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AIC1734
ORDERING INFORMATION
AIC1734-XXXXX XX PACKING TYPE TR: TAPE & REEL BG: BAG PACKAGE TYPE U: SOT-23 XA: SOT-89 XT: 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 33: 3.3V 35: 3.5V 37: 3.7V 38: 3.8V 50: 5.0V 52: 5.2V Example: AIC1734-18CXATR 1.8V Version, in SOT-89 Package & Tape & Reel Packing Type AIC1734-18PXATR 1.8V Version, in SOT-89 Lead Free Package & Tape & Reel Packing Type PIN CONFIGURATION SOT-23 (CU & PU) TOP VIEW 1: GND 2: VOUT 3: VIN
1 3
2
SOT-89 (CXA & PXA) TOP VIEW 1: GND 2. VIN 3. VOUT SOT-89 (CXT & PXT) TOP VIEW 1: VOUT 2. GND 3. VIN TO-92 (CZT & PZT) TOP VIEW 1: GND 2. VIN 3. VOUT TO-92 (CZL & PZL) TOP VIEW 1: VIN 2. GND 3. VOUT
1
2
3
1
2
3
1 2 3
1 2 3
SOT-23 MARKING
Part No. AIC1734-18XU AIC1734-20XU AIC1734-25XU AIC1734-27XU AIC1734-30XU AIC1734-33XU CU CD18 CD20 CD25 CD27 CD30 CD33 PU CD18P CD20P CD25P CD27P CD30P CD33P Part No. AIC1734-35XU AIC1734-37XU AIC1734-38XU AIC1734-50XU AIC1734-52XU CU CD35 CD37 CD38 CD50 CD52 PU CD35P CD37P CD38P CD50P CD52P
2
AIC1734
SOT-89 MARKING
Part No. AIC1734-18XXA AIC1734-20XXA AIC1734-25XXA AIC1734-27XXA AIC1734-30XXA AIC1734-33XXA AIC1734-35XXA AIC1734-37XXA AIC1734-38XXA AIC1734-50XXA AIC1734-52XXA CXA CA18 CA20 CA25 CA27 CA30 CA33 CA35 CA37 CA38 CA50 CA52 PXA CA18P CA20P CA25P CA27P CA30P CA33P CA35P CA37P CA38P CA50P CA52P Part No. AIC1734-18XXT AIC1734-20XXT AIC1734-25XXT AIC1734-27XXT AIC1734-30XXT AIC1734-33XXT AIC1734-35XXT AIC1734-37XXT AIC1734-38XXT AIC1734-50XXT AIC1734-52XXT CXT CB18 CB20 CB25 CB27 CB30 CB33 CB35 CB37 CB38 CB50 CB52 PXT CB18P CB20P CB25P CB27P CB30P CB33P CB35P CB37P CB38P CB50P CB52P
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage Operating Temperature Range Storage Temperature Range Maximum Junction Temperature Lead Temperature (Soldering) 10 sec. Thermal Resistance Junction to Ambient (Assume no Ambient Airflow, no Heatsink) SOT-89 Package TO-92 Package SOT-23 Package
-0.3 ~12V
-40C~ 85C -65C~150C 125C 260C 160C/W 150C/W 180C/W
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
TEST CIRCUIT
Refer to the TYPICAL APPLICATION CIRCUIT
3
AIC1734
ELECTRICAL CHARACTERISTICS
erwise specified.)
PARAMETER
(TA=25C, CIN=1F, COUT=1F, unless oth-
TEST CONDITIONS No Load AIC1734-52 AIC1734-50 AIC1734-38 AIC1734-37 AIC1734-35 AIC1734-33 AIC1734-30 AIC1734-27 AIC1734-25 AIC1734-20 AIC1734-18 (Note 1) IL=1mA, 1.4VVOUT3.2V 3.3VVOUT5.2V IL=0.1~300mA 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=4V~12V VIN=5.5V~12V VIN=5V VIN=7V VIN=5.5~12V VIN=5.5~12V VIN=4.1~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V 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 3 3 7 15
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 Load Regulation (Note 2) Current Limit (Note 3) Dropout Voltage (Note 4)
PPM/C 10 10 20 40 mV
mV mA
300 400 470 570 800 1260 55 55 80 80
IL=300mA
mV
Ground Current
IO=0.1mA~IMAX 1.4VVOUT3.9V 4.0VVOUT5.2V
A
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. Specifications are guaranteed by Statistical Quality Controls (SQC), with no production test proved, when operating temperature ranges from -40C to 85C.
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AIC1734
TYPICAL PERFORMANCE CHARACTERISTICS
5.40 5.35 5.30 3.50
AIC1734-52
3.45 3.40
AIC1734-33
V OUT (V)
V OUT (V)
5.25 5.20 5.15 5.10 5.05 5.00 -50 -30 -10 10 30 50 70 90
3.35 3.30 3.25 3.20 3.15 3.10 -50 -30 -10 10 30 50 70 90
Temperature (C)
Temperature (C)
Fig. 1
50
VOUT vs. Temperature
48
Fig. 2
VOUT vs. Temperature
AIC1734-52
AIC1734-33
Ground Current (A)
46 44 42 40
Ground Current (A)
48
ILOAD=300mA
46
ILOAD=300mA
44
42
ILOAD=100mA ILOAD= 0mA
0 10 20 30 40 50 60 70 80 90
40
ILOAD=100mA ILOAD= 0mA
38 -40 -30 -20 -10
38 -40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90
Temperature (C)
Temperature (C)
Fig. 3
60
Ground Current vs. Temperature
60
Fig. 4
Ground Current vs. Temperature
AIC1734-52
AIC1734-33
Ground Current (A)
40 30 20 10 0
Ground Current (A)
0 1 2 3 4 5 6 7 8 9 10 11 12
50
50 40 30 20 10 0
VIN (V)
0
1
2
3
4
VIN (V)
5
6
7
8
9
10
11
12
Fig. 5
Ground Current vs. VIN
Fig. 6
Ground Current vs. VIN
5
AIC1734
TYPICAL PERFORMANCE CHARACTERISTIC
500 450 400 600
(Continued)
AIC1734-52
T= 80C
500
AIC1734-33 T= 80C T= 50C T= 20C
VDROP (mV)
VDROP (mV)
350 300 250 200 150 100 50 00
T= 50C T= 20C T=-40C
400 300 200
T=-40C
100 0
50
100
150
ILOAD (mA)
200
250
300
350
400
0
50
100
150
ILOAD (mA)
200
250
300
350
400
Fig. 7
VDROP vs. ILOAD
Fig. 8
VDROP vs. ILOAD
500 490 480
AIC1734 VIN = 8V VIN = 7V
Crrent Limit (mA)
470 460 450 440 430 420 410 400 -40
VIN = 6V VIN = 5V
-20 0
Temperature (C)
20
40
60
80
Fig. 9
Current Limit vs. Temperature
6
AIC1734
BLOCK DIAGRAM
VIN VOUT
CURRENT LIMITING
ERROR AMP THERMAL SHUTDOWN
+
+
1.235V Reference
-
GND
PIN DESCRIPTIONS
VOUT PIN - Output pin. GND PIN - Power GND. VIN PIN - Power Supply Input.
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AIC1734
PHYSICAL DIMENSIONS
SOT-23
D e
(unit: mm)
S Y M B O L
SOT-23 MILLIMETERS 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 8 0.60 MAX. 1.45 0.15 1.30 0.50 0.22 3.00 3.00 1.70
A
E1
A1 A2 b c
A
A
e1
E
SEE VIEW B
D E
b A2
WITH PLATING
E1 e
A
c
e1 L L1
BASE METAL SECTION A-A
A1
0.25 L L1 VIEW B
GAUGE PLANE SEATING PLANE
SOT-89
D D1 A C
S Y M B O L
SOT-89 MILLIMETERS 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 4.25 1.20 MAX. 1.60 0.56 0.48 0.44 4.60 1.83 2.60
A
H
B B1 C
L
E
D D1
e e1
E e e1 H L
B1
B
8
AIC1734
TO-92
S Y M B O L
TO-92 MILLIMETERS MIN. 4.32 0.36 4.45 3.18 2.42 1.15 3.43 12.70 2.03 2.66 MAX. 5.33 0.47 5.20 4.19 2.66 1.39
A b D E e e1 j L S
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.
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