TS1052

Constant Voltage and Constant Current Controller

For Battery Chargers and Adaptors

2/8

Version: A12

Absolute Maximum Rating

Parameter

Symbol

Value

Unit

DC Supply Voltage

20

V

Input Voltage

V

Operating Temperature

0 to +85

Maximum Junction Temperature Range

150

Thermal Resistance Junction to Ambient

R

θja

250

Operating Condition

Parameter

Symbol

Value

Unit

DC Supply Voltage

2.5 to 18

V

Note 1: If the Voltage on Vctrl (the negative input of the amplifier) is higher than the positive amplifier input (Vref-

1.21V), and it is increased by 1mV, the sinking current at the output will be increased by 3.5mA.

Note 2: The internal Voltage reference is set at 1.21V (bandgap reference). The voltage control loop precision

takes into account the cumulative effects of the internal voltage reference deviation as well as the input

offset voltage of the trans-conductance operational amplifier. The internal voltage reference is fixed by

bandgap, and trimmed to 0.5% accuracy at room temperature.

Note 3: When the positive input at Ictrl is lower than -200mV, and the voltage is decreased by 1mV, the sinking

current at the output will be increased by 7mA

Note 4: The internal current sense threshold is set to -200mV. The current control loop precision takes into account

the cumulative effects of the internal voltage reference deviation as well as the input offset voltage of the

trans-conduction operational amplifier

Parameter

Symbol

Min

Typ

Max

Unit

Total Current Consumption

Total Supply Current – not taking the output sinking

current into account

--

1.1

2

mA

Voltage Control Loop

Trans-conduction Gain (Vctrl) sink Current Only (Note 1)

1

3.5

--

mA/mV

Voltage Control Loop Reference (Note 2)

1.198

1.21

1.222

V

Input Bias Current (Vctrl)

--

50

--

nA

Current Control Loop

Trans-conduction Gain (Ictrl) sink Current only (Note 3)

1.5

7

--

mA/mV

196

200

204

mV

Current Out of Pin Ictrl at – 200mV

--

25

--

µA

Output Stage

Low Output Voltage at 10mA sinking Current

--

200

--

mV

Only

--

27

50

mA