LTC4162EUFD-FST#PBF datasheet(38/52 Pages) AD

38 / 52 page

LTC4162-F

Rev A

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Symbol Name

Command

Code

Access

Bit

Range

Default Description

EN_CHARGER_

STATE_ALERTS_

REG

0x0E

R/W

[12:0]

Enable charger state notification via SMBALERT

en_bat_detect_

failed_fault_alert

[12]

Interrupt request that causes an SMBALERT upon bat_detect_failed_fault_alert as

indicated by bat_detect_failed_fault due to an inability to source power to the battery

during battery detection testing (usually due to either iin_limit_active or vin_uvcl_active).

en_battery_

detection_alert

[11]

Interrupt request that causes an SMBALERT upon battery_detection_alert as indicated

by battery_detection due to the LTC4162 entering battery detection testing.

en_absorb_charge_

alert

[9]

Interrupt request that causes an SMBALERT upon absorb_charge_alert when the

absorb_charge phase of a battery charge cycle begins.

en_charger_

suspended_alert

[8]

Interrupt request that causes an SMBALERT upon charger_suspended_alert as indicated

by charger_suspended whereby battery charging is terminated due to suspend_charger

or thermistor_voltage out of jeita_t1 - jeita_t6 range.

en_cc_cv_charge_

alert

[6]

Interrupt request that causes an SMBALERT upon cc_cv_charge_alert as indicated by

cc_cv_charge denoting the onset of the constant current / constant voltage phase of a

battery charging cycle.

en_ntc_pause_alert

[5]

Interrupt request that causes an SMBALERT upon ntc_pause_alert as indicated by

ntc_pause whereby a battery charge cycle is interrupted due to thermistor_voltage out

of range as set by the jeita_t1 through jeita_t6 values.

en_timer_term_

alert

[4]

Interrupt request that causes an SMBALERT upon timer_term_alert as indicated

by timer_term whereby a battery charge cycle terminates due to tcvtimer reaching

max_cv_time, the maximum time allowed in constant_voltage mode.

en_c_over_x_

term_alert

[3]

Interrupt request that causes an SMBALERT upon c_over_x_term_alert as indicated by

c_over_x_term whereby a battery charge cycle terminates due to ibat dropping below

the c_over_x_threshold.

en_max_charge_

time_alert

[2]

Interrupt request that causes an SMBALERT upon max_charge_time_fault_alert as

indicatedbymax_charge_time_faultwherebycharginghasterminatedduetotchargetimer

reaching max_charge_time.

en_bat_missing_

fault_alert

[1]

Interrupt request that causes an SMBALERT upon bat_missing_fault_alert as indicated

by bat_missing_fault whereby charging is prohibited if no battery is detected during the

battery presence detection phase at the beginning of a charge cycle.

en_bat_short_

fault_alert

[0]

Interrupt request that causes an SMBALERT upon bat_short_fault_alert as indicated by

bat_short_fault whereby charging is prohibited if a shorted battery is detected during

the battery presence detection phase at the beginning of a charge cycle.

EN_CHARGE_

STATUS_ALERTS_

REG

0x0F

R/W

[5:0]

Enable charge status notification via SMBALERT

en_ilim_reg_

active_alert

[5]

Interrupt request that causes an ilim_reg_active_alert SMBALERT upon ilim_reg_active

(VCSP-VCSN greater than 45mV). May indicates that the switching regulator is currently

controlling power delivery based on a safety current limit. This should not occur under

normal conditions and is likely the result of a circuit board fault. Alternately indicates

that the switching regulator is in dropout (near 100% duty cycle) and is not regulating

on any feedback control loop.

en_thermal_reg_

active_alert

[4]

Interrupt request that causes a thermal_reg_active_alert SMBALERT upon thermal_reg_

active indicating that the icharge_dac is being dialed back to reduce internal die heating.

en_vin_uvcl_

active_alert

[3]

Interrupt request that causes a vin_uvcl_active_alert SMBALERT upon vin_uvcl_active

indicatingthattheundervoltageregulationloophastakencontroloftheswitchingregulator.

en_iin_limit_

active_alert

[2]

Interrupt request that causes a iin_limit_active_alert SMBALERT upon iin_limit_active

indicatingthattheinputcurrentregulationloophastakencontroloftheswitchingregulator.

en_constant_

current_alert

[1]

Interruptrequestthatcausesaconstant_current_alertSMBALERTuponconstant_current

indicating that the battery charger constant current regulation loop has taken control

of the switching regulator.

LTC4162EUFD-FST#PBF Datasheet(PDF) 38 Page - Analog Devices

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