LTC4015_15 Datasheet, PDF (59/76 Pages) Linear Technology – Multichemistry Buck Battery Charger Controller with Digital Telemetry System

LTC4015
DETAILED Register Descriptions
en_ibat_lo_alert (Sub-Address 0x0D, Bit 4, R/W)
Setting this enable bit causes an SMBALERT when IBAT has fallen below IBAT_LO_ALERT_LIMIT. ibat_lo_alert is
set to 1 by the LTC4015 if the alert occurs.
en_die_temp_hi_alert (Sub-Address 0x0D, Bit 3, R/W)
Setting this enable bit causes an SMBALERT when DIE_TEMP has exceeded DIE_TEMP_HI_ALERT_LIMIT. die_
temp_hi_alert is set to 1 by the LTC4015 if the alert occurs.
en_bsr_hi_alert (Sub-Address 0x0D, Bit 2, R/W)
Setting this enable bit causes an SMBALERT when BSR has exceeded BSR_HI_ALERT_LIMIT. bsr_hi_alert is set
to 1 by the LTC4015 if the alert occurs.
en_ntc_ratio_hi_alert (Sub-Address 0x0D, Bit 1, R/W)
Setting this enable bit causes an SMBALERT when NTC_RATIO has exceeded NTC_RATIO_HI_ALERT_LIMIT (cold
battery). Recall that the thermistor has a negative temperature coefficient so higher temperatures correspond to
lower NTC_RATIO readings and vice-versa. ntc_ratio_hi_alert is set to 1 by the LTC4015 if the alert occurs.
en_ntc_ratio_lo_alert (Sub-Address 0x0D, Bit 0, R/W)
Setting this enable bit causes an SMBALERT when NTC_RATIO has fallen below NTC_RATIO_LO_ALERT_LIMIT
(hot battery). Recall that the thermistor has a negative temperature coefficient so higher temperatures correspond
to lower NTC_RATIO readings and vice-versa. ntc_ratio_lo_alert is set to 1 by the LTC4015 if the alert occurs.
EN_CHARGER_STATE_ALERTS (Sub-Address 0x0E, Bits 10:0, R/W)
This register consists of individual charger state alert enable bits, which enable notification via SMBALERT based on
the phase of a battery charge cycle. See the CHARGER_STATE (0x37) register details and the sections Battery Charger
Algorithms and Programmable Alerts and Interrupt Controller for more information.
en_equalize_charge_alert (Sub-Address 0x0E, Bit 10, R/W)
Setting this enable bit causes an SMBALERT when the LTC4015 is in the equalize phase of a battery charge cycle
(equalize_charge=1, applies to lead-acid chemistries only).
en_absorb_charge_alert (Sub-Address 0x0E, Bit 9, R/W)
Setting this enable bit causes an SMBALERT when the LTC4015 is in the absorb phase of a battery charge cycle
(absorb_charge=1, applies to LiFePO₄ and lead-acid chemistries only).
en_charger_suspended_alert (Sub-Address 0x0E, Bit 8, R/W)
Setting this enable bit causes an SMBALERT when the LTC4015 charger is suspended (charger_suspended=1).
en_precharge_alert (Sub-Address 0x0E, Bit 7, R/W)
Setting this enable bit causes an SMBALERT when the LTC4015 is in precondition charge phase of a battery charge
cycle (precharge=1) due to the battery being below the low battery threshold of 2.9V/cell (applies to Li-Ion chem-
istries only).
en_cc_cv_charge_alert (Sub-Address 0x0E, Bit 6, R/W)
Setting this enable bit causes an SMBALERT when the LTC4015 is in the CC-CV phase of a battery charge cycle
(cc_cv_charge=1).
For more information www.linear.com/LTC4015
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