LTC1479_15 Datasheet, PDF (2/24 Pages) Linear Technology – PowerPath Controller for Dual Battery Systems

LTC1479
ABSOLUTE MAXIMUM RATINGS
DCIN, BAT1, BAT2 Supply Voltages .......... – 0.3V to 32V
SENSE ⁺, SENSE ^–, V_BAT, V ⁺ ..................... – 0.3V to 32V
GA, GB, GC, GD, GE, GF, GG, GH .............. – 0.3V to 42V
SAB, SCD, SEF, SG, SH ............................ – 0.3V to 32V
SW, V_GG ................................................... – 0.3V to 42V
DCDIV, BDIV ............................................ – 0.3V to 5.5V
All Logic Inputs (Note 1).......................... – 0.3V to 7.5V
All Logic Outputs (Note 1) ....................... – 0.3V to 7.5V
V_CC Regulator Output Current ................................ 1mA
V_CCP Regulator Output Current .............................. 1mA
V⁺ Output Current .................................................. 1mA
V_GG Regulator Output Current ............................ 100µA
Operating Temperature
LTC1479CG ............................................. 0°C to 70°C
LTC1479IG ........................................ – 40°C to 85°C
Junction Temperature........................................... 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
DCIN 1
DCDIV 2
LOBAT 3
GA 4
SAB 5
GB 6
GC 7
SCD 8
GD 9
GE 10
SEF 11
GF 12
SENSE⁺ 13
SENSE ^– 14
V_CC 15
V_GG 16
V ⁺ 17
SW 18
36 V_BKUP
35 BAT1
34 BAT2
33 BDIV
32 V_BAT
31 CHGMON
30 BATSEL
29 GG
28 SG
27 GH
26 SH
25 DCINGOOD
24 DCIN/BAT
23 BATDIS
22 3DM
21 CHGSEL
20 V_CCP
19 GND
G PACKAGE (209 mils)
36-LEAD PLASTIC SSOP
T_JMAX = 100°C, θ_JA = 95°C/ W
Consult factory for Military grade parts.
ORDER PART
NUMBER
LTC1479CG
LTC1479IG
DC ELECTRICAL CHARACTERISTICS
V_DCIN = 25V, V_BAT1 = 16V, V_BAT2 = 12V, T_A = 25°C unless otherwise noted. (Note 2)
SYMBOL PARAMETER
Power Supplies
V_DCIN
V_BAT1
V_BAT2
V_BKUP
I_DCIN
I_VBAT1
I_VBAT2
I_VBKUP
V_CCP
V_CC
V_GG
V_UVLO
V_UVLOHYS
DCIN Operating Range
Battery 1 Operating Range
Battery 2 Operating Range
Backup Operating Range
DCIN Operating Current
Battery 1 Operating Current
Battery 2 Operating Current
Backup Operating Current
V_CCP Regulator Output Voltage
V_CC Regulator Output Voltage
V_GG Gate Supply Voltage
UV Lockout Threshold
UV Lockout Hysteresis
CONDITIONS
MIN TYP MAX
(Mode 1) DCIN Selected
6
28
(Mode 5) Battery 1 Selected
6
28
(Mode 6) Battery 2 Selected
6
28
(Mode 8) Backup Operation
6
28
(Mode 1) DCIN Selected
175 500
(Mode 5) Battery 1 Selected
150 500
(Mode 6) Battery 2 Selected
150 500
(Mode 8) Backup Operation (V_BKUP = 6V)
40
100
(Modes 1, 5, 6) DCIN, Battery 1 or Battery 2 Selected q 4.0
4.8
6.0
(Modes 1, 5, 6) DCIN, Battery 1 or Battery 2 Selected q 3.3
3.6
3.9
(Modes 1, 5, 6) DCIN, Battery 1 or Battery 2 Selected q 34.0 36.3 40.0
(Mode 9) No Power, V_BATX Falling from 12V
(Mode 9) No Power, V_BATX Rising from 1V
4.0
4.5
5.0
0.2
0.5
1.0
UNITS
V
V
V
V
µA
µA
µA
µA
V
V
V
V
V
2