LTC4015_15 Datasheet, PDF (69/76 Pages) Linear Technology – Multichemistry Buck Battery Charger Controller with Digital Telemetry System

LTC4015
DETAILED Register Descriptions
die_temp_hi_alert (Sub-Address 0x36, Bit 3, R/Clear)
If en_die_temp_hi_alert =1, this bit indicates that an SMBALERT has occurred because DIE_TEMP has exceeded
DIE_TEMP_HI_ALERT_LIMIT.
bsr_hi_alert (Sub-Address 0x36, Bit 2, R/Clear)
If en_bsr_hi_alert =1, this bit indicates that an SMBALERT has occurred because BSR has exceeded BSR_HI_
ALERT_LIMIT.
ntc_ratio_hi_alert (Sub-Address 0x36, Bit 1, R/Clear)
If en_ntc_ratio_hi_alert =1, this bit indicates that an SMBALERT has occurred because NTC_RATIO has exceeded
NTC_RATIO_HI_ALERT_LIMIT (cold battery).
ntc_ratio_lo_alert (Sub-Address 0x36, Bit 0, R/Clear)
If en_ntc_ratio_hi_alert =1, this bit indicates that an SMBALERT has occurred because NTC_RATIO has fallen below
NTC_RATIO_LO_ALERT_LIMIT (hot battery)
CHARGER_STATE_ALERTS (Sub-Address 0x37, Bits 10:0, R/Clear)
This register consists of individual battery charger state alert bits. Individual alert bits will be asserted if the individual
alert has been enabled and the transition into that state occurs.
Once asserted, alert bits remain high until disabled or cleared. Writing a 0 to any bit clears that alert. If an enabled
alert is cleared and the alerting condition remains, a new alert is triggered immediately. When a new alert occurs, the
LTC4015 pulls down the SMBALERT pin and holds it low until an alert response algorithm (ARA) is completed. See the
section Programmable Alerts and Interrupt Controller for more information regarding the SMBALERT and ARA functions.
equalize_charge_alert (Sub-Address 0x37, Bit 10, R/Clear)
If en_equalize_charge_alert=1, this bit indicates that an SMBALERT has occurred due to the occurrence of equalize_
charge (applies to lead-acid chemistries only).
absorb_charge_alert (Sub-Address 0x37, Bit 9, R/Clear)
If en_absorb_charge_alert=1, this bit indicates that an SMBALERT has occurred due to the occurrence of absorb_
charge (applies to LiFePO₄ and lead-acid chemistries only).
charger_suspended_alert (Sub-Address 0x37, Bit 8, R/Clear)
If en_charger_suspended_alert=1, this bit indicates that an SMBALERT has occurred due to the occurrence of
charger_suspended.
precharge_alert (Sub-Address 0x37, Bit 7, R/Clear)
If en_precharge _alert=1, this bit indicates that an SMBALERT has occurred due to the occurrence of precharge.
cc_cv_charge_alert (Sub-Address 0x37, Bit 6, R/Clear)
If en_cc_cv_charge _alert=1, this bit indicates that an SMBALERT has occurred due to the occurrence of cc_cv_charge.
ntc_pause_alert (Sub-Address 0x37, Bit 5, R/Clear)
If en_ntc_pause_alert=1, this bit indicates that an SMBALERT has occurred due to the occurrence of ntc_pause.
timer_term_alert (Sub-Address 0x37, Bit 4, R/Clear)
If en_timer_term_alert=1, this bit indicates that an SMBALERT has occurred due to the occurrence of timer_term.
c_over_x_term_alert (Sub-Address 0x37, Bit 3, R/Clear)
If en_c_over_x_term_alert=1, this bit indicates that an SMBALERT has occurred due to the occurrence of c_over_x_term.
For more information www.linear.com/LTC4015
4015f
69