Esquema de T-COM que contenga SM4005A

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on: julio 02, 2021, 02:21:07 am
Solicito datos sobre sobre el convertidor de DC DC SM4005A, Voltage de salida, es de una T-COM incorporada a display Modelo LM230WF5-TLD1, desde ya gracias.
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Desconectado anmollpt

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Respuesta #1 on: julio 02, 2021, 06:28:50 am
not datasheet but voltage of ic SM4505
Pin 1:  0 volts
Pin 2:  0.483 volts
Pin 3:  1.222 volts
Pin 4:  no test point?
Pin 5:  no test point?
Pin 6:  3.328 volts
Pin 7:  3.328 volts
Pin 8:  3.304 volts
Pin 9:  3.303 volts
Pin 10:  1.095 volts
Pin 11:  1.096 volts
Pin 12:  0.950 volts
Pin 13:  0.950 volts
Pin 14:  0.011 volts
Pin 15:  0 volts
Pin 16:  -5 volts (didn't write down the exact decimal.)
Pin 17:  -5 volts
Pin 18:  4.33 volts
Pin 19:  4.33 volts
Pin 20:  5.82 volts
Pin 21:  5.80 volts
Pin 22:  28.7 volts, dropping to -5 volts.  The multimeter (10 megohms to ground) triggers some kind of flip-flop (high to low).
Pin 23:  28.7 volts, dropping to -5 volts.  Here again... interesting;  is this for sleep mode / screensaver?
Pin 24:  -5.21 volts steady
Pin 25:  28.85 volts steady
Pin 26:  28.85 volts steady
Pins 27-29:  unknown / no test points?
Pin 30:  1.216 volts
Pin 31:  1.214 volts
Pin 32:  0.213 volts
Pin 33:  4.88 volts
Pin 34:  4.88 volts
Pin 35:  no test point?
Pin 36:  12.46 volts
Pin 37:  no test point?
Pin 38:  1.243 volts
Pins 39-40:  no test points?
Pins 31-42:  no test points?
Pin 43:  4.93 volts
Pin 44:  4.96 volts
Pin 45:  3.293 volts
Pin 46:  1.125 volts
Pin 47:  1.523 volts
Pin 48:  no test point?

Saludos
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Respuesta #2 on: julio 02, 2021, 09:53:04 am
not datasheet but voltage of ic SM4505
Pin 1:  0 volts
Pin 2:  0.483 volts
Pin 3:  1.222 volts
Pin 4:  no test point?
Pin 5:  no test point?
Pin 6:  3.328 volts
Pin 7:  3.328 volts
Pin 8:  3.304 volts
Pin 9:  3.303 volts
Pin 10:  1.095 volts
Pin 11:  1.096 volts
Pin 12:  0.950 volts
Pin 13:  0.950 volts
Pin 14:  0.011 volts
Pin 15:  0 volts
Pin 16:  -5 volts (didn't write down the exact decimal.)
Pin 17:  -5 volts
Pin 18:  4.33 volts
Pin 19:  4.33 volts
Pin 20:  5.82 volts
Pin 21:  5.80 volts
Pin 22:  28.7 volts, dropping to -5 volts.  The multimeter (10 megohms to ground) triggers some kind of flip-flop (high to low).
Pin 23:  28.7 volts, dropping to -5 volts.  Here again... interesting;  is this for sleep mode / screensaver?
Pin 24:  -5.21 volts steady
Pin 25:  28.85 volts steady
Pin 26:  28.85 volts steady
Pins 27-29:  unknown / no test points?
Pin 30:  1.216 volts
Pin 31:  1.214 volts
Pin 32:  0.213 volts
Pin 33:  4.88 volts
Pin 34:  4.88 volts
Pin 35:  no test point?
Pin 36:  12.46 volts
Pin 37:  no test point?
Pin 38:  1.243 volts
Pins 39-40:  no test points?
Pins 31-42:  no test points?
Pin 43:  4.93 volts
Pin 44:  4.96 volts
Pin 45:  3.293 volts
Pin 46:  1.125 volts
Pin 47:  1.523 volts
Pin 48:  no test point?

Saludos
not datasheet but voltage of ic SM4505
Pin 1:  0 volts
Pin 2:  0.483 volts
Pin 3:  1.222 volts
Pin 4:  no test point?
Pin 5:  no test point?
Pin 6:  3.328 volts
Pin 7:  3.328 volts
Pin 8:  3.304 volts
Pin 9:  3.303 volts
Pin 10:  1.095 volts
Pin 11:  1.096 volts
Pin 12:  0.950 volts
Pin 13:  0.950 volts
Pin 14:  0.011 volts
Pin 15:  0 volts
Pin 16:  -5 volts (didn't write down the exact decimal.)
Pin 17:  -5 volts
Pin 18:  4.33 volts
Pin 19:  4.33 volts
Pin 20:  5.82 volts
Pin 21:  5.80 volts
Pin 22:  28.7 volts, dropping to -5 volts.  The multimeter (10 megohms to ground) triggers some kind of flip-flop (high to low).
Pin 23:  28.7 volts, dropping to -5 volts.  Here again... interesting;  is this for sleep mode / screensaver?
Pin 24:  -5.21 volts steady
Pin 25:  28.85 volts steady
Pin 26:  28.85 volts steady
Pins 27-29:  unknown / no test points?
Pin 30:  1.216 volts
Pin 31:  1.214 volts
Pin 32:  0.213 volts
Pin 33:  4.88 volts
Pin 34:  4.88 volts
Pin 35:  no test point?
Pin 36:  12.46 volts
Pin 37:  no test point?
Pin 38:  1.243 volts
Pins 39-40:  no test points?
Pins 31-42:  no test points?
Pin 43:  4.93 volts
Pin 44:  4.96 volts
Pin 45:  3.293 volts
Pin 46:  1.125 volts
Pin 47:  1.523 volts
Pin 48:  no test point?

Saludos

Muchas gracias anmollpt graciassss
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