TJ1051 HTC Korea TAEJIN Technology Co., TJ1051 Datasheet

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TJ1051

Manufacturer Part Number
TJ1051
Description
Constant Voltage & Constant Current Controller
Manufacturer
HTC Korea TAEJIN Technology Co.
Datasheet

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Part Number:
TJ1051CL
Manufacturer:
HTC
Quantity:
20 000
CONSTANT VOLTAGE & CONSTANT CURRENT CONTROLLER
Absolute Maximum Ratings
(T
Operating Conditions
2008 – Rev. 1.1
DC Supply Voltage
FEATURES
APPLICATION
DESCRIPSION
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 one output - common
collectors), and a current sensing circuit. The voltage reference combined with one operational amplifier 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 space shrunk applications such as adapters and battery chargers.
DC Supply Voltage
Input Voltage
Operating Free Air Temperature Range
Maximum Junction Temperature
A
= 25℃, unless otherwise specified)
A resistor bridge to be connected to the output of the power supply (adaptor, battery charger) to set the
A sense resistor having a value and allowable dissipation power which need to be chosen according to the
Constant Voltage and Constant Current Control
Low Voltage Operation
Precision Internal Component Count
Current Sink Output Stage
Easy Compensation
Low AC Mains Voltage Rejection
Moisture Sensitivity Level 3
Battery Chargers
Adapters
voltage regulation by dividing the desired output voltage to match the internal voltage reference value.
internal voltage threshold.
CHARACTERISTIC
CHARACTERISTIC
(T
A
=25℃)
- 1 -
SYMBOL
SYMBOL
T
V
V
V
T
OPR
CC
CC
IN
ORDERING INFORMATION
J
TJ1051SF6
TJ1051D
Device
MIN.
MIN.
-0.3
2.5
0
-
-
SOT-23 6L
SOP-8
MAX.
MAX.
V
150
12
14
85
CC
SOT-23 6L
Package
SOP-8
TJ1051
UNIT
UNIT
HTC
V
V
V

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TJ1051 Summary of contents

Page 1

... Adapters DESCRIPSION 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 one output - common collectors), and a current sensing circuit. The voltage reference combined with one operational amplifier 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 ...

Page 2

... SOT- SOP-8 V GND 1 8 CTRL OUT SENSE CTRL SOP-8 SOP-8 Name V CTRL SENSE CTRL OUT Current Sink Output GND TJ1051 Status Active Active Function Analog Input Power Supply Analog Input - - Analog Input Ground HTC ...

Page 3

... V = +5V, unless otherwise specified Min. Typ. Max. 1.1 1.2 3.5 1 2.5 1.198 1.222 1.21 1.186 1.234 50 100 1.5 7 196 200 192 30 40 200 27 35 =1.210V), and it is increased REF TJ1051 Unit 2 mA mA/ mA/mV 204 mV 208 μ HTC ...

Page 4

... CONSTANT VOLTAGE & CONSTANT CURRENT CONTROLLER TYPICAL APPLICATION CIRCUIT Fig 1. Typical Adaptor or Battery Charger Application Using TJ1051 In the above application schematic, the device is used on the secondary side of a flyback adaptor (or battery charger) to provide an accurate control of voltage and current. The above feedback loop is made with an optocoupler. 2008 – ...

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