TJ1051CD HTC [HTC Korea TAEJIN Technology Co.], TJ1051CD Datasheet

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TJ1051CD

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

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TJ1051CD Summary of contents

Page 1

... BATTERY CHARGERS ● ADAPTERS TJ1051, is ideal for smallest package available, is ideal for space shrinked applications such as battery chargers and adaptors. Jan. 2007-Rev 1.0 SOT-23-6LD ORDERING INFORMATION Device Marking TJ1051CL TJ1051CD TJ1051 PIN CONNECTIONS (TOP VIEW) SOT-23-6 Vctrl 1 Vcc 6 Gnd Vsense ...

Page 2

CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR ADATPTORS AND BATTERY CHARGERS PIN DESCRIPTION SOT23-6 Pinout Name Pin# Vcc 6 GND 2 Vctrl 1 Ictrl 4 Out 3 Vsense 5 SOP-8 Pinout Name Pin# Vcc 2 GND 8 Vctrl 1 Ictrl ...

Page 3

CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR ADATPTORS AND BATTERY CHARGERS ELECTRICAL CHARACTERISTICS ℃ Tamb = 25 and Vcc = +5V (unless otherwise specified) Symbol Parameter Total Current Consumption Total Supply Current - not taking the Icc output sinking current ...

Page 4

CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR ADATPTORS AND BATTERY CHARGERS Figure 1 : Typical Adaptor or Battery Charger Application Using TJ1051 1.210V 200mV Ictrl + In the avove application schematic, the TJ1051 is used on the secondary side of ...

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