BQ2004E_07 Datasheet, PDF (6/19 Pages) Texas Instruments – Fast-Charge ICs

bq2004E/H
Table 2. bq2004E/H LED Output Summary
Mode 1
bq2004E
DSEL = VSS
Mode 1
bq2004H
Charge Action State
Battery absent
Fast charge pending or a discharge-before-charge in progress
Fast charging
Fast charge complete, top-off, and/or trickle
Charge Action State
Battery absent
Discharge-before-charge in progress
DSEL = VSS Fast charge pending
Fast charging
Fast charge complete, top-off, and/or trickle
Mode 2
bq2004E
Charge Action State (See note)
Battery absent
Fast charge pending or discharge-before-charge in progress
DSEL = Floating
Fast charging
Fast charge complete, top-off, and/or trickle
Mode 2
bq2004H
Charge Action State (See note)
Battery absent
Discharge-before-charge in progress
DSEL = Floating Fast charge pending
Mode 3
bq2004E/H
Fast charging
Fast charge complete, top-off, and/or trickle
Battery absent
Charge Action State
DSEL = VCC
Fast charge pending or discharge-before-charge in progress
Fast charging
Fast charge complete, top-off, and/or trickle
Note:
Pulse trickle is inhibited in Mode 2.
LED1
Low
High
Low
High
LED1
Low
High
Low
Low
High
LED1
Low
High
Low
High
LED1
Low
High
Low
Low
High
LED1
Low
Low
Low
High
LED2
Low
High
High
Low
LED2
Low
High
18 _{second high}
1
8
second
low
High
Low
LED2
Low
High
High
Low
LED2
Low
High
18 _{second high}
1
8
second
low
High
Low
LED2
Low
1
8
second
high
1
8
second
low
High
Low
6