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

LTC3350
Typical Application
12V PCle Backup Controller
PFO
CAPGD
SMBALERT
SCL
SDA
V_IN
11V TO 20V
C1
0.1µF
R_PF1
806k
V_DD
R_PF2
R1 R2 R3 ^100k
10k 10k 10k
MN1
SiS438DN
R_SNSI
0.016Ω
C2
1µF
V_IN INFET VOUTM5 VOUTSP VOUTSN OUTFET
PFI
OUTFB
DRV_CC
INTV_CC
PFO
CAPGD
SMBALERT
SCL
SDA
BST
TGATE
SW
VCC2P5
R4
100k
C5
1µF
CAP_SLCT0
CAP_SLCT1
GPI
VC
T
R_T1
100k
RT
ITST
C_C
R5 R6
10nF 71.5k 121Ω
GND
PGND
LTC3350
BGATE
ICAP
VCAP
CFP
CFN
VCAPP5
CAP4
CAP3
CAP2
CAP1
CAPRTN
CAPFB
D_B
1N4448HWT
C_B
0.1µF
C_FBO1
120pF
R_FBO1
649k
C4
0.1µF
R_FBO2
162k
C3
4.7µF
MN2
BSZ060NE2LS
MN3
BSZ060NE2LS
MN4
SiS438DN
C_OUT1
47µF
×2
C_OUT2
2.2µF
×2
V_OUT
6V
25W IN BACKUP
L1
3.3µH
R_SNSC
0.006Ω
C_CAP
22µF
×4
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 10F
+
CAP3 10F
+
CAP2 10F
+
CAP1 10F
R_FBC1
866k
R_FBC2
118k
3350 TA09
CAP1-4: NESSCAP ESHSR-0010C0-002R7
L1: COILCRAFT XAL7030-332ME
Related Parts
PART NUMBER DESCRIPTION
COMMENTS
Power Management
LTC3128
3A Monolithic Buck-Boost Supercapacitor Charger
and Balancer with Accurate Input Current Limit
±2% Accurate Average Input Current Limit Programmable to 3A, Active Charge
Balancing, Charges 1 or 2 Capacitors, V_IN Range: 1.73V to 5.5V, V_OUT Range:
1.8V to 5.5V, 20-Lead (4mm × 5mm × 0.75mm) QFN and 24-Lead TSSOP
Packages
LTC3226
2-Cell Supercapacitor Charger with Backup
PowerPath Controller
1x/2x Multimode Charge Pump Supercapacitor Charger, Automatic Cell
Balancing, PowerPath, 2A LDO Backup Supply, Automatic Main/Backup
Switchover, 2.5V to 5.5V, 16-Lead 3mm × 3mm QFN Package
LTC3355
20V, 1A Buck DC/DC with Integrated SCAP Charger
and Backup Regulator
V_IN: 3V to 20V, V_OUT: 2.7V to 5V, 1A Main Buck Regulator, 5A Boost Backup
Regulator Powered from Single Supercapacitor, Overvoltage Protection, 20-
Lead 4mm × 4mm QFN Package.
LTC3625
1A High Efficiency 2-Cell Supercapacitor Charger
with Automatic Cell Balancing
High Efficiency Step-Up/Step-Down Charging of Two Series Supercapacitors.
Automatic Cell Balancing. Programmable Charging Current to 500mA (Single
Inductor), 1A (Dual Inductor). 12-Lead 3mm × 4mm DFN Package
LTC4110
Battery Backup System Manager
Complete Backup Battery Manager for Li-Ion/Polymer, Lead Acid, NiMH/
NiCd Batteries and Supercapacitors. Input Supply Range: 4.5V to 19V,
Programmable Charge Current Up to 3A, 38-Lead 5mm × 7mm QFN Package.
LTC4425
Linear SuperCap Charger with Current-Limited Ideal
Diode and V/I Monitor
Constant-Current/Constant-Voltage Linear Charger for 2-Cell Series
Supercapacitor Stack. V_IN: Li-Ion/Polymer Battery, a USB Port, or a 2.7V to
5.5V Current-Limited Supply. 2A Charge Current, Automatic Cell Balancing,
Shutdown Current <2μA. 12-Pin 3mm × 3mm DFN or 12-Lead MSOP Package
3350fb
46 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 950_F3_o5_{r m}-7_o4_r1_e 7_{information www.linear.com/LTC3350}
[phone] ^● FAX: [phone] ^● www.linear.com/LTC3350
LT 0115 REV B• PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2014