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 - 1.9
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
ABOSLUTE MAXIMUM RATINGS (T
A
=25℃ unless otherwise noted)
Note: Stresses greater than those listed under ”Abs
olute Maximum Ratings” may c
ause perman
ent
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.
Parameter Symbol Value Unit
Input Voltage
V
i
20 V
Thermal Resistance from Junction to Ambient
R
θJA
100
℃/W
Maximum Junction Temperature
T
j
-40~+150
℃
Storage 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
℃
2
MAXIMUM RATINGS
SCJT1117B-1.2
SCJT1117B-ADJ
Rev - 1.9
www.jscj-elec.com
SCJ
T1117B-5.0
Operating Ambient Temperature T
A
-40~+85
℃
RECOMMENDED OPERATING CONDITIONS