LTC3225/LTC3225-1
14
3225fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2008
LT 0610 REV B • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
LTC1751-3.3/LTC1751-5 Micropower 5V/3.3V Doubler Charge Pumps I
Q
= 20µA, Up to 100mA Output, MS-8 Package
LTC3200 Constant Frequency Doubler Charge Pump Low Noise, 5V Output or Adjustable
LTC3203/LTC3203B/
LTC3203B-1/LTC3203-1
500mA Low Noise High Effi ciency Dual Mode
Step-Up Charge Pumps
V
IN
: 2.7V to 5.5V, 3mm × 3mm 10-Lead DFN Package
LTC3204/LTC3204B-3.3/
LTC3204-5
Low Noise Regulating Charge Pumps Up to 150mA (LTC3204-5), Up to 50mA (LTC3204-3.3)
LTC3221/LTC3221-3.3/
LTC3221-5
Micropower Regulated Charge Pump Up to 60mA Output
LTC3240-3.3/LTC3240-2.5 Step-Up/Step-Down Regulated Charge Pumps Up to 150mA Output
LT
®
3420/LT3420-1 1.4A/1A Photofl ash Capacitor Charger with
Automatic Top-Off
Charges 220µF to 320V in 3.7 Seconds from 5V, V
IN
: 2.2V to 16V,
I
SD
< 1µA, 10-Lead MS Package
LT3468/LT3468-1/
LT3468-2
1.4A/1A/0.7A, Photofl ash Capacitor Charger V
IN
: 2.5V to 16V, Charge Time = 4.6 Seconds for the LT3468 (0V to 320V,
100µF, V
IN
= 3.6V), I
SD
< 1µA, ThinSOT™ Package
LTC3484-0/LTC3484-1/
LTC3484-2
1.4A/0.7A/1A, Photofl ash Capacitor Charger V
IN
: 1.8V to 16V, Charge Time = 4.6 Seconds for the LT3484-0 (0V to 320V,
100µF, V
IN
= 3.6V), I
SD
< 1µA, 2mm × 3mm 6-Lead DFN Package
LT3485-0/LT3485-1/
LT3485-2/LT3485-3
1.4A/0.7A/1A/2A Photofl ash Capacitor Charger
with Output Voltage Monitor and Integrated
IGBT
V
IN
: 1.8V to 10V, Charge Time = 3.7 Seconds for the LT3485-0 (0V to 320V,
100µF, V
IN
= 3.6V), I
SD
< 1µA, 3mm × 3mm 10-Lead DFN Driver
LT3750 Capacitor Charger Controller Charges Any Size Capacitor, 10-Lead MS Package
LT3751 Capacitor Controller with Regulation
Charges Any Size Capacitor, 4mm × 5mm QFN-20 Package
V
IN
LTC3225/
LTC3225-1
CHARGER 3
R6
1k
M4
Si4410DY
GND
V
OUT
1.8V
10A
C1
47µF
25V
DCAP
M2
IRF7424
C
+
C
–
CX
GND
C
OUT
V
IN
LTC3225/
LTC3225-1
CHARGER 2
R5
1k
M3
Si4410DY
M1
IRF7424
3225 TA03
C
+
C
–
CX
GND
C
OUT
V
IN
LTC3225/
LTC3225-1
CHARGER 1
C
+
C
–
CX
C4
1µF
10V
C7
10µF
C6
0.1µF
R3
332k
D4
CMSH3-20
R4
84.5k
R2
100k
R1
2k
R7
10k
C3
1µF
10V
C2
1µF
10V
GND
C
OUT
PGND
LTC4441-1
SGND
IN
DRV
CC
V
IN
EN/SHDN
8
7
6
5
1
2
3
4
FB
OUT
VM
LTC2915
SEL1
TOL/MR
SEL2
RT
GND
8
7
6
5
1
2
3
4
RST
V
CC
C5
10µF
V
BIAS
3.3V
V
IN
12V
GND
GND
10A
D3
CMSH3-20
D2
CMSH3-20
V
IN
+
GND
V
OUT
GND
LT3740
LT3740
HIGH EFFICIENCY
DOWN CONVERTER
D1
CSHD6-40C
DPAK
+
*
*
* REQUIRES PIN 8 (GND) AND EXPOSED PAD TO BE CONNECTED TO A
THERMAL PAD ISOLATED FROM THE SYSTEM GROUND.
12V Supercapacitor Back-Up Supply
