Datasheet

2
LTC1479
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
ORDER PART
NUMBER
T
JMAX
= 100°C, θ
JA
= 95°C/W
Consult factory for Military grade parts.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
TOP VIEW
G PACKAGE (209 mils)
36-LEAD PLASTIC SSOP
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19

DCIN
DCDIV
LOBAT
GA
SAB
GB
GC
SCD
GD
GE
SEF
GF
SENSE
+

SENSE
–

V
CC

V
GG

V
+

SW
V
BKUP

BAT1
BAT2
BDIV
V
BAT

CHGMON
BATSEL
GG
SG
GH
SH
DCINGOOD
DCIN/BAT
BATDIS
3DM
CHGSEL
V
CCP

GND
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
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Supplies
V
DCIN
DCIN Operating Range (Mode 1) DCIN Selected 6 28 V
V
BAT1
Battery 1 Operating Range (Mode 5) Battery 1 Selected 6 28 V
V
BAT2
Battery 2 Operating Range (Mode 6) Battery 2 Selected 6 28 V
V
BKUP
Backup Operating Range (Mode 8) Backup Operation 6 28 V
I
DCIN
DCIN Operating Current (Mode 1) DCIN Selected 175 500 µA
I
VBAT1
Battery 1 Operating Current (Mode 5) Battery 1 Selected 150 500 µA
I
VBAT2
Battery 2 Operating Current (Mode 6) Battery 2 Selected 150 500 µA
I
VBKUP
Backup Operating Current (Mode 8) Backup Operation (V
BKUP
= 6V) 40 100 µA
V
CCP
V
CCP
Regulator Output Voltage (Modes 1, 5, 6) DCIN, Battery 1 or Battery 2 Selected ● 4.0 4.8 6.0 V
V
CC
V
CC
Regulator Output Voltage (Modes 1, 5, 6) DCIN, Battery 1 or Battery 2 Selected ● 3.3 3.6 3.9 V
V
GG
V
GG
Gate Supply Voltage (Modes 1, 5, 6) DCIN, Battery 1 or Battery 2 Selected ● 34.0 36.3 40.0 V
V
UVLO
UV Lockout Threshold (Mode 9) No Power, V
BATX
Falling from 12V 4.0 4.5 5.0 V
V
UVLOHYS
UV Lockout Hysteresis (Mode 9) No Power, V
BATX
Rising from 1V 0.2 0.5 1.0 V
V
DCIN
= 25V, V
BAT1
= 16V, V
BAT2
= 12V, T
A
= 25°C unless otherwise noted. (Note 2)
DC ELECTRICAL CHARACTERISTICS
LTC1479CG
LTC1479IG