Hello, i make pcb of mp2617b issues are face here by me:
i use 1s2p 3.7v li ion battery 21700mah (9000mah, 4500mah each). to cahrge my battery.
vin 5.5V
vcc=4.5v
chg current =2A (use 1kohm resistor)
- During charging, when i use 0.1uf tmr cap when battery voltage reaches above 3.80v charging of battery stops, and chgok led starts blinking until unless i restart my charging again.
i gnd tmr pin but during charging of battery chgok led not turns off yet even one day of continuous charging.
- tell me how to use tmr pin in my case? is if i gnd tmr pin during battery charging, is battery chg effected by this? why chgok led not turns off? is there any relation between charging of battery and tmr cap?
what i want during charging of battery after 6hr led turns off and it does not affect the blinking of led.
3) i charge battery from 3.33v to 4.20v this is my case, when battery voltage at 3.33v and i start charging voltage at battery terminal randomly goes to 3.8-3.9v why?