LTC3350_15 Datasheet, PDF (39/46 Pages) Linear Technology – High Current Supercapacitor Backup Controller and System Monitor

LTC3350
Typical Applications
Application Circuit 1. 25V to 35V, 6.4A Supercapacitor Charger with 2A Input Current Limit and 28V, 50W Backup Mode
PFO
CAPGD
SMBALERT
SCL
SDA
V_IN
25V TO 35V
25V RISING THRESHOLD
22V FALLING THRESHOLD
MN1
SiS434DN
R_SNSI
0.016Ω
C1
0.1µF
R_PF1
80.6k
R_PF2
4.53k
R_PF3
39.2k
C2
1µF
V_IN INFET VOUTM5 VOUTSP VOUTSN OUTFET
PFI
V_DD
Si1555DL
R1 R2 R3
10k 10k 10k
R7
10k
OUTFB
DRV_CC
INTV_CC
PFO
CAPGD
SMBALERT
SCL
SDA
BST
TGATE
SW
R4
100k
C5
1µF
VCC2P5
CAP_SLCT0
CAP_SLCT1
GPI
VC
LTC3350
T
R_T1
100k
RT
ITST
C_C
R5 R6
1.2nF 107k 121Ω
SGND
PGND
BGATE
ICAP
VCAP
CFP
CFN
VCAPP5
CAP4
CAP3
CAP2
CAP1
CAPRTN
CAPFB
V_OUT
28V
50W IN BACKUP
D_B
B0540WS
C_B
0.1µF
C_FBO1
120pF
C4
0.1µF
R_FBO1
665k
R_FBO2
29.4k
C3
4.7µF
MN2
SiS434DN
MN3
SiS434DN
+
C_OUT1
82µF
C_OUT2
10µF
×2
L1
6.8µH
R_SNSC
0.005Ω
C_CAP
47µF
C_F
0.1µF
C_CP5
0.1µF
R_CAP4 2.7Ω
R_CAP3 2.7Ω
R_CAP2 2.7Ω
R_CAP1 2.7Ω
R_CAPRTN 2.7Ω
+
CAP4 5F
+
CAP3 5F
+
CAP2 5F
+
CAP1 5F
R_FBC1
866k
R_FBC2
118k
3350 TA02
CAP1-4: NESSCAP ESHSR-0005C0-002R7
L1: COILCRAFT XAL7070-682ME
For more information www.linear.com/LTC3350
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