Alpine TMX-R2000 - IC Terminal Voltage and Description (TFT Board); TFT Board IC Details

13 INPUT1 0.05
14 NC 0.24
Inverter Circuits CD4069 (U22)
Pin No. Type Function Voltage(V)
1 In A 5.04
2 Out /A 0.04
3 In B 4.00
4 Out /B 0.14
5 In C 0.21
6 Out /C 5.00
7 Gnd Vss 0.04
8 In D 0.24
9 Out /D 4.00
10 In E 0.04
11 Out /E 5.04
12 In F 5.04
13 Out /F 0.06
14 PI VDD 5.04
Video Switch NJM2234M (U23,U24)
Pin No. Function Voltage(V)
1 Vin1 3.01
2 SW1 0.11
3 Vin2 3.04
4 SW2 0.11
5 Vin3 3.05
6 V+ 5.01
7 Vout 2.31
8 GND 0
TFT BOARD
Step-Up DC-DC Converter AP1522(U2)
Pin No. Name Type Function Description Voltage(V)
1 SW In Switch Pin 1.32
2 Vss Gnd Gnd Pin 0
3 FB In Feedback Pin .Reference voltage is
1.25V
3.46
4 /SHDN In Shutdown Pin 3.49
5 Vin PI Input supply pin 3.49
Step-Down Converter AP1520(U3)
Pin No. Name Type Function Description Voltage(V)
1 FB In Feedback pin 0.86
2 EN In Power-off pin H: Normal operation; L: 9.62
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