We are using the Compact, 1.5 A Linear Charger for Single-Cell Li + Battery. We have implemented the circuit of fig.24 of the ADP2291 data sheet. Everything works perfectly, but in the absence of Vin, the battery is discharged with 3-4mA.…
Designed for Imax @ 750mA based on Datasheet (Figure 23 exact, except D1 is 1N5819 instead of BAT1000)
Rs = 200mOHM
Radj = open
Vin = 5.9V (Voltage Drop across D1 is 0.301V)
Vrs = 15mV
Vadj = 2.975V
Vchg = 0.001V
Look at the ADP2291 for charging your Li-ion cell
We do not have an EVAL board for the ADP2291.
Other options could be ADP5061 or ADP5062
You may find below chart as recommended PNP transistor. It's also shown on page 13 of ADP2291 datasheet. Thank you.
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…
Without knowing about your specific voltage and current requirements,.you may want to take a look at a product such as the ADP2291. It is a linear charging IC that would keep your li-ion battery charged. Then you could use a battery backup IC such…
Can we use ADP2291 or ADP5065 for Li-polymer battery charger?
In my understnading, a Li-ion battery charger IC can also use for Li-polymer battery charger. But I would like to comnfirm it just in case.