Flyback Power Transformer
E L E C T R O N I C S I N C .
EPC3166-X
• Used in SMPS Flyback Topology
• Designed for use with National Semiconductor Chips
LM2585 to LM2588
• UL94V-0 Recognized Components
• UL1446 Class B Insulation System
• Very Low Core Loss
• 750 Vrms Isolation
Electrical Parameters @ 25° C
Schematic
PCA
Part
Chipset
Xfmr
Code
Turns
Ratio
Voltage
Primary
Current
(Vdc)
OCL
(Amp. Max.)
Number
(µH 10%)
V out
V out
1
V out
3
Sec.
1
Sec.
2
Sec.
V in
@ 10 KHz,
2
3
Pins 1-2
0.1 Vrms
LM2587/88
LM2587/88
LM2587/88
LM2585/86
LM2587/88
LM2585/86
LM2585/86
LM2585/86
LM2585/86
LM2585/86
LM2585/86
T1
T1
T1
---
N
1.8
1.4
1.2
2.5
0.3
1.8
0.15
0.6
1.4
1.0
0.8
N
1:1
1:1
EPC3166-1
4-6
3.3
N
22
22
22
22
22
66
65
65
47
47
47
N
A
A
A
A
B
C
B
B
A
A
A
N
N
4-6
5.0
N
N
N
N
1:1
8-16
14-16
4-6
12.0
11.25
12.0
5.0
N
N
N
N
1:1
N
N
T2
T5
T6
T6
T7
T7
T7
-12
12
-12
-12
N
N
1:2.5:2.5
1:.5:1.15:1.15
1:1.2:1.2
1:1.2:1.2
1:1
EPC3166-2
EPC3166-5
EPC3166-6
N
0.3
0.25
0.15
0.6
N
0.25
N
18-36
4-6
-12
N
12.0
12.0
3.3
N
18-36
4-6
N
N
EPC3166-7
N
N
N
1:1
4-6
5.0
N
N
N
N
1:1
8-16
12.0
N
N
LM2585/2586/2587 Switching Frequency : 100 KHz
•
LM2588 Switching Frequency : 200 KHz
•
•
Note : “N” means Not Required/No Connections
•
Package
Schematic A
2
Vin
1
7
8
.787 Max.
(20.00)
Vout 1
White Dot
Pin # 1
PCA
EPC3166-X
D.C
.689 Max.
(17.50)
Side
Schematic B
Schematic C
.150 Min.
(3.80)
7
7
.150
(3.80)
.026
Vout 1
Vout 2
Vout 3
Vout 1
(.650)
8
6
2
1
8
6
1
4
5
Vin
2
1
Vout 2
Vin
.669 Max.
(17.00)
.514
5
Bottom
5
3
(13.05)
8
4
.118 Max.
(3.00)
.201
(5.10)
Unless Otherwise Specified Dimensions are in Inches /mm
.010 /.25
Product performance is limited to specified parameters. Data is subject to change without prior notice.
CSC3166-X Rev. 3 2/25/04 FT
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com