1A Ultra Low Dropout Linear Regulator
FEATURES
Ultra Low Dropout Voltage
Low Ground Pin Current
Excellent Line and Load Regulation
Guaranteed Output Current of 1A
Available in SOT-223, TO-252 Package
Fixed Output Voltages : 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V
Over-Temperature/Over-Current Protection
-40℃ to 125℃ Junction Temperature Range
Moisture Sensitivity Level 3
TO-252 3L PKG
SOT-223 3L PKG
TJ3940
APPLICATION
Battery Powered Equipments
Motherboards and Graphic Cards
Microprocessor Power Supplies
Peripheral Cards
High Efficiency Linear Regulators
Battery Chargers
ORDERING INFORMATION
Device
TJ3940S-X.X
TJ3940GRS-X.X
Package
SOT-223 3L
TO-252 3L
X.X = Output Voltage = 1.2, 1.5, 1.8, 2.5, and 3.3
DESCRIPSION
The TJ3940 series of high performance ultra low-dropout linear regulators operates from 2.5V to 6V input supply
and provides ultra low-dropout voltage, high output current with low ground current. Wide range of preset output
voltage options are available. These ultra low dropout linear regulators respond fast to step changes in load which
makes them suitable for low voltage micro-processor applications. The TJ3940 is developed on a CMOS process
technology which allows low quiescent current operation independent of output load current. This CMOS process
also allows the TJ3940 to operate under extremely low dropout conditions.
Absolute Maximum Ratings
CHARACTERISTIC
Input Supply Voltage (Survival)
Maximum Output Current
Lead Temperature (Soldering, 5 sec)
Storage Temperature Range
Operating Junction Temperature Range
SYMBOL
V
IN
I
MAX
T
SOL
T
STG
T
JOPR
MIN.
-0.3
-
MAX.
6.5
1.0
260
UNIT
V
A
℃
℃
℃
-65
-40
150
125
Jan. 2011 – Rev.1.0
-1-
HTC
HTC [ HTC KOREA TAEJIN TECHNOLOGY CO. ]
