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TSM1012 Datasheet(PDF) 4 Page - STMicroelectronics

Part No. TSM1012
Description  LOW CONSUMPTION VOLTAGE AND CURRENT CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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TSM1012 Datasheet(HTML) 4 Page - STMicroelectronics

   
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In the above application schematic, the TSM1012 is used on the secondary side of a flyback adapter (or
battery charger) to provide an accurate control of voltage and current. The above feedback loop is made
with an optocoupler.
Figure 1 : Internal Schematic
Figure 2 : Typical Adapter or Battery Charger Application Using TSM1012
28V
Vref
Vcc
CC
CC-
CC+
Gnd
CV
CV-
CV+
Out
1,25V
3
4
8
5
1
7
2
6
Rsense
C2
R2
R1
C1
C3
optocoupler
secondary side
Cic1
2,2nF
Cvc1
2,2nF
Ric1
22K
Rvc1
22K
Rlimit
R4
R5
R3
D1
D2
OUT+
OUT-
Ric2
1K
PWM
controller
optocoupler
primary side
TSM1012
28V
Vref
Vcc
CC
CC-
CC+
Gnd
CV
CV-
CV+
Out
1,25V
3
4
8
5
1
7
2
6
C4
47nF


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