TS1051 Datasheet, PDF (1/9 Pages) Taiwan Semiconductor Company, Ltd – Constant Voltage and Constant Current Controller For Battery Chargers and Adaptors

TS1051
Constant Voltage and Constant Current Controller
For Battery Chargers and Adaptors
SOT-26
Pin Definition:
1. VCTRL 6. VCC
2. VND 5, VSENSE
3. Out 4. ICTRL
SOP-8
Pin Definition:
1. VCTRL 8. VND
2. VCC 7, Out
3. VSENSE 6. ICTRL
4. N.C 5. N.C
General Description
TS1051 is a highly integrated solution for SMPS applications requiring CV (constant voltage) and CC (constant current)
mode. TS1051 integrated one voltage reference, two operational amplifiers, and a current sensing circuit. The voltage
reference combined with one operational amplifier make it an ideal voltage controller, and the other low voltage
reference combined with the other operational amplifier make it an ideal current limiter for output low side current
sensing.
The current threshold is fixed, and precise. The only external components are:
* A resistor bridge to be connected to the output of the power supply (Adapter, 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
voltage threshold.
Features
● Constant Voltage and Constant Current Control
● Low Voltage Operation
● Precision Internal Voltage Reference
● Low External Component Count
● Current Sink Output Stage
● Easy Compensation
● Low AC Mains Voltage Rejection
Ordering Information
Part No.
TS1051CX6 RF
TS1051CS RL
Package
SOT-26
SOP-8
Block Diagram
Packing
3Kpcs / 7” Reel
2.5Kpcs / 13” Reel
Application
● Battery Charger
● Adapters
Pin Function Description
Name
Type
V_CTRL
Analog Input
V_ND
Power Supply
Out
Current Sink Output
I_CTRL
Analog Input
V_SENSE
Analog Input
V_CC
Power Supply
Function
Input Pin of the Voltage Control Loop
Ground Line. 0V Reference For All Voltage
Output Pin. Sinking Current Only
Input Pin of the Current Control Loop
Input Pin of the Current Control Loop
Position Power Supply Line
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Version: B07