Datasheet

8
Charge
Pending
DCMD Tied to Ground?
Rising Edge
on DCMD
Discharge-
Before-Charge
Pulse
Trickle
Charge
Pulse
Trickle
Charge
Pulse
Trickle
Charge
Pulse
Trickle
Charge
Top-Off
Charge
Fast
Charge
Battery Voltage?
Battery Temperature?
Top-Off
Selected?
New Charge Cycle Started by
Any One of:
V
CC
Rising to Valid Level
Battery Replacement
(V
CELL
Falling through V
MCV
)
Inhibit (INH) Released
V
EDV
< V
CELL
< V
MCV
and
V
HTF
< V
TEMP
< V
LTF
*
V
HTF
< V
TEMP
< V
LTF
*
V
EDV
< V
CELL
< V
MCV
V
TEMP
> V
LTF
or
V
TEMP
< V
HTF
V
CELL
< V
EDV
V
CELL
< V
EDV
Yes
Yes
No
*VSEL = High disables LTF threshold enforcement
No
t >
t
MCV
> V
MCV
V
CELL
> V
MCV
V
CELL
>
V
CELL
V
MCV
>
V
CELL
V
MCV
>
V
CELL
V
MCV
V
CELL
<
V
MCV
Charge
Complete
Battery
Absent
or Maximum
Time Out
V
TEMP
< V
TCO
SD2004.eps
>
V
CELL
V
MCV
- V or
T/ t or
V
TEMP
<
V
TCO
or
Maximum
Time Out
Figure 4. State Diagram
bq2004