Datasheet

LTC4156
36
4156f
Table 11. Battery Charger Float Voltage
Battery Charger Float Voltage REG2
SUB ADDRESS 0x02 VFLOAT[1:0]
DIRECTION Write and Readback
BATTERY
VOLTAGE (V) D7 D6 D5 D4 D3 D2 D1 D0
3.45* 0 0
3.55 0 1
3.60 1 0
3.80 1 1
*Default setting.
Table 12. 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 13. 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
0 1 1
Constant Voltage,
VPROG<VC/X
1 0 0
NTC TOO COLD,
Charging Paused
1 1 0
NTC HOT FAULT,
Charging Paused
1 1 1
Table 14. USB On-The-Go ID Pin Detection
USB On-The-Go ID PIN DETECTION REG3
SUB ADDRESS 0x03 ID_PIN_DETECT
DIRECTION Read
ID PIN STATUS D7 D6 D5 D4 D3 D2 D1 D0
No Detection 0
ID Pin Shorted to
GND*
1
*LOCKOUT_ID_PIN has no effect on pin detection.
Table 15. USB On-The-Go Enabled Status
USB On-The-Go ENABLED STATUS REG3
SUB ADDRESS 0x03 OTG_ENABLED
DIRECTION Read
STEP-UP REGULATOR
STATUS D7 D6 D5 D4 D3 D2 D1 D0
Step-Up Switching
Regulator Inactive
0
Step-Up Switching
Regulator Active
1
Table 16. NTC Thermistor Status Report
NTC THERMISTOR STATUS REPORT REG3
SUB ADDRESS 0x03 NTCSTAT[1:0]
DIRECTION Read
NTC THERMISTOR
STATUS D7 D6 D5 D4 D3 D2 D1 D0
NTC Normal 0 0
NTC_TOO_COLD 0 1
NTC_HOT_FAULT 1 1
Table 17. Low Battery Detection
LOW BATTERY DETECTION REG3
SUB ADDRESS 0x03 LOWBAT
DIRECTION Read
BATTERY VOLTAGE
STATUS D7 D6 D5 D4 D3 D2 D1 D0
Normal 0
Low Cell Voltage* 1
*Low cell voltage is only meaningful when input (WALL or USB) power
is available and the battery charger is enabled, or when automatic or
manual enable of the step-up regulator has been requested.
OPERATION