Photoflash Flyback Transformer
EPC3205G-X & EPC3205G-X-LF
ELECTRONICS INC.
• Used as Flyback Transformer in High Voltage Photoflash Capacitor Charger
• Designed for use with Linear Technology Chip
• Add “-LF” after part number for Lead Free
• Operating Temperature : -40°C to +85°C
• UL 94V-0 Recognized Components
• UL 1446 Class B Insulation System
• Isolation : 500 Vrms
Electrical Parameters @ 25° C
PCA
Part
Number
Voltage
(Vdc)
Chipset
EPC3205G-1A(-LF)
EPC3205G-2(-LF) {
LT3468
LT3468
LT3468-2
LT3468
LT3468-2
LT3468-1
LT3420
LT3420
LT3420-1
EPC3205G-3(-LF)
EPC3205G-4(-LF)
EPC3205G-5(-LF)
EPC3205G-6(-LF)
EPC3205G-7(-LF)
EPC3205G-8(-LF)
Primary Peak
Current
(A Max.)
V in
V out
2.5-5.0
2.5-5.0
2.5-5.0
2.5-4.0
2.5-5.0
2.5-5.0
1.8-5.0
1.8-6.0
1.8-5.0
320
320
320
320
320
320
320
320
320
1.4
1.4
1.0
1.4
1.0
0.7
1.4
1.4
1.0
1
Leakage
Inductance
(µH Typ.)
Pri:Sec
@ 100 KHz,
0.1 Vrms
20.0
12.3
12.3
10.0
10.0
15.0
25.0
24.0
15.0
@ 100 KHz,
0.1 Vrms
0.200
0.130
0.130
0.200
0.300
0.300
0.130
0.080
0.100
4
Flyback
Transformer
T1
VBAT
1.8V-10V
C1
4.7µF
Sec.
3
T1
Pri.
Pri.
4
B/1
A/1
A/1
E/2
E/2
E/2
B/1
D/3
C/1
D1
VCC
2.5V-10V
C2
4.7µF
SEC
7
Sec.
C4 +
220µF
330V
Photoflash
Capacitor
LT3420
Charge
8
Pri.
Sec.
3,4
25
21
21
25
37
37
18
18
18
Pri.
2
3
6
4 VBAT RFB SW
Schematic 3
T1
0.300
0.230
0.230
0.250
0.300
0.300
0.160
0.160
0.230
Sec.
R2
51.1k
Sec.
5,6
Sec.
Trigger
Transformer
T2
6
2
Pri.
Package/
Schematic
320V
Schematic 2
1
DCR
(Ω Max.)
LT3420 320V Photoflash Capacitor Charging Circuit
Pri.
2
Primary OCL
@ 0Adc
(µH ± 15%)
1:10.2
1:10.2
1:10.2
1:10.2
1:10.2
1:10.2
1:12
1:12
1:10.2
Schematic 1
T1
Turns
Ratio
Done
9
RREF
8
CT
10
1
1
Flash
GND
5
C3
0.1µF
Notes :
Bold Lines Indicate
High Current Paths
EPC3205G-X
EPC3205G-X-LF
1. Assembly Process (Solder Composition)
SnPb
Pb-Free
2. Peak Solder Rating
225°C
260°C
1
(Unlimited, ≤30°C/60%RH)
1
(Unlimited, ≤30°C/60%RH)
(per IPC/JEDEC-J-STD-020C)
3. Moisture Sensitive Levels (MSL)
(per IPC/JEDEC-J-STD-020C)
4. Weight
5. Packaging Information
(Tube)
TBD grams
TBD grams
TBD pcs / tube
TBD pcs / tube
Package Drawings Next Page
Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
Product performance is limited to specified parameters. Data is subject to change without prior notice.
CSC3205G-X & -LF
Rev. 8
06/13/12 FT
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com
Photoflash Flyback Transformer
EPC3205G-X & EPC3205G-X-LF
ELECTRONICS INC.
Package A
Recommended
Layout
0.311
(7.90)
0.383
(9.72)
4
1
Pin 1 I.D.
Marking :
PCA
2
EPC3205G-2(-LF)
D.C.
0.311
(7.90)
0.238
(6.04)
3
0.138
Max.
(3.50)
Package B
0.350
(8.90)
1
Pin 1 I.D.
Marking :
PCA
2
EPC3205G-6(-LF)
D.C.
Package C
Recommended
Layout
0.311
(7.90)
0.422
(10.72)
4
0.350
(8.90)
1
Pin 1 I.D.
Marking :
PCA
2
EPC3205G-8(-LF)
D.C.
0.277
(7.04)
3
0.205
Max.
(5.20)
Recommended
Layout
0.383
(9.72)
4
0.311
(7.90)
0.238
(6.04)
3
0.193
Max.
(4.90)
Package D
Package E
0.319
Typ.
(8.10)
Pin 1
I.D.
1
0.146
(3.70)
0.401
Typ.
(10.20)
0.490
0.020
(12.45)
5 (0.50)
1
8
0.236
(6.00)
4
0.026
(0.65)
0.453
(11.50)
0.218
(5.54)
0.073
(1.85)
0.079
(2.00)
Side Marking :
0.012
PCA EPC3205G-7(-LF) (0.30)
D.C.
0°-8°
0°-8°
4
Pin 1 I.D.
Side Marking
D.C.
PCA EPC
0.303
(7.70)
0.008
(0.20)
Pad
Layout
0.358
(9.10)
3
Side Marking :
3205G-5(-LF)
0.193
(4.90)
0.047
(1.20)
0.079
(2.00)
0.067
(1.70)
0.024
0.218
(5.54) 6 (0.60)
0.010
(0.25)
.205
(5.20)
0.006
(0.15)
0.342
(8.70)
Pad
Layout
0.059
(1.50)
0.063
(1.60)
0.073
(1.85)
Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
Product performance is limited to specified parameters. Data is subject to change without prior notice.
CSC3205G-X & -LF
Rev. 8
06/13/12 FT
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com