function
For supplying power to the control circuit,dividing the charged current of the high-voltage current source connected to the drain
during startup,and comparing VDD voltage hysteresis.
Divided into two threshold voltages VDDon to start switching and to disconnect the startup current source (normally 14.5V), and
VDDoff to stop switching and to operate the startup current source (normally 8V)
Power MOSFET source and the circuit reference ground (GND)
Power MOSFET drain.Also used during startup as the internal high-voltage current source
until the external VDD capacitor is charged.
Feedback input.Operating voltage range of 0V ~1V.Determined by the maximum MOSFET current value.
The current limit in due consideration of the maximum drain current is included in the FB pin that is connected to the source pin.
Block Diagrams
LW32A23W/LW40A23W
Backup Power Source
Viper 12A Block Diagram
Pin Functions
Name
VDD
SOURCE
DRAIN
FB
Summary of Contents for LW32A23W
Page 3: ...Block Diagrams LW32A23W LW40A23W Sound Block diagram ...
Page 4: ...Block Diagrams LW32A23W LW40A23W Video Block diagram ...
Page 5: ...Block Diagrams LW32A23W LW40A23W Power Block diagram ...
Page 6: ...LCD TV 32 40 Power Block diagram Block Diagrams LW32A23W LW40A23W Inverter Power Source ...
Page 29: ...LW32A23W LW40A23W Schematic Diagrams 1 DC 6V ...
Page 31: ...LW32A23W LW40A23W Schematic Diagrams 1 DC 6V ...
Page 33: ...LW32A23W LW40A23W Schematic Diagrams D009 D010 D012 D014 ...
Page 35: ...LW32A23W LW40A23W Schematic Diagrams D013 D014 D015 D016 D021 ...
Page 37: ...LW32A23W LW40A23W Schematic Diagrams D017 D018 ...
Page 39: ...LW32A23W LW40A23W Schematic Diagrams D019 D020 ...
