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LT3420EMS#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
16
LT3420/LT3420-1
3420fb
3420 TA01
+
V
CC
CHARGE
DONE
SEC
R
REF
LT3420
V
BAT
R
FB
SW
C
T
GND
C2
4.7µF
C3
0.1µF
C1
4.7µF
V
BAT
1.8V TO 6V
V
CC
2.5V TO 10V
R1
52.3k
2
4
9
8
10 5
36
7
1
2
4
9
8
10 5
36
7
1
T1
1:12
320V
3, 4
5, 6 8
1
R2
2k
D1
C1, C2, C4, C5, C6, C7: 4.7µF, X5R or X7R, 10V
T1-T3: TDK SRW10EPC-U01H003 FLYBACK TRANSFORMER
D1-D3: VISHAY GSD2004S SOT-23
DUAL DIODE. DIODES CONNECTED IN SERIES
Q1: 2N3904 OR EQUIVALENT
* CAN CHARGE ANY SIZE PHOTOFLASH CAPACITOR
** USE AS MANY SLAVE CHARGERS AS NEEDED.
DANGER HIGH VOLTAGE
OPERATION BY HIGH VOLTAGE
TRAINED PERSONEL ONLY
650µF*
350V
PHOTOFLASH
CAPACITOR
V
CC
CHARGE
DONE
SEC
R
REF
LT3420
V
BAT
R
FB
SW
C
T
GND
C5
4.7µF
C4
4.7µF
V
BAT
T2
1:12
3, 4
5, 6
3, 4
5, 6
8
1
2
4
9
8
10 5
36
7
1
1
D2
SLAVE**
CHARGER
MASTER
CHARGER
SLAVE**
CHARGER
V
CC
CHARGE
DONE
SEC
R
REF
LT3420
V
BAT
R
FB
SW
C
T
GND
C7
4.7µF
C6
4.7µF
V
BAT
T3
1:12
8
1
D3
R4
100k
R3
100k
V
CC
V
CC
Q1
2N3904
CHARGE
TYPICAL APPLICATIO S
U
Professional Charger uses Multiple LT3420 Circuits in Parallel to Charge Large Photoflash Capacitors Quickly
LT3420/LT3420-1
17
3420fb
TYPICAL APPLICATIO S
U
3420 TA02
+
V
CC
CHARGE
DONE
SEC
R
REF
LT3420
V
BAT
R
FB
SW
C
T
GND
C2
4.7µF
C3
0.1µF
C1
4.7µF
V
BAT
1.8V TO 5V
V
CC
2.5V TO 10V
CHARGE
DONE
R1
47.5k
T1*
1:12
300V
2
1
3
5
R2
2k
D1
C1: 4.7µF, X5R or X7R, 6.3V
C2: 4.7µF, X5R or X7R, 10V
C4: RUBYCON 220µF PHOTOFLASH CAPACITOR
D1: VISHAY GSD2004S SOT-23
DUAL DIODE. DIODES CONNECTED IN SERIES
T1: KIJIMA MUSEN SBL-6.4
* MAXIMUM AMBIENT TEMPERATURE OF 60°C DICTATED BY TRANSFORMER
DANGER HIGH VOLTAGE
OPERATION BY HIGH VOLTAGE
TRAINED PERSONEL ONLY
C4
220µF
330V
PHOTOFLASH
CAPACITOR
4
9
8
10 5
1
7
632
V
OUT
(V)
50
EFFICIENCY (%)
90
80
70
60
50
40
100
150 200 250
3420 TA03
300 350
V
IN
= 3.3V
V
CC
= V
BAT
= V
IN
V
IN
= 5V
Efficiency
LT3420 Photoflash Charging Circuit Uses Small Transformer
18
LT3420/LT3420-1
3420fb
PACKAGE DESCRIPTIO
U
MS Package
10-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1661)
MSOP (MS) 0603
0.53 ± 0.152
(.021 ± .006)
SEATING
PLANE
0.18
(.007)
1.10
(.043)
MAX
0.17 – 0.27
(.007 – .011)
TYP
0.127
± 0.076
(.005 ± .003)
0.86
(.034)
REF
0.50
(.0197)
BSC
12
3
45
4.90 ± 0.152
(.193 ± .006)
0.497 ± 0.076
(.0196 ± .003)
REF
8910
7
6
3.00 ± 0.102
(.118 ± .004)
(NOTE 3)
3.00 ± 0.102
(.118 ± .004)
(NOTE 4)
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
0.254
(.010)
0° – 6° TYP
DETAIL “A”
DETAIL “A”
GAUGE PLANE
5.23
(.206)
MIN
3.20 – 3.45
(.126 – .136)
0.889 ± 0.127
(.035
± .005)
RECOMMENDED SOLDER PAD LAYOUT
0.305
± 0.038
(.0120
± .0015)
TYP
0.50
(.0197)
BSC
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LT3420EMS#PBF

Mfr. #:
Buy LT3420EMS#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 1.4A Photoflash Capacitor Charger
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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