ThomsCircuit
Well-Known Member
Power source is a wall wart 12V 1A
My circuit requires the full 12V but the touch sensor in this circuit (TTP223) needs just 5v.
The datasheet on the TTP says the following
~Operating voltage 2.0V~5.5V
~Operating current @VDD=3V, no load
~At low power mode typical 1.5uA, maximum 3.0uA
id like to use a voltage regulator like LF33 but one that outputs 5volts not 3.3volts. I understand the datasheet says it will work at 3.3 volts but i have read that the TTP works better at 5volts. Can you help me find a suitable component that will supply the TTP223 the voltage and current it requires? I would also need some help with the capacitors needed at the input and output.
Im sorry i dont know much but i am trying. I do know that these IC's get hot. I am hoping that if the IC has a fixed output, the right caps are used, and that its drawing very little current it will be safe enough to use.
Im attaching my schematic. so you can see where everything is.
My circuit requires the full 12V but the touch sensor in this circuit (TTP223) needs just 5v.
The datasheet on the TTP says the following
~Operating voltage 2.0V~5.5V
~Operating current @VDD=3V, no load
~At low power mode typical 1.5uA, maximum 3.0uA
id like to use a voltage regulator like LF33 but one that outputs 5volts not 3.3volts. I understand the datasheet says it will work at 3.3 volts but i have read that the TTP works better at 5volts. Can you help me find a suitable component that will supply the TTP223 the voltage and current it requires? I would also need some help with the capacitors needed at the input and output.
Im sorry i dont know much but i am trying. I do know that these IC's get hot. I am hoping that if the IC has a fixed output, the right caps are used, and that its drawing very little current it will be safe enough to use.
Im attaching my schematic. so you can see where everything is.