BQ2058T Datasheet, PDF (3/18 Pages) Texas Instruments – Lithium Ion Pack Supervisor For 2-Cell Packs

bq2058T
Sel2
Sel1
Cell Inputs
Pin 9 B1P
Pin 8 B1N
+
-
Pin 7 B2N
Pin 3
VOV
+
DQ
Chip Negative
Supply
Sel2
CK
QB
DQ
Sel1
CK
QB
Any_Above_VOV
Edge
Out
Non-Retrigger
Reset Oneshot
D
CK
QB
Reset
Pin 13 OVD
Capacitor
Discharge Off Delay Capacitor Input
All_Below_VCE
Over_charge
Pin 1
CHG
Charge Control
Output (open drain)
+
DQ
VCE ^Sel2
CK
QB
DQ
Sel1
CK
QB
+
DQ
Sel2
CK
VUV
QB
DQ
Sel1
CK
QB
Any_Below_VUV
Edge
Out
Non-Retrigger
Reset Oneshot
UVD
Capacitor
Pin 14
Charge Off Delay Capacitor Input
Sleep
D
CK
QB
Reset
Pin 10 CSH
70mV
Pin 9 ^B1P
+
Pin 4 ^CSL 70mV
Pin 7 ^B2N +
Overcurrent Delay
Capacitor Input
Pin 10 CSH
160mV
Pin 9 ^B1P ₊
Pin 12 OCD
Edge
Out
Non-Retrigger
Reset Oneshot
Capacitor
D
CK ^Q
QB
Reset
Pin 4
Pin 7
CSL
160mV
B2N
+
Pin 2 ^CTL
External Output Control
Pin 16
DSG
Discharge Control
Output (totem pole)
Over_current
BD2058T1.eps
July 1997
Figure 1. Block Diagram
3