Datasheet

3
LTC1479
V
DCIN
= 25V, V
BAT1
= 16V, V
BAT2
= 12V, T
A
= 25°C unless otherwise noted. (Note 2)
DC ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
DCIN Good Monitor
V
THDCDIV
DCDIV Threshold Voltage (Mode 1) V
DCDIV
Rising from 1V to 1.5V ● 1.190 1.215 1.240 V
V
HYSDCDIV
DCDIV Hysteresis Voltage (Mode 1) V
DCDIV
Falling from 1.5V to 1V 10 35 50 mV
I
BIASDCDIV
DCDIV Input Bias Current (Mode 1) V
DCDIV
= 1.5V 20 nA
V
LODCGD
DCINGOOD Output Low Voltage (Mode 1) V
DCDIV
= 1V, I
DCINGOOD
= 100µA 0 0.1 0.4 V
I
PUDCGD
DCINGOOD Pull-Up Current (Mode 1) V
DCDIV
= 1.5V, V
DCINGOOD
= 0V 1 2 6 µA
I
LKGDCGD
DCINGOOD Leakage Current (Mode 1) V
DCDIV
= 1.5V, V
DCINGOOD
= 7V ±1 µA
Battery Monitor
V
THLOBAT
Low-Battery Threshold Voltage (Modes 5, 6) V
BDIV
Falling from 1.5V to 1V ● 1.190 1.215 1.240 V
V
HYSLOBAT
Low-Battery Hysteresis Voltage (Modes 5, 6) V
BDIV
Rising from 1V to 1.5V 10 35 50 mV
I
BIASBDIV
BDIV Input Bias Current (Modes 5, 6) V
BDIV
= 1.5V 20 nA
V
LOLOBAT
LOBAT Output Low Voltage (Modes 5, 6) V
BDIV
= 1V, I
LOBAT
= 100µA 0 0.1 0.4 V
I
LKGLOBAT
LOBAT Output Leakage Current (Modes 5, 6) V
BDIV
= 1.5V, V
LOBAT
= 7V ±1 µA
R
ONBATSW
Battery Switch ON Resistance (Modes 5, 6) Each Switch Tested Independently 200 400 800 Ω
I
LKGBATSW
Battery Switch OFF Leakage (Modes 5, 6) Each Switch Tested Independently ±1 µA
Gate Drivers
V
GS(ON)
Gate-to-Source ON Voltage (GA to GF) (Modes 1, 2, 4, 5, 6) I
GS
= –1µA 5.0 5.5 7.0 V
Gate-to-Source ON Voltage (GG, GH) (Modes 2, 4) I
GS
= –1µA 4.5 5.2 7.0 V
V
GS(OFF)
Gate-to-Source OFF Voltage (Modes 1, 2, 4, 5, 6) I
GS
= 100µA 0 0.4 V
I
BSENSE
+ SENSE
+
Input Bias Current (Modes 1, 5, 6) 5 15 30 µA
I
BSENSE
– SENSE
–
Input Bias Current (Modes 1, 5, 6) 5 15 30 µA
V
SENSE
Inrush Current Limit Sense Voltage (Modes 1, 5, 6) ● 0.15 0.20 0.25 V
I
PDSAB
SAB Pull-Down Current (Modes 5, 6) V
SAB
= 10V 30 100 300 µA
I
PDSCD
SCD Pull-Down Current (Mode 1) V
SCD
= 10V 30 100 300 µA
I
PDSEF
SEF Pull-Down Current (Mode 1) V
SEF
= 10V 30 100 300 µA
I
PDSG
SG Pull-Down Current (Mode 1) V
SG
= 10V 3 mA
I
PDSH
SH Pull-Down Current (Mode 1) V
SH
= 10V 3 mA
Charge Monitor
R
ONCMON
CHGMON Switch ON Resistance (Modes 5, 6) Each Switch Tested Independently 50 150 250 Ω
I
LKGCMON
CHGMON Switch OFF Leakage (Modes 5, 6) Each Switch Tested Independently ±1 µA
Digital Inputs
V
HIDIGIN
Input High Voltage (Mode 1) All Digital Inputs ● 2V
V
LODIGIN
Input Low Voltage (Mode 1) All Digital Inputs ● 0.8 V
I
HIDIGIN
Input Leakage Current (Mode 1) All Digital Inputs, V
DIGINX
= 7V ±1 µA
I
LODIGIN
Input Leakage Current (Mode 1) V
DIGINX
= 0V (Note 3) ±1 µA
I
PUDIGIN
Input Pull-Up Current (Mode 1) V
DIGINX
= 0V (Note 4) 1 2 6 µA