Datasheet

LTC4155
36
4155fc
Table 10. Battery Charger Safety Timer
BATTERY CHARGER SAFETY TIMER REG1
SUB ADDRESS 0x01 TIMER[1:0]
DIRECTION
Write and Readback
TIMER[1:0] D7 D6 D5 D4 D3 D2 D1 D0
4 Hr* 0 0
8 Hr or C/x
Indication
01
1 Hr 1 0
2 Hr 1 1
*Default setting.
Table 11. Battery Charger Current Limit
BATTERY CHARGER CURRENT LIMIT REG2
SUB ADDRESS 0x02 ICHARGE[3.0]
DIRECTION Write and Readback
FULL-SCALE
CURRENT
(%)
V
PROG
SERVO
(V) D7 D6 D5 D4 D3 D2 D1 D0
Charger
Disabled
0.000 0 0 0 0
12.50 0.150 0 0 0 1
18.75 0.225 0 0 1 0
25.00 0.300 0 0 1 1
31.25 0.375 0 1 0 0
37.50 0.450 0 1 0 1
43.75 0.525 0 1 1 0
50.00 0.600 0 1 1 1
56.25 0.675 1 0 0 0
62.50 0.750 1 0 0 1
68.75 0.825 1 0 1 0
75.00 0.900 1 0 1 1
81.25 0.975 1 1 0 0
87.50 1.050 1 1 0 1
93.75 1.125 1 1 1 0
100.00* 1.200* 1 1 1 1
*Default setting.
Table 12. Battery Charger Float Voltage
Battery Charger Float Voltage REG2
SUB ADDRESS 0x02 VFLOAT[1:0]
DIRECTION Write and Readback
BATTERY
VOLTAGE (V) D7D6D5D4D3D2D1D0
4.05* 0 0
4.10 0 1
4.15 1 0
4.20 1 1
*Default setting.
Table 13. Full Capacity Charge Indication Threshold
FULL CAPACITY CHARGE INDICATION THRESHOLD REG2
SUB ADDRESS 0x02 CXSET[1:0]
DIRECTION Write and Readback
FULL-SCALE
CURRENT
(%)
V
PROG
THRESHOLD
(V) D7 D6 D5 D4 D3 D2 D1 D0
10* 0.120* 0 0
20 0.240 0 1
2 0.024 1 0
5 0.060 1 1
*Default setting.
Table 14. Battery Charger Status Report
BATTERY CHARGER STATUS REPORT REG3
SUB ADDRESS 0x03 CHARGER_STATUS[2:0]
DIRECTION Read
BATTERY CHARGER
STATUS D7 D6 D5 D4 D3 D2 D1 D0
Charger Off 0 0 0
Low Battery Voltage 0 0 1
Constant Current 0 1 0
Constant Voltage,
VPROG>VC/X
011
Constant Voltage,
VPROG<VC/X
100
NTC TOO WARM,
Charging Paused
101
NTC TOO COLD,
Charging Paused
110
NTC HOT FAULT,
Charging Paused
111
OPERATION