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Description:
ALN1951  
BQ2004E Fast-Charge ICs
Prototype PCB
Part No.:   BQ2004E
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Description:   Fast-Charge ICs
File Size :   295 K    
Page : 19 Pages
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bq2004E/H
Table 2. bq2004E/H LED Output Summary
Mode 1
bq2004E
Battery absent
DSEL = V
SS
Fast charge pending or a discharge-before-charge in progress
Fast charging
Fast charge complete, top-off, and/or trickle
Mode 1
bq2004H
Battery absent
Discharge-before-charge in progress
DSEL = V
SS
Fast charge pending
Fast charging
Fast charge complete, top-off, and/or trickle
Mode 2
bq2004E
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
Battery absent
Discharge-before-charge in progress
DSEL = Floating Fast charge pending
Fast charging
Fast charge complete, top-off, and/or trickle
Mode 3
bq2004E/H
Battery absent
DSEL = V
CC
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.
Charge Action State
Charge Action State (See note)
Low
High
LED
1
Low
High
Low
Low
High
LED
1
Low
Low
Low
High
1
8
1
8
1
8
1
8
Charge Action State
LED
1
Low
High
Low
High
LED
1
Low
High
Low
Low
High
LED
1
Low
High
1
8
1
8
LED
2
Low
High
High
Low
LED
2
Low
High
second high
second low
High
Low
LED
2
Low
High
High
Low
LED
2
Low
High
second high
second low
High
Low
LED
2
Low
second high
second low
High
Low
Charge Action State
Charge Action State (See note)
6
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