JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
1A LOW DROPOUT LINEAR REGULATOR
GENERAL DESCRIPTION
The CJ1117 is a series of low dropout three-terminal regulators with a dropout of 1.15V at 1A output current.
The CJ1117 series provides current limiting and thermal shutdown. Its circuit includes a trimmed bandgap
reference to assure output voltage accuracy to be within 1%. 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 CJ1117 has an adjustable version, that can provide the output voltage from 1.25V to 12V with only 2
external resistors.
The CJ1117 series is available in the industry standard SOT-223,SOT-89,TO-220,TO-252 and TO-263 power
packages.
FEATURES
• Low Dropout Voltage: 1.15V at 1A Output Current
• Trimmed Current Limit
• On-Chip Thermal Shutdown
• Three-Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V, 3.3V, 5V
• Operation junction Temperature: 0 ℃ to125℃
APPLICATIONS
• PC Motherboard
• LCD Monitor
• Graphic Card
• DVD-Video player
• NIC/Switch
• Telecom Modem
• ADSL Modem
• Printer and other peripheral Equipment
TO-251
Figure 1. Package Types of CJ1117
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
1A LOW DROPOUT LINEAR REGULATOR
PIN CONFIGURATIONS
T Package A Package
(SOT-223) (SOT-89)
P Package U Package
(TO-220) (TO-252)
B Package D Package
(TO-263) (TO-251)
Figure 2. Pin Configurations of CJ1117
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
1A LOW DROPOUT LINEAR REGULATOR
FUNCTIONAL BLOCK DIAGRAM
Figure 3. Functional Block Diagram of CJ1117
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
1A LOW DROPOUT LINEAR REGULATOR
ORDERING INFORMATION
Package Temperature Range Part Number
CJT1117-ADJ
CJT1117-1.5
CJT1117-1.8
CJT1117-2.5
CJT1117-3.3
SOT-223 0 to 125℃
CJT1117-5.0
CJA1117-ADJ
CJA1117-1.5
CJA1117-1.8
CJA1117-2.5
CJA1117-3.3
SOT-89 0 to 125℃
CJA1117-5.0
CJP1117-ADJ
CJP1117-1.5
CJP1117-1.8
CJP1117-2.5
CJP1117-3.3
TO-220 0 to 125℃
CJP1117-5.0
CJU1117-ADJ
CJU1117-1.5
CJU1117-1.8
CJU1117-2.5
CJU1117-3.3
TO-252 0 to 125℃
CJU1117-5.0
CJB1117-ADJ
CJB1117-1.5
CJB1117-1.8
CJB1117-2.5
CJB1117-3.3
TO-263 0 to 125℃
CJB1117-5.0
CJD1117-ADJ
CJD1117-1.5
CJD1117-1.8
CJD1117-2.5
CJD1117-3.3
TO-251 0 to 125℃
CJD1117-5.0
CJ Χ 1117- Z
ADJ: Adjustable Output
Package Circuit Type 1.5: Fixed Output 1.5V
T: SOT-223 U: TO-252 1.8: Fixed Output 1.8V
A: SOT-89 B: TO-263 2.5: Fixed Output 2.5V
P: TO-220 D: TO-251 3.3: Fixed Output 3.3V
5.0: Fixed Output 5.0V
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
1A LOW DROPOUT LINEAR REGULATOR
ABOSLUTE MAXIMUM RATINGS (NOTE 1)
Parameter Value Unit
VIN 20 V
Maximum Junction Temperature 150 ℃
Storage Temperature Range -65 to 150 ℃
Lead Temperature (Soldering, 10sec.) 300 ℃
ESD (Machine Model) 600 V
Note 1: Su=tresses 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 Min Max Unit
VIN 15 V
Operating Junction Temperature Range 0 125 ℃
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
1A LOW DROPOUT LINEAR REGULATOR
ELECTRICAL CHARACTERISTICS
Operating Conditions: VIN≤10V, TJ=25℃ unless otherwise specified.
Parameter Conditions Min Typ Max Unit
Reference Voltage CJ1117-ADJ IOUT=10mA, =2V,
10mA≤IOUT≤1A, 1.4V≤VIN -VOUT ≤8V,
P≤ Maximum power Dissipation
1.238
1.225
1.250
1.250
1.262
1.270 V
CJ1117-1.5,IOUT=10mA, VIN=3.5V
10mA≤IOUT≤1A, 3.0V≤VIN ≤10V
1.485
1.470
1.5
1.5
1.515
1.530 V
CJ1117-1.8, IOUT=10mA, VIN=3.8V
10mA≤IOUT≤1A, 3.2V≤VIN ≤10V
1.782
1.746
1.8
1.8
1.818
1.854 V
CJ1117-2.5, IOUT=10mA, VIN=4.5V
10mA≤IOUT≤1A, 3.9V≤VIN ≤10V
2.475
2.450
2.5
2.5
2.525
2.550 V
CJ1117-3.3, IOUT=10mA, VIN=5.0V
10mA≤IOUT≤1A, 4.75V≤VIN ≤10V
3.267
3.235
3.3
3.3
3.333
3.365 V
Output Voltage
CJ1117-5.0, IOUT=10mA, VIN=7.0V
10mA≤IOUT≤1A, 6.5V≤VIN ≤12V
4.950
4.900
5.0
5.0
5.050
5.100 V
CJ1117-ADJ
IOUT=10mA, 1.5V≤VIN -VOUT ≤10V 0.035 0.2 %
CJ1117-1.5
IOUT=10mA, 1.5V≤VIN -VOUT ≤10V 1 6 mV
CJ1117-1.8
IOUT=10mA, 1.5V≤VIN -VOUT ≤10V 1 6 mV
CJ1117-2.5
IOUT=10mA, 1.5V≤VIN -VOUT ≤10V 1 6 mV
CJ1117-3.3
IOUT=10mA, 1.5V≤VIN -VOUT ≤10V 1 6 mV
Line Regulation
CJ1117-5.0
IOUT=10mA, 1.5V≤VIN -VOUT ≤10V 1 6 mV
CJ1117-ADJ
VIN-VOUT=2V, 10mA≤IOUT ≤1A 0.2 0.4 %
CJ1117-1.5
VIN-VOUT=2V, 10mA≤IOUT ≤1A 1 10 mV
CJ1117-1.8
VIN-VOUT=2V, 10mA≤IOUT ≤1A 1 10 mV
CJ1117-2.5
VIN-VOUT=2V, 10mA≤IOUT ≤1A 1 10 mV
CJ1117-3.3
VIN-VOUT=2V, 10mA≤IOUT ≤1A 1 10 mV
Load Regulation
CJ1117-5.0
VIN-VOUT=2V, 10mA≤IOUT ≤1A 1 15 mV
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
1A LOW DROPOUT LINEAR REGULATOR
ELECTRICAL CHARACTERISTICS (CONTINUED)
Operating Conditions: VIN≤10V, TJ=25℃ unless otherwise specified.
Parameter Conditions Min Typ Max Unit
∆VREF=1%, IOUT=0.1A 1.00 1.1 V
∆VREF=1%, IOUT=0.5A 1.08 1.18 V
Dropout Voltage
∆VREF=1%, IOUT=1.0A 1.15 1.25 V
Current Limit VIN-VOUT=2V 1.25 1.35 A
Adjust Pin Current 60 120 µA
Adjust Pin Current Change 1.4V≤VIN -VOUT ≤10V, 10mA≤IOUT ≤1A 0.2 5 µA
Minimum Load Current (ADJ) 1.5V≤VIN -VOUT ≤10V (ADJ only) 1.7 5 mA
Quiescent Current VIN= VOUT+1.25V 5 10 mA
Ripple Rejection f=120Hz, COUT=22µF Tantalum,
VIN-VOUT=3V, IOUT=1A 60 75 dB
Temperature Stability 0.5 %
Long-Term Stability TA=125℃, 1000hrs 0.3 %
RMS Output Noise
(% of VOUT) TA=25℃, 10Hz≤f ≤10KHz 0.003 %
Thermal Resistance,
Junction to Case
SOT-223
TO-252/251
TO-220
TO-263
15
10
4.5
4
℃/W
Thermal Shutdown Junction Temperature 150 ℃
Thermal Shutdown Hysteresis 25
℃
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
1A LOW DROPOUT LINEAR REGULATOR
Typical Characteristics CJ1117
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
1A LOW DROPOUT LINEAR REGULATOR
Typical Characteristics CJ1117
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
1A LOW DROPOUT LINEAR REGULATOR
Typical Characteristics CJ1117
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
1A LOW DROPOUT LINEAR REGULATOR
Typical Applications
