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TSM105 Datasheet(PDF) 3 Page - STMicroelectronics

Part No. TSM105
Description  CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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TSM105 Datasheet(HTML) 3 Page - STMicroelectronics

   
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TSM105
3/9
OPERATING CONDITIONS
ELECTRICAL CHARACTERISTICS
Tamb = 25°C and Vcc = +5V (unless otherwise specified)
Symbol
Parameter
Value
Unit
Vcc
DC Supply Conditions
2.8 to 12
V
Symbol
Parameter
Test Condition
Min
Typ
Max
Unit
Total Current Consumption
Icc
Total Supply Current - not taking the
output sinking current into account
Tamb
0 < Tamb < 85°C
1.05
1.2
2mA
Voltage Control Loop
Gmv
Transconduction Gain (Vctrl). Sink
Current Only 1)
1. If the voltage on VCTRL (the negative input of the amplifier) is higher than the positive amplifier input (Vref=1.210V), and it is increased
by 1mV, the sinking current at the output OUT will be increased by 3.5mA.
Tamb
0 < Tamb < 85°C
1
3.5
2.5
mA/mV
Vref
Voltage Control Loop Reference 2)
2. The internal Voltage Reference is set at 1.210V (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 temperaure.
Tamb
0 < Tamb < 85°C
1.198
1.186
1.21
1.222
1.234
V
Iibv
Input Bias Current (Vctrl)
Tamb
0 < Tamb < 85°C
50
100
nA
Current Control Loop
Gmi
Transconduction Gain (Ictrl). Sink
Current Only 3)
3. When the positive input at ICTRL is lower than -200mV, and the voltage is decreased by 1mV, the sinking current at the output OUT will
be increased by 7mA.
Tamb
0 < Tamb < 85°C
1.5
7
4
mA/mV
Vsense
Current Control Loop Reference 4)
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-conductance operational amplifier.
Iout = 2.5mA Tamb
0 < Tamb < 85°C
196
192
200
204
208
mV
Iibi
Current out of pin ICTRL at -200mV
Tamb
0 < Tamb < 85°C
25
50
µA
Output Stage
Vol
Low output voltage at 10 mA sinking
current
Tamb
200
mV
Ios
Output Short Circuit Current. Output to
Vcc. Sink Current Only
Tamb
0 < Tamb < 85°C
27
35
50
mA


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