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TS1051
Constant Voltage and Constant Current Controller
For Battery Chargers and Adaptors
Absolute Maximum Rating
Parameter
2/9
Version: B07
Symbol
Value
Unit
DC Supply Voltage
V
CC
14
V
Input Voltage
V
IN
-0.3 to V
CC
V
Operating Temperature
T
OP
0 to +85
o
C
Maximum Junction Temperature Range
T
J
150
o
C
SOP-8
130
o
C/W
Thermal Resistance Junction to Ambient SOT-26
R
θ
ja
250
o
C/W
Operating Condition
Parameter
Symbol
Value
Unit
DC Supply Voltage
V
CC
2.5 to 12
V
Electrical Specifications
(Ta=25
o
C, V
IN
=5V unless otherwise noted)
Parameter
Total Current Consumption
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.
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.
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
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
Symbol
Min
Typ
Max
Unit
Total Supply Current – not taking the output sinking current into
account
I
CC
--
1.1
2
mA
Voltage Control Loop
Trans-conduction Gain (Vctrl) sink Current Only (Note 1)
G
MW
V
REF
I
IBV
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)
G
MI
V
SENSE
I
IBI
1.5
7
--
mA/mV
Current Control Loop Reference, (Note 4) I
OUT
=2.5A,
Current Out of Pin Ictrl at – 200mV
196
200
204
mV
--
25
--
μ
A
Output Stage
Low Output Voltage at 10mA sinking Current
V
OL
I
OS
--
200
--
mV
Output Short Circuit Current. Output to V
CC.
Sink Current Only
--
27
50
mA