z Low Dropout Voltage: 1.3V(typ.) at 1A Output Current
z Thermal Shutdown
z Three-Terminal Adjustable to 1.2V,1.5V,1.8V, 2.5V, 3.3V, 5V
z Operation Junction Temperature: -40°C to 125°C
z Space-saving SOT-223 packages
z PC Motherboard
z LCD Monitor
z Graphic Card
z DVD-Video Player
z NIC/Switch
z Telecom Modem
z ADSL Modem
z Printer and Other Peripheral Equipment
1
SOT-223
1.
ADJ/GND
2. OUTPUT
3.IN
Rev - 1.91
www.jscj-elec.com
MARKING
XXX
Lot No.
CJT1117B
CJT1117B = Device code
XXX: output voltage
JIANGSU CHANGJING ELECTRONICS TECHNOLOGY CO., LTD
1A LOW DROPOUT LINEAR REGULATOR
FEATURES
SCJT1117B Series
GENERAL DESCRIPTION
The SCJT1117B series is a group of low dropout three-terminal regulators with a dropout of 1.3V(typ.) at
1A output current.
The SCJT1117B series is available in an adjustable version, which can set the output voltage from 1.25V
to 12 V with only two external resistors. In addition, it is available in five fixed voltages: 1.2V, 1.5V, 1.8 V,
2.5 V, 3.3 V and 5 V.
The SCJT1117B series offer thermal shutdown protection. Its circuit includes a Zener trimmed bandgap
reference to assure output voltage accuracy to within ±2%.
A minimum of 10µF tantalum capacitor is required at the output to improve the transient response and
stability.
APPLICATIONS
ORDERING INFORMATION
Package Operating Junction Temperature Range Part NO.
SCJT1117B-1.5
SCJT1117B-1.8
SCJT1117B-2.5
SOT
-
223
-40 to 125℃
SCJT1117B-3.3
2
MAXIMUM RATINGS
SCJT1117B-1.2
SCJT1117B-ADJ
www.jscj-elec.com
SCJ
T1117B-5.0
ABOSLUTE MAXIMUM RATINGS (T
a
=25℃ unless otherw
ise noted)
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 Symbol Value Unit
Input Voltage
V
i
20 V
Maximum Junction Temperature
T
j
-40~+150
℃
St
orage Temperature
T
stg
-40~+150
℃
Lead
Temperature (Soldering, 10s)
T
L
260
℃
ESD Rating
Human Body Model, HBM
2.5
kV
Parameter
Symbol
Value Unit
Input Voltage
V
i
15 V
Operating Junction Temperature
T
j
-40~+125
℃
Operating Ambient Temperature T
A
-40~+85
℃
Rev - 1.91
Parameter
Symbol
Value Unit
Junction-to-ambient thermal resistance
R
ΘJ
A
100
Junction-to-case thermal resistance
R
ΘJ
C
20
THERMAL METRIC
Thermal metric is measured in still air with T
A
= 25°C and mounted on a 1 in
2
FR-4 substrate PCB
covered with 2 ounces of copper.
°C/W
°C/W
Power dissipation
P
D
Internally Limited
W