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Datasheet

ManualsBrandsLinear Technology ManualsBattery Charger ICsSuper Capacitor Backup Controller and System Monitor IC QFN
31323334353637383940
LTC3350
39
3350fc
For more information www.linear.com/LTC3350
Application Circuit 1. 25V to 35V, 6.4A Supercapacitor Charger with 2A Input Current Limit and 28V, 50W Backup Mode
V
IN
V
DD
Si1555DL
V
IN
25V TO 35V
25V RISING THRESHOLD
22V FALLING THRESHOLD
INFET
MN1
SiS434DN
MN2
SiS434DN
L1
6.8µH
R
SNSC
0.005Ω
R
CAP1
2.7Ω
R
CAP2
2.7Ω
R
CAP3
2.7Ω
R
CAP4
2.7Ω
R
CAPRTN
2.7Ω
MN3
SiS434DN
R
SNSI
0.016Ω
VOUTM5VOUTSP
LTC3350
VOUTSN OUTFET
OUTFB
PFI
C1
0.1µF
C2
1µF
R
PF1
80.6k
D
B
B0540WS
C
B
0.1µF
C3
4.7µF
C4
0.1µF
C
CAP
47µF
R
FBC1
866k
R
FBC2
118k
C
F
0.1µF
C
CP5
0.1µF
CAP1 5F
CAP1-4: NESSCAP ESHSR-0005C0-002R7
L1: COILCRAFT XAL7070-682ME
C
FBO1
120pF
C
OUT2
10µF
×2
C
OUT1
82µF
R
FBO1
665k
R
FBO2
29.4k
R
PF2
4.53k
R
PF3
39.2k
R3
10k
R7
10k
R4
100k
C5
1µF
R6
121Ω
R5
107k
C
C
1.2nF
R
T1
100k
R2
10k
R1
10k
VCC2P5
PFO
CAPGD
SMBALERT
SCL
SDA
PFO
CAPGD
SMBALERT
SCL
SDA
V
OUT
28V
50W IN BACKUP
TGATE
SW
ICAP
VCAP
CAP_SLCT0
CAP_SLCT1
VCAPP5
3350 TA02
CFP
CAP4
CAP3
CAP2
CAP1
CFN
SGND
PGND
ITST
RT
T
VC
GPI
DRV
CC
INTV
CC
BST
BGATE
+
CAP2 5F
+
CAP3 5F
+
CAP4 5F
+
+
CAPRTN
CAPFB
Typical applicaTions
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