I am using the LTC4041 in a new application. For backup I am using a 3V, 5F capacitor. System voltage is 3.3V.
It appears that my actual charge current is not what is programmed by the PROG resistor. It is currently programmed to be 1A, I believe I am seeing under 1mA. In addition, the charge voltage is programmed to be 3V, the charge voltage is peaking at 2.631V. I modified the charge voltage to be 3.36V, and still the peak charge voltage is 2.631V.
Note that R12 was modified to 100K, and R16 was modified to 300K (for 3.36V charge voltage)
L1: Coilcraft XAL5030-222ME_
Super Cap: https://www.digikey.com/product-detail/en/avx-corporation/SCCR25E505SRB/478-11284-ND/7595400
Any thoughts as to what could be happening here?