Linear Technology Analog Devices LT8708-1, Datasheet

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LT8708-1
31
Rev 0
For more information www.analog.com
+
–
+
–
CSPOUT
CSNOUT EXT
V
CC
VOUTLOMON
FBOUT
INT
V
CC
ICN ICP
GA
TEV
CC
IMON_ON IMON_OP
IMON_INP IMON_INN CLKOUT
SYNC
SS
RT
V
C
MODE
CSNIN
TG1
BOOST1
SW1
BG1
CSP
CSN
LT8708
GND
BG2
SW2
BOOST2
TG2
CSPIN V
INCHIP
SHDN FBIN VINHIMON SWEN LDO33 DIR RVSOFF
FWD (3V)
RVS (0V)
CSPOUT
CSNOUT
EXT
V
CC
INT
V
CC
ICN ICP
GA
TEV
CC
IMON_ON IMON_OP
IMON_INP IMON_INN CLKOUT
SYNC
SS
RT
V
C
MODE
CSNIN
TG1
BOOST1
SW1
BG1
CSP
CSN LT8708-1
GND
BG2
SW2
BOOST2
TG2
CSPIN V
INCHIP
SHDN FBIN VOUTLOMON FBOUT VINHIMON DIR LDO33 SWEN RVSOFF
+
+
D
B1
D
B2
TO
LT8708’S BOOST1
TO
LT8708’S BOOST2
TO DIODE
D
B1
LD033
V
BA
T2
87081 T
A03a
10V TO 16V BA
TTER
Y
V
BA
T1
10V TO 16V
BA
TTER
Y
TO DIODE
D
B2
LD033
I
OUT
I
IN
M1
–M4, M8
–M11
: INFINEON BSC010N04LS
C
OUT3
, C
IN3
: 470
μF
, 50V
C
IN2
, C
IN7
,
C
OUT1
, C
OUT5
: 10
µF
, 50V
, X7R
D
B1
, D
B2
, D
B3
, D
B4
: CENTRAL SEMI CMMR1U-02-L
TE
L1, L2: 3.3
μH, WUR
TH 701014330
XOR:
DIODES INC. 74AHC1G86SE-7
M5
–M7: T2N7002AK, TOSHIBA
C
IN4
, C
IN5
,
C
OUT4
, C
OUT6
: SUNCON, 18
μF
, 40V
40HVP18M
*SEE THE UNI AND BIDIRECTIONAL CONDUCTION SECTION OF THE L
T8708
DA
TA SHEET
D
B3
D
B4
TO
LT8708-1’S
BOOST1
TO
LT7081’S BOOST2
TO DIODE
D
B3
TO DIODE
D
B4
LD033
LD033
POWER TRANSFER DECISION LOGIC
100k
27.4k
M6
M5
12.1k
M7
XOR
68.1k
220pF
4.7
μF
127k 100k
20k
54.9k
1nF
33nF
10k
365k
1μ
F
4.7
nF
23.7k
47
nF
17.4k
47
nF
4.7
nF
17.4k
23.7k
4.7
μF
3.3
Ω
4.7
μF
100nF
47nF
100
Ω
12.1k 133k
20k 154k
100k
C
OUT3
C
OUT2
C
OUT4
×2
C
OUT1
2m
Ω
1Ω
0.22
μF
M4
M2
M3
L1 3.3
μH
1Ω
2m
Ω
10
Ω
10
Ω
1nF
1nF
1Ω
0.22
μF
1Ω
M1
C
IN3
C
IN2
C
IN1
C
IN4
×2
2m
Ω
1μ
F
100nF
47nF
100
Ω
100k
665k
DIR_CTRL
93.1k
17.4k
200
Ω
4.7nF
17.4k
200
Ω
4.7nF
4.7
μF
127k 100k
54.9k
470pF
8.2nF
10k
365k
1μ
F
4.7
nF
17.4k
4.7
nF
17.4k
4.7
nF
17.4k
4.7
μF
3.3
Ω
4.7
μF
100nF
47nF
100
Ω
C
OUT6
C
OUT7
×2
C
OUT5
2m
Ω
1Ω
0.22
μF
M11
M9
M10
L2 3.3
μH
1Ω
2m
Ω
10
Ω
10
Ω
1nF
1nF
1Ω
0.22
μF
1Ω
M8
C
IN7
C
IN6
C
IN5
×2
2m
Ω
1μ
F
100nF
47nF
100
Ω
100k
665k
120kHz
17.4k
200
Ω
10
nF
TYPICAL APPLICATIONS
2-Phase 12V Bidirectional Dual Battery System with FHCM and RHCM