LTC3225-1_15 Datasheet, PDF (14/14 Pages) Linear Technology – 150mA Supercapacitor Charger

LTC3225/LTC3225-1
TYPICAL APPLICATION
V_IN
12V
GND
V_BIAS
3.3V _C5
10μF
GND
D1
CSHD6-40C
DPAK
10A
12V Supercapacitor Back-Up Supply
+ ^C1
47μF
25V
DCAP
LT3740
HIGH EFFICIENCY
DOWN CONVERTER
V_IN+
V_OUT
LT3740
GND
GND
V_OUT
1.8V
10A
GND
D2
CMSH3-20
D3
CMSH3-20
D4
CMSH3-20
1
VM
8
V_CC
2 ^LTC2915 7
SEL1 SEL2
3 _TOL/MR
6
RT
4
GND
RST ⁵
C6
0.1μF
R7
10k
R1
2k
R2
100k
1
8
PGND OUT
2 ^LTC4441-1 7
SGND DRV_CC
3
IN
6
V_IN
4 _{EN/SHDN FB} 5
R3
332k
C7
10μF
R4
84.5k
* REQUIRES PIN 8 (GND) AND EXPOSED PAD TO BE CONNECTED TO A
THERMAL PAD ISOLATED FROM THE SYSTEM GROUND.
CHARGER 3
*
V_IN
C_OUT
LTC3225/
LTC3225-1
C2
C⁺
CX
1μF
10V
C^–
GND
R6
M4
1k
Si4410DY
M2
IRF7424
CHARGER 2
*
V_IN
C_OUT
LTC3225/
LTC3225-1
C3
C⁺
CX
1μF
10V
C^–
GND
R5
M3
1k
Si4410DY
CHARGER 1
V_IN
C_OUT
LTC3225/
LTC3225-1
C4
C⁺
CX
1μF
10V
C^–
GND
M1
IRF7424
3225 TA03
RELATED PARTS
PART NUMBER
DESCRIPTION
LTC1751-3.3/LTC1751-5 Micropower 5V/3.3V Doubler Charge Pumps
LTC3200
Constant Frequency Doubler Charge Pump
LTC3203/LTC3203B/
500mA Low Noise High Efficiency Dual Mode
LTC3203B-1/LTC3203-1 Step-Up Charge Pumps
LTC3204/LTC3204B-3.3/ Low Noise Regulating Charge Pumps
LTC3204-5
LTC3221/LTC3221-3.3/
LTC3221-5
Micropower Regulated Charge Pump
LTC3240-3.3/LTC3240-2.5 Step-Up/Step-Down Regulated Charge Pumps
LT^®3420/LT3420-1
1.4A/1A Photoflash Capacitor Charger with
Automatic Top-Off
LT3468/LT3468-1/
LT3468-2
1.4A/1A/0.7A, Photoflash Capacitor Charger
LTC3484-0/LTC3484-1/
LTC3484-2
1.4A/0.7A/1A, Photoflash Capacitor Charger
LT3485-0/LT3485-1/
LT3485-2/LT3485-3
1.4A/0.7A/1A/2A Photoflash Capacitor Charger
with Output Voltage Monitor and Integrated
IGBT
LT3750
Capacitor Charger Controller
LT3751
Capacitor Controller with Regulation
COMMENTS
I_Q = 20μA, Up to 100mA Output, MS-8 Package
Low Noise, 5V Output or Adjustable
V_IN: 2.7V to 5.5V, 3mm × 3mm 10-Lead DFN Package
Up to 150mA (LTC3204-5), Up to 50mA (LTC3204-3.3)
Up to 60mA Output
Up to 150mA Output
Charges 220μF to 320V in 3.7 Seconds from 5V, V_IN: 2.2V to 16V,
I_SD < 1μA, 10-Lead MS Package
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
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
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
Charges Any Size Capacitor, 10-Lead MS Package
Charges Any Size Capacitor, 4mm × 5mm QFN-20 Package
14 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
3225fb
LT 0610 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2008