LTC4015_15 Datasheet, PDF (51/76 Pages) Linear Technology – Multichemistry Buck Battery Charger Controller with Digital Telemetry System

LTC4015
Register Description
SYMBOL
SUB R/W ACTIVE DESCRIPTION
ADDR
BITS
en_ntc_pause_alert
0x0E R/W 5 enable ntc_pause_alert (0x37)
en_timer_term_alert
0x0E R/W 4 enable timer_term_alert (0x37)
en_c_over_x_term_alert
0x0E R/W 3 enable c_over_x_term alert (0x37)
en_max_charge_time_fault_alert 0x0E R/W 2 enable max_charge_time_fault alert (0x37)
en_bat_missing_fault_alert
0x0E R/W 1 enable bat_missing_fault alert (0x37)
en_bat_short_fault_alert
0x0E R/W 0 enable bat_short_fault alert (0x37)
EN_CHARGE_STATUS_ALERTS 0x0F R/W 15:0 Enable charge status alert notification via SMBALERT
DEFAULT PAGE
0
60
0
60
0
60
0
60
0
60
0
60
0x0000 ₆₀
en_vin_uvcl_active_alert
en_iin_limit_active_alert
en_constant_current_alert
en_constant_voltage_alert
QCOUNT_LO_ALERT_LIMIT
QCOUNT_HI_ALERT_LIMIT
QCOUNT_PRESCALE_FACTOR
QCOUNT
CONFIG_BITS
suspend_charger
run_bsr
force_meas_sys_on
mppt_en_i2c
0x0F R/W 3 enable vin_uvcl_active_alert (V_IN undervoltage current limit; 0x38)
0x0F R/W 2 enable iin_limit_active_alert (I_IN current limit; 0x38)
0x0F R/W 1 enable constant_current_alert (0x38)
0
60
0
60
0
60
0x0F R/W 0 enable constant_voltage_alert (0x38)
0
60
0x10 R/W 15:0 Coulomb counter QCOUNT low alert limit, same format as QCOUNT (0x13) 0x0000 61
0x11 R/W
15:0
Coulomb counter QCOUNT high alert limit, same format as QCOUNT
(0x13)
0x0000 61
0x12 R/W 15:0 Coulomb counter prescale factor
0x0200 61
0x13 R/W 15:0 Coulomb counter value
0x8000 61
0x14 R/W 15:0 Configuration Settings
0x0000 61
0x14 R/W 8 suspend battery charger operation
0
61
0x14 R/W 5 perform a battery series resistance measurement
0
61
0x14 R/W 4 force measurement system to operate
0
61
0x14 R/W 3 enable maximum power point tracking
0
61
en_qcount
0x14 R/W 2 enable coulomb counter
0
61
IIN_LIMIT_SETTING
VIN_UVCL_SETTING
0x15 R/W 5:0 Input current limit setting = (IIN_LIMIT_SETTING + 1) • 500µV / R_SNSI
0x3F 62
0x16 R/W 7:0 UVCLFB input undervoltage limit = (VIN_UVCL_SETTING + 1) • 4.6875mV 0xFF 62
RESERVED
0x17
RESERVED
0x18
ARM_SHIP_MODE
ICHARGE_TARGET
VCHARGE_SETTING
C_OVER_X_THRESHOLD
MAX_CV_TIME
MAX_CHARGE_TIME
JEITA_T1
0x19 R/W
15:0
Write 0x534D to arm ship mode. Once armed, ship mode cannot be
disarmed.
0x0000 62
0x1A R/W² 4:0 Maximum charge current target = (ICHARGE_TARGET + 1) • 1mV/R_SNSB See Note 1 62
0x1B R/W² 5:0 Charge voltage target. See detailed description for equations.
See Note 1 62
0x1C R/W² 15:0 Two’s complement Low IBAT threshold for C/x termination
See Note 1 63
0x1D R/W² 15:0 Time in seconds with battery charger in the CV state before timer
termination occurs (lithium chemistries only)
See Note 1 ₆₄
0x1E R/W²
15:0
Time in seconds before a max_charge_time fault is declared. Set to zero See Note 1
to disable max_charge_time fault
64
0x1F R/W² 15:0 Value of NTC_RATIO for transition between JEITA regions 2 and 1 (off) 0x3F00 64
For more information www.linear.com/LTC4015
4015f
51