ISL6292C Datasheet, PDF (5/11 Pages) Intersil Corporation – Li-ion/Li Polymer Battery Charger

Charging Flow Chart
Power Up
ISL6292C
V_IN>V_POR ?
N
Y
POR
Initialization
Reset counter
Trickle
Charge
VSEN>V_MIN?
Y
N
N
1/8 TIMEOUT?
Trickle
Charge
Y
CC Charge
VSEN>=V_CH?
Y
N
N
TIMEOUT?
Constant
Current
Y
Charge
CV Charge
I_ch < I_MIN ?
Y
N
N
TIMEOUNT?
Constant
Voltage
Y
Charge
set FAULT low
latch up charger
N
EN toggled ?
Y
EOC or FAULT
EOC indication:
set STATUS high
keepNFAULT high
Y
TIMEOUT?
N
charger inhibited
reset counter
VSEN
N
<
V_RECHRG?
Y
Start recharge
Inhibit
FIGURE 2. CHARGING FLOW CHART
5
FN9133.2
July 22, 2005