BQ2057CTSTRG4 Datasheet, PDF (3/30 Pages) Texas Instruments – ADVANCED LINEAR CHARGE MANAGEMENT IC FOR SINGLE-AND TWO-CELL LITHIUM-ION AND LITHIUM-POLYMER

function block diagram
VCC
bq2057, bq2057C
bq2057T, bq2057W
SLUS025F − MAY 2001 − REVISED JULY 2002
BAT
COMP
TS
SNS
Internal Reference
_
+
Sleep Mode
_
+
Voltage Regulation
VCC
DONE
V-Control
I-Control
G(comp)
VCC
+
_ _Battery
Recharge
+
_
Battery
Conditioning
_
+
TS2 Trip
Control
Block
0.5 VCC ^_
+
_
+
TS1 Trip
High/Low SNS Set
I-Control
VCC−V(SNS)
VSS−V(SNS)
+
_
Current Regulation
+
_
Charge Termination
CC
VCC
STAT
VSS
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