CJA1117B-XXX [JCST]
1A LOW DROPOUT LINEAR REGULATOR;
| 型号： | CJA1117B-XXX |
| 厂家： | 
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD |
| 描述： | 1A LOW DROPOUT LINEAR REGULATOR |
| 文件： | 总6页 (文件大小：1678K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
1A LOW DROPOUT LINEAR REGULATOR
CJA1117B-XXX
SOT-89-3L
FEATURES
Low Dropout Voltage: 1.15V at 1A Output Current
Trimmed Current Limit
1. ADJ/GND
2. OUTPUT
3.IN
On-Chip Thermal Shutdown
Three-Terminal Adjustable or Fixed 1.8V, 2.5V, 3.3V, 5V
Operation Junction Temperature: -25 ℃ to 125℃
GENERAL DESCRIPTION
The CJA1117B-XXX is a series of low dropout three-terminal regulators with a dropout of 1.15V at
1A output current.
The CJA1117B-XXX series provides current limiting and thermal shutdown. Its circuit includes a
trimmed bandage. reference to assure output voltage accuracy to be within 1.5%. Current limit is
trimmed to ensure specified. output current and controlled short-circuit current. On-chip thermal
shutdown provides protection against any combination of overload and ambient temperature that would
create excessive junction temperature.
The CJA1117B-XXX has an adjustable version, that can provide the output voltage from 1.25V to 5V with
only 2 external resistors.
APPLICATIONS
PC Motherboard
LCD Monitor
Graphic Card
DVD-Video Player
NIC/Switch
Telecom Modem
ADSL Modem
Printer and other peripheral Equipment
Marking:
A1117B
2.5
121
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1
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ORDERING INFORMATION
Package
Operating Junction Temperature Range
Part NO.
CJA1117B-ADJ
CJA1117B-1.8
CJA1117B-2.5
CJA1117B-3.3
CJA1117B-5.0
SOT-89-3L
-25 to 125℃
ABOSLUTE MAXIMUM RATINGS (Ta=25℃ unless otherwise noted)
Parameter
Symbol
Value
Unit
Input Voltage
Vi
Tj
20
V
Maximum Junction Temperature
150
℃
Storage Temperature
Tstg
-55~+150
250
℃
℃/W
Thermal Resistance from Junction to Ambient
RθJA
Lead Temperature (Soldering, 10sec.)
ESD Voltage (Machine Model)
TL
260
℃
V
VESD
400
Note: Stresses greater than those listed under ”Absolute Maximum Ratings” may cause permanent
damage to the device. These are stress ratings only, and functional of the device at these or any other
conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure
to “Absolute Maximum Ratings” for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
Parameter
Input Voltage
Operating Junction Temperature
Symbol
Value
15
Unit
V
Vi
Tj
-25~+125
℃
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ELECTRICAL CHARACTERISTICS (VIN≤10V, TJ=25℃ unless otherwise specified. )
Parameter
Symbol
Part NO.
Test
conditions
Min
Typ
1.250
1.250
1.8
1.8
2.5
2.5
3.3
3.3
5.0
5.0
0.035
1
Max
1.269
1.275
1.827
1.836
2.538
2.550
3.350
3.366
5.075
5.1
Unit
IOUT=10mA, VIN -VOUT =3.23
10mA≤IOUT≤1A, 2.75V≤VIN -VOUT ≤13.25V
IOUT=10mA, VIN=3.8V
1.231
1.225
1.773
1.764
2.463
2.450
3.251
3.234
4.925
4.9
Reference Voltage
VIROC
CJA1117B-ADJ
V
CJA1117B-1.8
CJA1117B-2.5
CJA1117B-3.3
CJA1117B-5.0
V
V
V
10mA≤IOUT≤1A, 3.3V≤VIN ≤12V
IOUT=10mA, VIN=4.5V
10mA≤IOUT≤1A, 4V≤VIN ≤12V
IOUT=10mA, VIN=5.3V
Output Voltage
VO
10mA≤IOUT≤1A, 4.8V≤VIN ≤12V
IOUT=10mA, VIN=7.0V
V
10mA≤IOUT≤1A, 6.5V≤VIN ≤12V
IOUT=10mA, 1.5V≤VIN -VOUT ≤12V
IOUT=10mA, 1.5V≤VIN -VOUT ≤10.2V
CJA1117B-ADJ
CJA1117B-1.8
CJA1117B-2.5
CJA1117B-3.3
CJA1117B-5.0
CJA1117B-ADJ
CJA1117B-1.8
CJA1117B-2.5
CJA1117B-3.3
CJA1117B-5.0
0.2
%
7
Line Regulation
LNR
I
OUT=10mA, 1.5V≤VIN -VOUT ≤9.5V
1
7
mV
%
IOUT=10mA, 1.5V≤VIN -VOUT ≤8.7V
IOUT=10mA, 1.5V≤VIN -VOUT ≤7V
1
7
1
10
0.2
0.4
7.2
Load Regulation
LDR
VIN-VOUT=1.5V, 10mA≤IOUT ≤1A
10
mV
13.2
20
Dropout Voltage
Current Limit
VD
ΔVREF=1%, IOUT=1.0A
1.3
V
A
Ilimit
VIN-VOUT=2V
1
Adjust Pin Current
60
1.7
5
120
5
μA
Minimum
μA
IL
Iq
1.5V≤VIN -VOUT ≤12V (ADJ only)
Load Current
VIN= VOUT+1.25V(ADJ except)
f=120Hz,COUT=22μFTantalum,
VIN-VOUT=3V, IOUT=1A
10
mA
Quiescent Current
RR
60
75
dB
Ripple Rejection
0.5
0.3
%
%
Temperature Stability
Long-Term Stability
TA=125℃, 1000hrs
RMS Output
TA=25℃, 10Hz≤f ≤10kHz
0.003
25
%
Noise (% of VOUT)
Thermal
℃
Shutdown Hysteresis
* With package soldering to copper area over backside ground plane or internal power plane RθJA can vary from 46 ℃/W to
>90℃/W depending on mounting technique and the size of the copper area
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FUNCTIONAL BLOCK DIAGRAM
TYPICAL APPLICATION CIRCUIT
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SOT-89-3L Package Outline Dimensions
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min
Max
1.600
0.520
0.580
0.440
4.600
Min
Max
0.063
0.020
0.023
0.017
0.181
A
b
b1
c
1.400
0.320
0.400
0.350
4.400
0.055
0.013
0.016
0.014
0.173
D
D1
E
E1
e
e1
L
1.550 REF.
0.061 REF.
2.300
3.940
2.600
4.250
0.091
0.155
0.102
0.167
1.500 TYP.
3.000 TYP.
0.060 TYP.
0.118 TYP.
0.900
1.200
0.035
0.047
SOT-89-3L Suggested Pad Layout
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SOT-89-3L Tapeand Reel
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