LPC812 - on board power availability
Posted: Fri Jun 06, 2014 3:21 pm
I was evaluating the 812 tssop20
5v from the usb dongle is zener'd (I assume - there is a diode on the pcb)
down to approx 3.1v.
I connected an LED VSS to VDD and the voltage dropped about 150mv or so
The LED was drawing approx 3.6ma (per my Harbor Freight/Centec DMM)
what power is available - considering the size of the traces and SMT diode ??
I want to connect a 1K pot, some I2C resisters, and a 3 terminal temp sensor to it.
an LED possibly - (definitely for troubleshooting)
5v from the usb dongle is zener'd (I assume - there is a diode on the pcb)
down to approx 3.1v.
I connected an LED VSS to VDD and the voltage dropped about 150mv or so
The LED was drawing approx 3.6ma (per my Harbor Freight/Centec DMM)
what power is available - considering the size of the traces and SMT diode ??
I want to connect a 1K pot, some I2C resisters, and a 3 terminal temp sensor to it.
an LED possibly - (definitely for troubleshooting)