AIC1740-30CF [AIC]
Low Output Voltage, 500mA Low Dropout Linear Regulator; 低输出电压， 500毫安低压差线性稳压器
| 型号： | AIC1740-30CF |
| 厂家： | 
ANALOG INTERGRATIONS CORPORATION |
| 描述： | Low Output Voltage, 500mA Low Dropout Linear Regulator |
| 文件： | 总7页 (文件大小：119K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AIC1740
Low Output Voltage, 500mA Low Dropout
Linear Regulator
n FEATURES
n DESCRIPTION
l
Low Dropout Voltage of 900mV at 500mA
Output Current (3.0V Output Version).
The AIC1740 is a 3-pin low dropout linear
regulator. The superior characteristics of the
AIC1740 include zero base current loss, very
low dropout voltage, and 2% accuracy output
voltage. Typical ground current remains
approximately
l
l
Guaranteed 500mA Output Current.
Internal 1.5W P-MOSFET Draws no Base
Current.
l
l
Low Ground Current at 65mA.
2% Accuracy Output Voltage of 1.8V/ 2.0V/
2.5V/ 2.7V/ 3.0V.
l
l
l
Input Voltage Range up to 12V.
Needs only 4.7mF for Stability.
Current and Thermal Limiting.
65mA, from no load to maximum loading
conditions. Dropout voltage is exceptionally low.
Output current limiting and thermal limiting are
built in to provide maximal protection to the
AIC1740 against fault conditions.
n APPLICATIONS
l
l
l
l
l
l
Voltage Regulator for CD-ROM Drivers.
The AIC1740 comes in the popular SOT-223,
TO-251 and TO-252 packages.
Voltage Regulator for LAN Cards.
Voltage Regulator for Monitor Microprocessor.
Voltage Regulator for RAM Module.
Wireless Communication Systems.
Battery Powered Systems.
TYPICAL APPLICATION CIRCUIT
n
VIN
VOUT
AIC1740
VIN
VOUT
GND
+
+
m
COUT
10 F
m
CIN
1 F
Low Dropout Linear Regulator
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-1740-00 Aug 2, 00 TEL: 886-3-5772500 FAX: 886-3-5772510
www.analog.com.tw
2
AIC1740
n ORDERING INFORMATION
AIC1740-XCX
ORDER NUMBER
PIN CONFIGURATION
FRONT VIEW
AIC1740-18CE
AIC1740-20CE
AIC1740-25CE
AIC1740-27CE
AIC1740-30CE
(TO-252)
PACKAGING TYPE
E: TO-252
F: TO-251
1: VOUT
2: GND
3: VIN
Y: SOT-223
1 2 3
OUTPUT VOLTAGE
18: 1.8V
AIC1740-18CF
AIC1740-20CF
AIC1740-25CF
AIC1740-27CF
AIC1740-30CF
(TO-251)
20: 2.0V
25: 2.5V
27: 2.7V
30: 3.0V
FRONT VIEW
1: VOUT
2: GND
1 2 3
3: VIN
AIC1740-18CY
AIC1740-20CY
AIC1740-25CY
AIC1740-27CY
AIC1740-30CY
(SOT-223)
FRONT VIEW
1: VOUT
2: GND
3: VIN
1
2
3
n ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage ...................................………….................................... -0.3~12V
Operating Junction Temperature Range .......……….............................. -40°C~ 85°C
Storage Temperature Range .........................………….......................... -65°C~150°C
Power Dissipation ....…………………………………..……………..……............... 0.85W
Thermal Resistance qJC
TO-251, TO-252 Package ....…….…….......... 12.5°C/W
SOT-223 Package ....…………..……….............15°C/W
n TEST CIRCUIT
Refer to the TYPICAL APPLICATION CIRCUIT
2
AIC1740
n ELECTRICAL CHARACTERISTICS (Ta=25°C, C =1mF, COUT=10mF, unless otherwise
IN
specified.)
PARAMETER
Output Voltage
TEST CONDITIONS
MIN.
TYP.
MAX.
UNIT
No Load
AIC1740-30
AIC1740-27
AIC1740-25
AIC1740-20
AIC1740-18
(Note 1)
VIN=4.0~12V
2.940
2.646
2.450
1.960
1.764
3.0
2.7
2.5
2.0
1.8
50
3.060
2.754
2.550
2.040
1.836
VIN=4.0~12V
VIN=4.0~12V
VIN=4.0~12V
VIN=4.0~12V
V
Output Voltage
Temperature
Coefficiency
Line Regulation
Load Regulation
(Note 2)
PPM/°C
IL=1mA, VIN=4.0~12V
VIN=5V, IL=0.1~500mA
3
10
50
mV
mV
20
Current Limit
(Note 3)
VIN=5V, VOUT=0V
650
mA
mV
Dropout Voltage
(Note 4)
AIC1740s
IL=0.1mA
IL=500mA
0.2
900
10
AIC1740-30
AIC1740-27
AIC1740-25
AIC1740-20
AIC1740-18
1050
1100
1150
1410
1520
950
mV
1000
1260
1370
Ground Current
IO=0.1mA~IMAX, VIN=4V~12V
65
90
mA
Note 1: Guaranteed by design.
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.
3
AIC1740
TYPICAL PERFORMANCE CHARACTERISTICS
n
Load Transient Response
Dropout Voltage vs Load Current
VOUT=1.8V
1400
1300
1200
1100
1000
900
m
COUT=1 F
VOUT=3.0V
VOUT
VOUT=2.0V
200mV/DIV
800
700
VOUT=2.5V
VOUT=2.7V
IOUT=250mA
600
500
400
IOUT
IOUT=0.1mA
VOUT=3.0V
300
200
100
0
0
50
100
150
200 250
300
350
400 450
500
Load Current (mA)
Time (0.5mS/DIV)
Load Transient Response
Line Transient Response
m
COUT=1 F
m
COUT=10 F
IL=1mA
VIN=6V
VOUT=3.0V
VOUT
VIN
VIN=4.0V
50mV/DIV
IOUT=250mA
IOUT=0.1mA
IOUT
VOUT=3.0V
VOUT
20mV/DIV
Time (1mS/DIV)
Time (0.25mS/DIV)
Recommended Max. Output Current vs Input Voltage
600
550
500
450
400
350
300
250
200
150
100
50
3.0V
2.7V
2.5V
1.8V
2.0V
0
3
4
5
6
7
8
9
10
11
12
Input voltage (V)
4
AIC1740
n BLOCK DIAGRAM
VIN
VOUT
CURRENT
LIMITING
ERROR
AMP
THERMAL
SHUTDOWN
+
-
+
-
1.235V
Reference
GND
n PIN DESCRIPTION
VOUT PIN - Output pin.
GND PIN - Power GND.
VIN PIN - Power Supply Input.
APPLICATION INFORMATIONS
A 4.7mF (or greater) capacitor is required between
the AIC1740 output and ground for stability.
Without this capacitor the part will oscillate. Even
though most types of capacitor may work, the
equivalent series resistance (ESR) should be held
to 5W or less if Aluminum electrolytic type is used.
Many Aluminum electrolytics have electrolytes that
freeze at about -30°C, so solid tantalums are
n
recommended for operation below -25°C. The
value of this capacitor may be increased without
limit.
A 0.1mF capacitor (or greater) should be placed
from the AIC1740 input to ground if the lead
inductance between the input and power source
exceeds 500nH (approximately 10 inches of trace).
5
AIC1740
PHYSICAL DIMENSIONS
n
l
TO-251 (unit: mm)
E
SYMBOL
MIN
2.19
1.02
0.55
5.21
0.46
0.46
5.33
6.35
MAX
2.38
1.27
0.89
5.46
0.58
0.58
5.59
6.73
A
A
A1
b
b2
C1
D
b2
C
C1
D
E
e
L
C
2.28 (TYP.)
7.62 (TYP.)
L
b
A1
e
l
TO-252 (unit: mm)
E
SYMBOL
MIN
MAX
2.38
1.27
0.88
5.46
0.58
5.59
6.73
C1
b2
A
A1
b
2.19
1.02
0.64
5.21
0.46
5.33
6.35
A
b2
C1
D
D
H
E
L
e
2.28 (TYP.)
e
H
9.40
0.51
10.42
-
b
A1
L
6
AIC1740
l
SOT-223 (unit: mm)
SYMBOL
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
D
A1
B
B1
°
° ±
13
3
B1
C
E
H
e
A1
D
B
E
3 (PLCS)
° ±
°
3
13
e
2.30 (TYP.)
H
6.70
7.30
C
0.91 MIN
°
0
°
~ 10
° ±
°
3
13
l SOT-223 MARKING
Part No.
Marking
AZ18
AIC1740-18
AIC1740-20
AIC1740-25
AIC1740-27
AIC1740-30
AZ20
AZ25
AZ27
AZ30
7
相关型号：
©2020 ICPDF网 联系我们和版权申明