LTC4015_15 Datasheet, PDF (60/76 Pages) Linear Technology – Multichemistry Buck Battery Charger Controller with Digital Telemetry System

LTC4015
DETAILED Register Descriptions
en_ntc_pause_alert (Sub-Address 0x0E, Bit 5, R/W)
Setting this enable bit causes an SMBALERT when the LTC4015 is in thermistor pause state (ntc_pause=1) due
to NTC_RATIO out of range as set by the JEITA_T1 and JEITA_T6 values. See the section J.E.I.T.A. Temperature
Qualified Charging (applies to lithium chemistries only).
en_timer_term_alert (Sub-Address 0x0E, Bit 4, R/W)
Setting this enable bit causes an SMBALERT when the LTC4015 is in timer termination state (timer_term=1) due to
battery being at V_CHARGE for more than MAX_CHARGE_TIME (applies to lithium chemistries only).
en_c_over_x_term_alert (Sub-Address 0x0E, Bit 3, R/W)
Setting this enable bit causes an SMBALERT when the LTC4015 is in C/x termination state (c_over_x_term=1) due
to IBAT dropping below C_OVER_X_THRESHOLD (applies to lithium chemistries only).
en_max_charge_time_fault_alert (Sub-Address 0x0E, Bit 2, R/W)
Setting this enable bit causes an SMBALERT when the LTC4015 is in max charge time fault (max_charge_time_
fault = 1) due to MAX_CHARGE_TIMER exceeding MAX_CHARGE_TIME during a charge cycle (applies to lithium
chemistries only).
en_bat_missing_fault_alert (Sub-Address 0x0E, Bit 1, R/W)
Setting this enable bit causes an SMBALERT if the LTC4015 is in battery missing fault state (bat_missing_fault=1)
due to no battery detected.
en_bat_short_fault_alert (Sub-Address 0x0E, Bit 0, R/W)
Setting this enable bit causes an SMBALERT if the LTC4015 is in shorted battery fault state (bat_short_fault=1) be-
cause the battery was determined to be shorted during the battery detection phase at the beginning of a charge cycle.
EN_CHARGE_STATUS_ALERTS (Sub-Address 0x0F, Bits 3:0, R/W)
This register consists of individual charge status alert enable bits, which enable notification via SMBALERT based on
the status of the battery charge current control circuitry. See the CHARGE_STATUS register details and the section
Programmable Alerts and Interrupt Controller for more information.
en_vin_uvcl_active_alert (Sub-Address 0x0F, Bit 3, R/W)
Setting this enable bit causes an SMBALERT when the UVCL undervoltage current limit regulation loop of the
LTC4015 is in control of the switching CHARGER current delivery (vin_uvcl_active=1).
en_iin_limit_active_alert (Sub-Address 0x0F, Bit 2, R/W)
Setting this enable bit causes an SMBALERT when the input current regulation loop of the LTC4015 is in control of
the switching CHARGER current delivery (iin_limit_active=1).
en_constant_current_alert (Sub-Address 0x0F, Bit 1, R/W)
Setting this enable bit causes an SMBALERT when the battery charge current regulation loop of the LTC4015 is in
control of the switching CHARGER current delivery (constant_current=1).
en_constant_voltage_alert (Sub-Address 0x0F, Bit 0, R/W)
Setting this enable bit causes an SMBALERT when the battery voltage regulation loop of the LTC4015 is in control
of the switching CHARGER current delivery (constant_voltage=1).
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