ISL6297 Datasheet, PDF (6/16 Pages) Intersil Corporation – Li-ion/Li Polymer Battery Charger

ISL6297
State Diagram
POR
Plug-in Indicator
LED:
RED
500ms
GREEN
YELLOW
OFF
CHARGER: OFF
500ms
500ms
Temp Fault
Cleared
(Return to previous state)
Idle
LED:
OFF
CHARGER: OFF
DISABLE
ENABLE
Delay 500ms
DISABLE or
POR
LED:
OFF
CHARGER: OFF
Open Battery Fault
LED:
OFF
Connection Verify (70ms)
CHARGER: OFF
LED:
OUTPUT:
CHARGER:
OFF
Up to V_IN
TRICKLE
Battery (+)
Terminal
Disconnected
DISABLE or
POR
Battery (+) Terminal Connected
Temperature Fault
LED:
YELLOW
CHARGER: OFF
Any Temp
Fault
Short Circuit Test
LED:
CHARGER:
TIMEOUT:
RED
TRICKLE
RESTART
V_SEN <1V
after 384
cycles
Non-Temperature Fault
LED:
YELLOW (Blink)
CHARGER: OFF
V_SEN > 1V
before 384 cycles
Trickle Charge
V_SEN < 2.8V after
1/8 TIMEOUT
LED:
RED
CHARGER: TRICKLE
V_SEN > 2.8V
before 1/8 TIMEOUT
Recharge
LED:
GREEN
CHARGER: ON
TIMEOUT and
V_SEN > 3.7V
I_CHG > I_MIN
V_SEN > 4.05V and
I_CHG < I_MIN
Fast Charge
LED:
RED
CHARGER: ON
TIMEOUT and
V_SEN < 3.7V
I_CHG > I_MIN
V_SEN > 4.05V and
I_CHG < I_MIN
before TIMEOUT
Timer Restart
LED:
GREEN
CHARGER: ON
TIMEOUT: RESTART
End of Charge
LED:
GREEN
CHARGER: ON
Charge Termination
LED:
GREEN
CHARGER: OFF
DISABLE or
POR
TIMEOUT
V_SEN < 4.00V
Charge Complete
LED:
GREEN
CHARGER: OFF
Note:
In the “Connection Verify” state, the output current
is limited to I_TRICKLE. In this state, with a battery
connected, the output voltage rises no higher than
the battery voltage. Also in this state, with no
battery connected, the output voltage rises to V_IN.
In all other states, the output voltage is limited to
4.2V (typ).
6
FN9215.0
September 27, 2005