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ViewSonic Corporation
Confidential - Do Not Copy
VX712
TL1451(U201)
:
PWM control, voltage range for working: 3.6~35V, Has such functions as
short-voltage protection, Over-voltage protection, over-current protection and etc.
The function of each pin and the circuit diagram inside are as follows
:
Pin Symbol
Description
Pin Symbol
Description
1
CT
External timing capacitor
9
VCC
Power supply
2
RT
External timing resistor
10
2OUT
Output 2
3
1IN+
Positive input for error amplifier 1
11
2DTC
Output 2 dead time/soft start setting
4
1IN-
Positive input for error amplifier 2
12
2FBK
Error amplifier 2 output
5
1FBK
Error amplifier 1 output
13
2IN+
Positive input for error amplifier
6
1DTC
Output 1 dead time/soft start
setting
14
2IN-
Positive input for error amplifier
7
1OUT
Output 1
15
SCP
Timing latch setting
8
GND
Ground
16
REF
Reference voltage output (2.5v)
Summary of Contents for VX712
Page 20: ... 20 ViewSonic Corporation Confidential Do Not Copy VX712 ...
Page 45: ... 45 ViewSonic Corporation Confidential Do Not Copy VX712 ...
Page 48: ... 48 ViewSonic Corporation Confidential Do Not Copy VX712 5 7 Packing For Shipping ...
Page 50: ... 50 ViewSonic Corporation Confidential Do Not Copy VX712 6 Troubleshooting Flow Chart ...
Page 81: ... 81 ViewSonic Corporation Confidential Do Not Copy VX712 12 6 Audio ...
Page 84: ... 84 ViewSonic Corporation Confidential Do Not Copy VX712 13 5 POWER PCB TOP VIEW ...
Page 85: ... 85 ViewSonic Corporation Confidential Do Not Copy VX712 13 6 POWER PCB BUTTON VIEW ...
Page 86: ... 86 ViewSonic Corporation Confidential Do Not Copy VX712 13 7 AUDIO PCB BUTTON VIEW ...