TJ4940 Datasheet, PDF (1/8 Pages) HTC Korea TAEJIN Technology Co. – 1A Ultra Low Dropout Linear Regulator

1A Ultra Low Dropout Linear Regulator
TJ4940
FEATURES
• Ultra Low Dropout Voltage
• Compatible with low ESR MLCC as Input/Output Capacitor
• Good Line and Load Regulation
• Guaranteed Output Current of 1A
• Available in SOT-223 and TO-252 Packages
• Fixed Output Voltages : 1.0V, 1.2V, 1.8V, 2.5V, and 3.3V
• Over-Temperature/Over-Current Protection
• -40 ºC to 125 ºC Junction Temperature Range
APPLICATION
• LCD TVs and SETTOP Boxes
• Battery Powered Equipments
• Motherboards and Graphic Cards
• Microprocessor Power Supplies
• Peripheral Cards
• High Efficiency Linear Regulators
• Battery Chargers
DESCRIPTION
The TJ4940 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 TJ4940 is developed on a CMOS process
technology which allows low quiescent current operation
independent of output load current. This CMOS process
also allows the TJ4940 to operate under extremely low
dropout conditions.
SOT-223 3L
TO252 3L PKG
ORDERING INFORMATION
Device
Package
TJ4940xS-X.X
SOT-223 3L
TJ4940GRS-X.X
TO-252 3L
X.X = Output Voltage = 1.0, 1.2, 1.8, 2.5, and 3.3
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.
-
-
-65
-40
MAX.
6.5
1
260
150
125
UNIT
V
A
ºC
ºC
ºC
* Calculated from package in still air, mounted to 2.6mm X 3.5mm(minimum foot print) 2 layer PCB without thermal vias per JESD51 standards.
Jul. 2011 – Preliminary
1/8
HTC