TJ1051 Datasheet, PDF (1/4 Pages) HTC Korea TAEJIN Technology Co. – CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR ADATPTORS AND BATTERY CHARGERS

CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
FOR ADATPTORS AND BATTERY CHARGERS
TJ1051
FEATURES
SOT-23-6LD
SOP-8
● CONSTANT VOLTAGE AND CONSTANT CURRENT
CONTROL
● LOW VOLTAGE OPERATION
● PRECISION INTERNAL COMPONENT COUNT
● CURRENT SINK OUTPUT STAGE
● EASY COMPENSATION
● LOW AC MAINS VOLTAGE REJECTION
ORDERING INFORMATION
Device
Marking
Package
DESCRIPTION
TJ1051CL
1051
SOT-23-6LD
TJ1051CD
TJ1051
SOP-8
TJ1051 is a highly integrated solution for SMPS
applications requiring constant voltage and constant
PIN CONNECTIONS (TOP VIEW)
current mode.
TJ1051 integrates one voltage reference, two operational
SOT-23-6
SOP-8
amplifiers (with ORed ouputs - common collectors), and
a current sensing circuit.
1 ^Vctrl Vcc 6
1 Vctrl
Gnd 8
The voltage reference combined with one operational
amplifiers makes it an ideal voltage controller, and the
2 ^{Gnd Vsense} 5
other low voltage reference combined with the other
operational amplifier makes it an ideal current limiter
3 Out ^Ictrl 4
for output low side current sensing.
The current threshold is fixed and precise.
The only external components are :
● _{A resistor brideg to be connected to the output Block Diagram}
of the power supply (adaptor, battery charger)
to set the voltage regulation by dividing the
desired output voltage to match the internal
1.210V
voltage reference value.
● _{A sense resistor having a value and allowable}
2 Vcc
Out 7
3 Vsense ^Ictrl 6
4 ^Nc
Nc ₅
Vcc
Out
dissipation power which need to be chosen
according to the internal vlotage threshold.
● _{Optional compensation components (R and C).}
200mV
Vctrl
APPLICATIONS
● BATTERY CHARGERS
● ADAPTERS
Gnd
Ictrl
Vsense
TJ1051, is ideal for smallest package available, is ideal for space shrinked applications such as
battery chargers and adaptors.
Jan. 2007-Rev 1.0
1
HTC