Datasheet

LTC4156
38
4156f
Table 26. NTC Analog-to-Digital Converter Result
NTC ANALOG-TO-DIGITAL CONVERTER RESULT REG5
SUB ADDRESS 0x05 NTCVAL[6:0]
DIRECTION Read
NTC CONVERSION
RESULT D7 D6 D5 D4 D3 D2 D1 D0
NTCVAL[6:0]* d d d d d d d
See NTC Thermistor Monitor in Operation section to convert ADC result
to temperature.
Table 27. NTC Temperature Out of Range for Battery Charging
NTC TEMPERATURE OUT OF RANGE FOR
BATTERY CHARGING REG5
SUB ADDRESS 0x05 NTC_WARNING
DIRECTION Read
NTC TEMP RANGE D7 D6 D5 D4 D3 D2 D1 D0
Temperature Normal 0
Too Hot or Too Cold
to Charge
1
Table 28. Battery Charger Interrupt Mask
BATTERY CHARGER INTERRUPT MASK REG6
SUB ADDRESS 0x06 ENABLE_CHARGER_INT
DIRECTION Write and Readback
INTERRUPT
ENABLE STATUS D7 D6 D5 D4 D3 D2 D1 D0
Charger Interrupts
Disabled*
0
Charger Interrupts
Enabled
1
*Default.
Interrupt triggered by any change in CHARGER_STATUS[2:0].Any data
written to sub address 0x06 has side effect of clearing any pending
interrupt request.
Table 29. Fault Interrupt Mask
FAULT INTERRUPT MASK REG6
SUB ADDRESS 0x06 ENABLE_FAULT_INT
DIRECTION Write and Readback
INTERRUPT ENABLE
STATUS D7 D6 D5 D4 D3 D2 D1 D0
Fault Interrupts
Disabled*
0
Fault Interrupts
Enabled
1
*Default.
Interrupt triggered by any change in OVP_ACTIVE, BAD_CELL, OTG_
FAULT or NTC_HOT_FAULT. Any data written to sub address 0x06 has
side effect of clearing any pending interrupt request.
Table 30. External Power Available Interrupt Mask
EXTERNAL POWER AVAILABLE INTERRUPT MASK REG6
SUB ADDRESS 0x06 ENABLE_EXTPWR_INT
DIRECTION Write and Readback
INTERRUPT
ENABLE STATUS D7 D6 D5 D4 D3 D2 D1 D0
External Power
Interrupts
Disabled*
0
External Power
Interrupts Enabled
1
*Default.
Interrupt triggered by any change in USBSNSGD, WALLSNSGD, or
EXTPWRGD. Any data written to sub address 0x06 has side effect of
clearing any pending interrupt request.
OPERATION