DC2343A

DC2343A demonstration circuit is a complete system level solution for a nano power buck-boost DC/DC with integrated coulomb counter. The DC2343A contains a PIC16F1459 embedded processor for communication to the PC over USB and theLTC®3335 via its I2C port. The GUI can read and write all the control registers on the LTC3335 and display and reset all its alarm registers. The DC2343A uses 2 ADC converter channels to sample the battery and O/P voltages. The voltage samples improve the functionality of the GUI, and allow optimal software correction to the measured coulombs. By adding the software correction, the first order known errors are compensated for over the operating range and the resultant coulomb count is accurate to within 3%. The DC2343A contains an LTC3335 which is a high efficiency, low quiescent current (680nA) buck-boost DC/DC converter with an integrated precision coulomb counter which monitors accumulated battery discharge in long life battery powered applications.