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Showing results for tags 'ic'.
Found 4 results
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Hello ...i am new here. I have an ALLDOCUBE iwork 10 pro tablet. By mistake i put a powerbank to charge the tablet. The tablet needs 5v. But the power bank switched automatically to output 12 v. failed to start. I opened it up. one IC is hot .......(picture attached): ------------------------------------------------------------- i have removed the IC....everything working fine again...CHARGING OK.... but i doubt the ic has an important role to play such as overcharging protection etc. -------------------------------------------------------------- ANYONE PLEASE CAN TELL ME WHAT IS THE IC? I CANNOT FIND ON THE WEB.... ANY ALTERNATIVE? IS IT A SOT323?
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Hi, all I'm using a PCA9685 with a pinout board like Adafruit's. I'm trying to run a bunch of LEDs at 20 mA, and the chip is supposed to be able to source 10 mA and sink 25 mA. I understand that to have it Source, you connect the LED between the PWM and GND pins and to Sink you connect it between V+ and PWM. I've tried both ways and using a multimeter and a red LED I get 12.5 mA. Why is it not 25 in Sink? Also, why do I get 12.5 on Source mode as well? Is there anyone have ideas of it? if possible a simple explanation would be nice. Many thanks.☺️
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https://en.wikipedia.org/wiki/Integrated_circuit https://en.wikipedia.org/wiki/Printed_circuit_board Can a integrated circuit pins output be connected to one and more integrated circuits input pins in printed circuit board? If No, Why? Thanks & Regards, Prashant S Akerkar.jpeg.c31344da463863c78b381b78e9c76917.jpeg)
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