Datasheet

Current Taper Qual Voltage +
CELLV
2
Current TaperThreshhold +
R
s
i
0.5025
bq2060A
www.ti.com SLUS500D –OCTOBER 2001– REVISED OCTOBER 2011
Table 11. (continued)
DeltaT Δ(°C) DeltaT_Time t (s)
3 2.2 03 260
4 2.4 04 240
5 2.6 05 220
6 2.8 06 200
7 3.0 07 180
8 3.2 08 160
9 3.4 09 140
a 3.6 0a 120
b 3.8 0b 100
c 4.0 0c 80
d 4.2 0d 60
e 4.4 0e 40
f 4.6 0f 20
ΔT/Δt Holdoff Timer Programming
The holdoff timer is programmed in the lower nibble of Holdoff Time EE 0x4f. The holdoff time is 320 s minus 20
times the Holdoff Time value.
Holdoff Time Holdoff Time (s) Holdoff Time Holdoff Time (s)
00 320 08 160
01 300 09 140
02 280 0a 120
03 260 0b 100
04 240 0c 80
05 220 0d 60
06 200 0e 40
07 180 0f 20
Current Taper Termination Characteristics
Two factors in the EEPROM set the current taper termination for Li-ion battery packs. The two coded locations
are Current Taper Qual Voltage EE 0x4f and Current Taper Threshold EE 0x4e. Current taper termination occurs
during charging when the pack voltage is above the charging voltage minus CELLV (mV) and the charging
current is below the threshold coded in Current Taper Threshold for at least 80 s.
(23)
(24)
where i = the desired current termination threshold in mA, and R
S
= VFC sense resistor in ohms.
PACK OPTIONS
Pack Configuration
Pack Configuration EE 0x3f contains bit-programmable features.
b7 b6 b5 b4 b3 b2 b1 b0
DMODE SEAL CSYNC CEDV VCOR CHEM LCC1 LCC0
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