BQ77908 Datasheet, PDF (42/56 Pages) Texas Instruments – Stand-Alone Multi-Cell Lithium-Ion/Polymer Precision Protectors

bq77908
SLUSAI5D – APRIL 2011 – REVISED NOVEMBER 2011
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OV Detection Configuration #2 (OV_CFG2, Address 0x03)
Bit Number
Bit Name
7
OV_TS_CTRL
If 0
Do not use TS line for external charger
control
If 1
Use TS line for external charger control
(if OV event, pull TS = low)
6
OVH2
5
OVH1
4
OVH0
8 possible settings to control
OV hysteresis (see following
table)
3
RSVD4
2
OVD
2
1
OVD1
0
OVD0
NOT USED _{8 possible settings to}
control OV sense delay
NOT USED ^{(see following table)}
OV Hysteresis Settings
Eight possible hysteresis settings are selectable using the bits OVH[2:0] as shown in the following table.
OVH[2:0]
000
001
010
011
100
101
110
111
OV Hysteresis (mV)
300
250
200
150
100
50
25
0
OV Delay Settings
Eight possible OV trip time delay settings are selectable using the bits OVD[2:0]
OVH[2:0]
000
001
010
011
100
101
110
111
OV Delay (Seconds)
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
42
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