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ManualsBrandsLinear Technology ManualsBattery Charger ICsSuper Capacitor Backup Controller and System Monitor IC QFN
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LTC3350
32
3350fc
For more information www.linear.com/LTC3350
regisTer Map
REGISTER SUB ADDR R/W BITS DESCRIPTION DEFAULT PAGE
clr_alarms 0x00 R/W 15:0 Clear alarms register 0x0000 33
msk_alarms 0x01 R/W 15:0 Enable/mask alarms register 0x0000 33
msk_mon_status 0x02 R/W 9:0 Enable/mask monitor status alerts 0x0000 34
cap_esr_per 0x04 R/W 15:0 Capacitance/ESR measurement period 0x0000 34
vcapfb_dac 0x05 R/W 3:0 V
CAP
voltage reference DAC setting 0xF 34
vshunt 0x06 R/W 15:0 Capacitor shunt voltage setting 0x3999 34
cap_uv_lvl 0x07 R/W 15:0 Capacitor undervoltage alarm level 0x0000 34
cap_ov_lvl 0x08 R/W 15:0 Capacitor overvoltage alarm level 0x0000 34
gpi_uv_lvl 0x09 R/W 15:0 GPI undervoltage alarm level 0x0000 34
gpi_ov_lvl 0x0A R/W 15:0 GPI overvoltage alarm level 0x0000 34
vin_uv_lvl 0x0B R/W 15:0 V
IN
undervoltage alarm level 0x0000 35
vin_ov_lvl 0x0C R/W 15:0 V
IN
overvoltage alarm level 0x0000 35
vcap_uv_lvl 0x0D R/W 15:0 V
CAP
undervoltage alarm level 0x0000 35
vcap_ov_lvl 0x0E R/W 15:0 V
CAP
overvoltage alarm level 0x0000 35
vout_uv_lvl 0x0F R/W 15:0 V
OUT
undervoltage alarm level 0x0000 35
vout_ov_lvl 0x10 R/W
15:0 V
OUT
overvoltage alarm level 0x0000 35
iin_oc_lvl 0x11 R/W 15:0 I
IN
overcurrent alarm level 0x0000 35
ichg_uc_lvl 0x12 R/W 15:0 I
CHG
undercurrent alarm level 0x0000 35
dtemp_cold_lvl 0x13 R/W 15:0 Die temperature cold alarm level 0x0000 35
dtemp_hot_lvl 0x14 R/W 15:0 Die temperature hot alarm level 0x0000 35
esr_hi_lvl 0x15 R/W 15:0 ESR high alarm level 0x0000 35
cap_lo_lvl 0x16 R/W 15:0 Capacitance low alarm level 0x0000 35
ctl_reg 0x17 R/W 3:0 Control register 0b0000 36
num_caps 0x1A R 1:0 Number of capacitors configured – 36
chrg_status 0x1B R 11:0 Charger status register – 36
mon_status 0x1C R 9:0 Monitor status register – 37
alarm_reg 0x1D R 15:0 Active alarms register 0x0000 37
meas_cap 0x1E R 15:0 Measured capacitance value – 38
meas_esr 0x1F R 15:0 Measured ESR value – 38
meas_vcap1 0x20 R 15:0 Measured capacitor one voltage – 38
meas_vcap2 0x21 R 15:0 Measured capacitor two voltage – 38
meas_vcap3 0x22 R 15:0 Measured capacitor three voltage – 38
meas_vcap4 0x23 R 15:0 Measured capacitor four voltage – 38
meas_gpi 0x24 R 15:0 Measured
GPI pin voltage – 38
meas_vin 0x25
R 15:0 Measured V
IN
voltage – 38
meas_vcap 0x26 R 15:0 Measured V
CAP
voltage – 38
meas_vout 0x27 R 15:0 Measured V
OUT
voltage – 38
meas_iin 0x28 R 15:0 Measured I
IN
current – 38
meas_ichg 0x29 R 15:0 Measured I
CHG
current – 38
meas_dtemp 0x2A R 15:0 Measured die temperature – 38
Registers at sub address 0x03, 0x18, 0x19, 0x2B-0xFF are unused.
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