AIC AIC1739-30CX 300ma low dropout linear regulator Datasheet

AIC1739
300mA Low Dropout Linear Regulator
n FEATURES
n DESCRIPTION
Low Dropout Voltage of 180mV at 100mA
The AIC1739 is a 3-pin low dropout linear
Output Current (3.0V Output Version).
regulator. The superior characteristics of the
l
Guaranteed 300mA Output Current.
AIC1739 include zero base current loss, very
l
Internal 1.3Ω
low dropout voltage, and 2% accuracy output
l
P-MOSFET Draws no Base
Current.
voltage.
Typical
ground
l
Low Ground Current at 55µA.
approximately
l
2% Accuracy Output Voltage of 1.8V/ 2.0V/
maximum loading conditions. Dropout voltage
2.5V/ 2.7V/ 3.0V.
is exceptionally low. Output current limiting
l
Input Voltage Range up to 12V.
and thermal limiting are built in to provide
l
Needs only 1µF for Stability.
maximal protection to the AIC1739 against
l
Current and Thermal Limiting.
fault conditions.
55µA,
current
from
no
remains
load
to
The AIC1739 comes in the popular 3-pin
n APPLICATIONS
SOT-89 and TO-92 packages.
l
Voltage Regulator for CD-ROM Drivers.
l
Voltage Regulator for LAN Cards.
l
Voltage Regulator for Microprocessor.
l
Wireless Communication Systems.
l
Battery Powered Systems.
n TYPICAL APPLICATION CIRCUIT
VIN
VOUT
AIC1739
V IN
+
1µ F
C IN
GND
V OUT
+
10µ F
C OUT
Low Dropout Linear Regulator
Analog Integrations Corporation
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-1739-01
TEL: 886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
1
AIC1739
n ORDERING INFORMATION
AIC1739-XCX
ORDER NUMBER
PACKAGING TYPE
X:
SOT89
ZT:
TO92
ZL:
TO92
OUTPUT VOLTAGE
18: 1.8V
20: 2.0V
25: 2.5V
27: 2.7V
30: 3.0V
PIN CONFIGURATION
AIC1739-18CX
AIC1739-20CX
AIC1739-25CX
AIC1739-27CX
AIC1739-30CX
(SOT-89)
FRONT VIEW
AIC1739-18CZT
AIC1739-20CZT
AIC1739-25CZT
AIC1739-27CZT
AIC1739-30CZT
(TO-92)
TOP VIEW
AIC1739-18CZL
AIC1739-20CZL
AIC1739-25CZL
AIC1739-27CZL
AIC1739-30CZL
(TO-92 L TYPE)
1: VOUT
2: GND
3: VIN
1
2
3
1
1: GND
2: VIN
3: VOUT
2
3
TOP VIEW
1
1: VIN
2: GND
3: VOUT
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
SOT-89 Package ....… ...… ................. 0.5W
TO-92 Package .....… … … … ............. 0.5W
n TEST CIRCUIT
Refer to the TYPICAL APPLICATION CIRCUIT
n
ELECTRICAL CHARACTERISTICS (Ta=25°C, CIN=1µF, C OUT=10µF, unless
otherwise specified.)
PARAMETER
Output Voltage
Output Voltage
Temperature
Coefficiency
TEST CONDITIONS
No Load
AIC1739-30
AIC1739-27
AIC1739-25
AIC1739-20
AIC1739-18
(Note 1)
VIN=4.0~12V
VIN=4.0~12V
VIN=4.0~12V
VIN=4.0~12V
VIN=4.0~12V
MIN.
TYP.
MAX.
UNIT
2.940
2.646
2.550
1.960
1.764
3.000
2.700
2.500
2.000
1.800
50
3.060
2.754
2.550
2.040
1.836
150
V
PPM/°C
2
AIC1739
n ELECTRICAL CHARACTERISTICS (Continued)
PARAMETER
Line Regulation
TEST CONDITIONS
IL=1mA
Load Regulation
(Note 2)
Current Limit
(Note 3)
TYP.
MAX.
UNIT
VIN=4.0~12V
3
10
mV
VIN=5V, IL=0.1~300mA
7
25
mV
VIN=5V, VOUT=0V
Dropout Voltage
(Note 4)
Ground Current
Note 1:
Note 2:
Note 3:
Note 4:
MIN.
320
440
mA
AIC1739s
AIC1739-30
AIC1739-27
AIC1739-25
AIC1739-20
AIC1739-18
IL=0.1mA
IL=300mA
IL=300mA
IL=300mA
IL=300mA
IL=300mA
0.2
540
570
610
820
920
10
640
670
710
970
1070
mV
IO=0.1mA~IMAX
VIN=4~12V
55
80
µA
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.
n TYPICAL
PERFORMANCE CHARACTERISTICS
Load Transient Response
Dropout Voltage vs Load Current
1000
900
800
Dropout Voltage (mV)
COUT=1µF
V OUT=1.8V
V OUT=2.0V
VOUT =3.0V
VOUT
700
100mV/DIV
600
500
400
V OUT =2.5V
300
IOUT=150mA
VOUT=2.7V
IOUT
VOUT =3.0V
200
IOUT=0.1mA
100
0
0
50
100
150
200
Load Current (mA)
250
300
Time (0.5mS/DIV)
3
AIC1739
n TYPICAL
PERFORMANCE CHARACTERISTICS (Continued)
Line Transient Response
Load Transient Response
COUT =1µ F
I L=1mA
C OUT =10µF
VIN =6V
20mV/DIV
VOUT=3.0V
VOUT
VIN
VIN =4.0V
IOUT=150mA
I OUT =0.1mA
VOUT
VOUT=3.0V
I OUT
20mV/DIV
Time (1mS/DIV)
Time (0.5mS/DIV)
Recommended max. Output Current vs. Input voltage
400
Dropout Voltage (mV)
350
300
3.0V
2.7V
2.5V
250
200
1.8V
2.0V
150
100
50
0
3
4
5
6
7
8
9
10
11
12
Input Voltage (V)
n BLOCK DIAGRAM
VIN
VOUT
CURRENT
LIMITING
ERROR
AMP
-
-
+
THERMAL
SHUTDOWN
1.235V
Reference
GND
4
AIC1739
n PIN DESCRIPTION
VOUT PIN - Output pin.
GND PIN - Power GND.
VIN PIN
- Power Supply Input.
n APPLICATION INFORMATIONS
A 1µF (or greater) capacitor is required between
value of this capacitor may be increased without
the AIC1739 output and ground for stability.
limit.
Without this capacitor the part will oscillate. Even
though most types of capacitor may work, the
A 0.1µF capacitor (or greater) should be placed
equivalent series resistance (ESR) should be held
from the AIC1739 input to ground if the lead
to 5Ω or less if Aluminum electrolytic type is used.
inductance between the input and power source
Many Aluminum electrolytics have electrolytes
exceeds 500nH (approximately 10 inches of trace).
that freeze at about -30°C, so solid tantalums are
recommended for operation below -25°C. The
n PHYSICAL DIMENSIONS
l SOT-89 (unit: mm)
A
D
D1
C
H
E
L
B
e
e1
SYMBOL
MIN
MAX
A
1.40
1.60
B
0.36
0.48
C
0.35
0.44
D
4.40
4.60
D1
1.62
1.83
E
2.29
2.60
e
1.50 (TYP.)
e1
3.00 (TYP.)
H
3.94
4.25
L
0.89
1.20
SOT-89 MARKING
Part No.
AIC1739-18
AIC1739-20
AIC1739-25
AIC1739-27
AIC1739-30
Marking
AY18
AY20
AY25
AY27
AY30
5
AIC1739
l TO-92 (unit: mm)
A
E
L
C
e1
D
SYMBOL
MIN
MAX
A
4.32
5.33
C
0.38 (TYP.)
D
4.40
5.20
E
3.17
4.20
e1
L
1.27 (TYP.)
12.7
-
6
Similar pages