Hello Jeff, long time since our last contact... just to notify you, I had to redesign the PCB to reach 2A of charge.
For your reference, our fisrt conversation is on the link:
Now, the doubt is: I cannot reach the VSYS fixed on 3.5V as configured when the battery drops below this voltage. The VSys voltage is following the VBat voltage even when VBat is below 3.5V.
The register configuration is bellow:
Reg00 = 0x26; // - 2A de carga
Reg01 = 0x0A; // Reg01 - VINDPM = 1V
Reg02 = 0xF0; // Reg02 -
Reg03 = 0x1A; // Reg03 - VSys 3.5V, Charger Enabled,
Reg04 = 0x20; // Reg04 - Fast Charg Current LImit to 2048mA
Reg05 = 0x33; // Reg05
Reg06 = 0x5E; // Reg06
Reg07 = 0xCD; // Reg07
Reg08 = 0x03; // Reg08
Reg09 = 0x44; // Reg09
Reg0A = 0x93; // Reg0A
Reg0D = 0x12
The circuit is:
Could you please give me a tip?
Thanks in advance...
Ivan