LTC1479 LINER [Linear Technology], LTC1479 Datasheet - Page 23

• Manufacturer Part Number: LTC1479
• Description: PowerPath Controller for Dual Battery Systems
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIONS
BATTERY
BATTERY
4 Li-ION
4 Li-ION
SMART
SMART
PACK
PACK
BAT1
BAT2
R
R
BAT1
BAT2
1.05M
12.1k
R
R
205k
121k
R
R
C1
0.1 F
DC2
DC1
1%
1%
1%
1%
B2
B1
+
+
+
Si9926DY
C
10 F
C
10 F
330
BAT1
BAT2
0.1 F
C2
2.2 F
16V
SW G
DCDIV
BAT1
BAT2
V
BDIV
V
V
DCIN
BAT
CCP
CC
GND
Dual Li-Ion Battery Power Management System (Using an LT1511, 3A Charger)
+
V
SW A
+
GA
Si9926DY
Si4936DY
SW
C3
1 F
50V
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SAB
SW H
L1*
1mH
SW B
+
GB
V
U
GG
C4
1 F
50V
SW C
GG SG GH SH
GC
N
Si4936DY
SCD
SW D
LTC1479
GD
SW E
BATDIS DCIN/BAT
GE
Si4936DY
SEF
SW F
GF
Q1
2N7002
R
4.93k
1%
1 F
PROG
C8
SENSE
CHGMON
R5
500
DC/DC
FROM
R
0.033
5V
+
SENSE
DCINGOOD
(CHARGER OUTPUT)
CC
C6
10 F
CERAMIC
CHGSEL
BATSEL
R6
1k
SENSE
V
LOBAT
C9
0.33 F
BKUP
3DM
–
+
16, 23, 24
1, 4, 5, 7,
C10
200pF
100k
2N7002
R11
470k
C7
10 F
D5
BAS16LT1
19
18
11
Q2
200
(BOLD LINES INDICATE HIGH CURRENT PATHS)
R
1%
S2
R
R
10
PROG
V
COMP1
GND
+
DTA144E
CLN
BAT1
BAT2
BAT
C
ROHM
20 TO 22
LT1511
0.033
0.05
14 12
C12
1 F
R
V
R
C
22 F
TANT
S4
CC
S1
CHG
BOOST
SENSE
CLP
OVP
SPIN
NiCD
CELL
SW
UV
R12
9
10k
R
200
1%
C14
0.1 F
R4
500
MBRS340T
2
1
S3
MANAGEMENT
6
2
3
18
8
***
+
LBO
LBI
D1
**
POWER
I
*
LIM
1812LS-105 XKBC, COILCRAFT
DT1608-223, COILCRAFT
CTX20-4, COILTRONICS
LT1304
6
R1
22k
P
SW
(BACKUP)
D3
MBR0540T
C13
0.47 F
4
R10
5k
R9
6.8k
GND
SHDN
V
10 H
C5
0.1 F
5
FB
V
IN
L2**
0.1 F
CC
C15
+
C11
50pF
8
7
3
MBR0530
C
10 F
35V
ALUM
L3***
20 H
LTC1479
D1
DCIN
SMBUS
MBRS340T
D2
5V
FROM
DC/DC
DC INPUT
(FROM AC
ADAPTOR)
R3
100k
1%
R2
390k
1%
CC
TO INPUT
OF DC/DC
CONVERTER
0.25%
0.25%
23
649k
115k
R7
R8
1479 TA04