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PIN Descriptions:
Pin Names Function
1
CT
External timing capacitance
2
RT
External timing resistance
3
NON1
Positive input for error amplifier 1
4 INV1 Negative
input
for error amplifier 1
5
FB1
Output for error amplifier 1
6
DT1
Output 1 dead time/soft start setting
7 OUT1 Output
1
8 GND Ground
9 Vcc
Power
Supply
10 OUT2 Output
2
11
DT2
Output 2 dead time/soft start setting
12
FB2
Output for error amplifier 2
13 INV2
Negative
input
for error amplifier 2
14
NON2
Positive input for error amplifier 2
15
SCP
Timing latch setting
16
VREF
Reference voltage(2.5v) output
18
ViewSonic Corporation
Confidential - Do Not Copy
VA502mb-1
Block Diagram
Summary of Contents for VA502mb-1
Page 10: ...7 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 13: ...10 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
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Page 16: ...PIN Descriptions 13 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 18: ...Block Diagram PIN Function 15 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 38: ...5 7 Packing Procedure 35 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 42: ...39 ViewSonic Corporation Confidential Do Not Copy VA502mb 1 6 Troubleshooting Flow Chart...
Page 43: ...7 Block Diagram 40 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 53: ...9 PCB Layout Diagrams MAIN BOARD 50 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 54: ...POWER BOARD 51 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 56: ...53 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 57: ...AUDIO BOARD 54 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 58: ...KEY BOARD 55 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 61: ...58 ViewSonic Corporation Confidential Do Not Copy VA502mb 1 Packing for Shipping...