LTC4162EUFD-FST#PBF datasheet(37/52 Pages) AD

37 / 52 page

LTC4162-F

Rev A

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Symbol Name

Command

Code

Access

Bit

Range

Default Description

thermistor_

voltage_hi_alert_

limit

0x0B

R/W

[15:0]

Signed number that sets an upper limit that can be used to trigger an interrupt based on

thermistor value out of range. The value is based on the A/D value for thermistor_voltage.

The thermistor value can be determined by the expression RNTC = RNTCBIAS × (21829

- thermistor_voltage) / thermistor_voltage. Recall that the thermistor has a negative

temperature coefficient so higher temperatures correspond to lower thermistor_voltage

readings and vice-versa. The alert is enabled by setting en_thermistor_voltage_hi_alert

can be read back and cleared at thermistor_voltage_hi_alert.

thermistor_

voltage_lo_alert_

limit

0x0C

R/W

[15:0]

Signed number that sets a lower limit that can be used to trigger an interrupt based on

thermistor value out of range. The value is based on the A/D value for thermistor_voltage.

The thermistor value can be determined by the expression RNTC = RNTCBIAS × (21829

- thermistor_voltage) / thermistor_voltage. Recall that the thermistor has a negative

temperature coefficient so higher temperatures correspond to lower thermistor_voltage

readings and vice-versa. The alert is enabled by setting en_thermistor_voltage_lo_alert

and can be read back and cleared at thermistor_voltage_lo_alert.

EN_LIMIT_

ALERTS_REG

0x0D

R/W

[15:0]

Enable limit monitoring and alert notification via SMBALERT

en_telemetry_

valid_alert

[15]

To ensure high measurement accuracy, the telemetry system in the LTC4162 has a

nominal start-up time of approximately 12ms. Setting this interrupt request causes

an SMBALERT telemetry_valid_alert when telemetry_valid indicates that the telemetry

system's readings are valid. Note that the switching battery charger will not operate until

this telemetry system warmup period has passed, regardless of the state of this setting.

en_bsr_done_alert

[14]

Interrupt request that causes an SMBALERT upon bsr_done_alert when the bsr (battery-

series-resistance) measurement is finished.

en_vbat_lo_alert

[11]

Interrupt request that causes an SMBALERT upon vbat_lo_alert when vbat is below

vbat_lo_alert_limit.

en_vbat_hi_alert

[10]

Interrupt request that causes an SMBALERT upon vbat_hi_alert when vbat is above

vbat_hi_alert_limit.

en_vin_lo_alert

[9]

Interrupt request that causes an SMBALERT upon vin_lo_alert when vin is below

vin_lo_alert_limit.

en_vin_hi_alert

[8]

Interrupt request that causes an SMBALERT upon vin_hi_alert when vin is above

vin_hi_alert_limit.

en_vout_lo_alert

[7]

Interrupt request that causes an SMBALERT upon vout_lo_alert when vout is below

vout_lo_alert_limit.

en_vout_hi_alert

[6]

Interrupt request that causes an SMBALERT upon vout_hi_alert when vout is above

vout_hi_alert_limit.

en_iin_hi_alert

[5]

Interrupt request that causes an SMBALERT upon iin_hi_alert when iin is above

iin_hi_alert_limit.

en_ibat_lo_alert

[4]

Interrupt request that causes an SMBALERT upon ibat_lo_alert when ibat is below

ibat_lo_alert_limit.

en_die_temp_hi_

alert

[3]

Interrupt request that causes an SMBALERT upon die_temp_hi_alert when die_temp is

above die_temp_hi_alert_limit.

en_bsr_hi_alert

[2]

Interrupt request that causes an SMBALERT upon bsr_hi_alert when bsr is above

bsr_hi_alert_limit.

en_thermistor_

voltage_hi_alert

[1]

Interrupt request that causes an SMBALERT upon thermistor_voltage_hi_alert when

thermistor_voltageisabovethermistor_voltage_hi_alert_limit.Recallthatthethermistor

hasanegativetemperaturecoefficientsohigherthermistor_voltagereadingscorrespond

to lower temperatures.

en_thermistor_

voltage_lo_alert

[0]

Interrupt request that causes an SMBALERT upon thermistor_voltage_lo_alert when

thermistor_voltageisbelowthermistor_voltage_lo_alert_limit.Recallthatthethermistor

has a negative temperature coefficient so lower thermistor_voltage readings correspond

to higher temperatures.

LTC4162EUFD-FST#PBF Datasheet(PDF) 37 Page - Analog Devices

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