I am Using the ADP2291 . I have two circuits parallel which they are Isolated with BAT1000 to support the system .
I am using Sanyo Battery 18650(4.1~3.7 V ,2800mA).
I used the application circuit with HERMAL PROTECTION, figure 25 on data sheet .
The only difference is RS value which is 0.15 ohm to increase the charging current at the beginning .
Single circuit ,(100% Discharged Batt)Power up the circuit will draw 1500 mA as expected . after 10 minutes Led goes to off mode. Input current draw by source is reaching to 400 ma after 15 min . I expect to charging continue for at least 2 hours with approximately 1300 mA to full charge the battery .
input voltage is 5.04 v---4.74 V is the voltage before on RS In-Pin ,100 mV drops cross the RS . VCE = 0.922 ---VB =3.74V
V ADJ = 2.145v
V CHG = 3.69 ,V between the Resistor and LED is 3.69 V ...No current drawn .
Note : I placed the NTC close to the Pin of the Batt . Temp of the battery is not exceed the 95 degree F (Measured )
Why the circuit goes to shutdown status very quick ?
Picture is attached .
Thanks for Help
Is anyone here to answer ?