BQ2057DGKR Datasheet, PDF (8/24 Pages) Texas Instruments – ADVANCED LINEAR CHARGE MANAGEMENT IC FOR SINGLE AND TWO CELL LITHIUM-POLYMER

bq2057, bq2057C
bq2057T, bq2057W
SLUS025F − MAY 2001 − REVISED JULY 2002
POR
APPLICATION INFORMATION
VCC > V(BAT)
Checked at All
Times
Yes
TS Pin
in TS1 to TS2
Range
Yes
V(BAT) <V(min)
No
Regulate
Current or Voltage
Indicate
Charge In-Progress
(STAT = High)
Sleep Mode
No
Indicate SLEEP
MODE
(STAT = Hi-Z)
Suspend Charge
No
Indicate CHARGE
SUSPEND
(STAT = Hi-Z)
Regulate
I(PRECHG)
Yes
Indicate
Charge In-Progress
(STAT = High)
TS Pin
in TS1 to TS2
No
Range
Yes
TS Pin
No
in TS1 to TS2
Range
Suspend Charge
Indicate CHARGE
SUSPEND
(STAT = Hi-Z)
No
V(BAT) < V(min)
Yes
Suspend Charge
Indicate CHARGE
SUSPEND
(STAT = Hi-Z)
TS Pin
in TS1 to TS2
Range
No
Yes
Yes
TS Pin
in TS1 to TS2
Range
No
V(BAT) < V(min)
No
Yes
I(TERM)
Detected
Yes
Terminate Charge
Indicate CHARGE
Yes
Done
(STAT = Low)
V(BAT) < V(RCH)
No
Yes
Figure 2. Operation Flowchart
8
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