Hi Charles Mauney,
Actually I don't wanna use an external current source , I want use a simple voltage source switched to a current source controlled by bq2004.
I based on the DV2004L1 :Fast Charge Development System , Control of PNP POWER tRANSISTOR : www.ti.com/lit/ug/sluu014/sluu014.pdf
In this datashhet they said that the charge current is sourced from an on-board frequency-modulated linear regulator, and when I saw their board schematic they are using a same circuit to charge the battery.
Is the circuitin yellow (attached picture) is not the frequency-modulated linear regulator ? if it is, why the charge current drop on mine?
Please explain me I'm confused
Regards