Block Diagrams
LW32A23W/LW40A23W
Main Board Supply &Sound Exclusive IC of STR-W6853
Outlines
1. A new 7 Pin package has been developed from the existing 5 Pin package. High-power MOSFET is
embedded in a small package to save space.
2. The distance between the pins of MOSFET drain & source has been widened to 1.8mm where high
voltage is applied,allowing the loading of high anti-pressure MOSFET.
3. The operation mode changes in 3 stages according to the load applied, and saves power consumption.
TFC, MBS, and pseudo-oscillation are available.
Features
1. Improvement of power efficiency through automatic conversion of operation modes the controlling MIC
part saves power consumption through a BCD processor. W6800 series changes the operation mode in 3
stages according to the load applied and saves power consumption.
1) Pseudo-oscillation under load
2) If MBS (Multi, Bottom, Skip) frequency exceeds 70 kHz under medium or small loads, the bottom is
skipped while bottom, ON is maintained.
3) If TFC (Time, Fix, Control)operation extends the ON time forcibly under St-By load, the OFF time is
controlled to lower the oscillating frequency. In the event of compulsory ON, control by external
resistors is possible.
2. Major Features
1) Embedded overcurrent protection (OCP) of pulse by pulse
2) Embedded overload protection (OLP) of latch shut down.
3) Embedded thermal shutdown function.
4) Embedded overvoltage protection for input voltage
5) Adjustable frequency for TFC operation
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 ...
