LM2588S-3.3 National Semiconductor, LM2588S-3.3 Datasheet - Page 16

• Manufacturer Part Number: LM2588S-3.3
• Description: SIMPLE SWITCHER 5A Flyback Regulator with
• Manufacturer: National Semiconductor

www.national.com
Typical Flyback Regulator Applications
Transformer Selection (T)
Figure 13 lists the standard transformers available for flyback regulator applications. Included in the table are the turns ratio(s) for
each transformer, as well as the output voltages, input voltage ranges, and the maximum load currents for each circuit.
Note 16: Coilcraft Inc.,:
1102 Silver Lake Road, Cary, IL 60013: Fax: [phone]
European Headquarters, 21 Napier Place: Phone: [phone]
Wardpark North, Cumbernauld, Scotland G68 0LL: Fax: [phone]
Note 17: Pulse Engineering Inc.,: Phone: [phone]
12220 World Trade Drive, San Diego, CA 92128: Fax: [phone]
European Headquarters, Dunmore Road: Phone: [phone]
Tuam, Co. Galway, Ireland: Fax: [phone]
Note 18: Renco Electronics Inc.,: Phone: [phone]
60 Jeffryn Blvd. East, Deer Park, NY 11729: Fax: [phone]
Note 19: Schott Corp.,: Phone: [phone]
1000 Parkers Lane Road, Wayzata, MN 55391: Fax: [phone]
Transformer Footprints
Figure 15 through 32 show the footprints of each transformer, listed in Figure 14 .
Applications
Transformers
V
V
I
N
V
I
N
V
I
N
OUT1
OUT2
OUT3
IN
OUT1
1
OUT2
2
OUT3
3
Transformer
(Max)
(Max)
(Max)
Type
T1
T2
T3
T4
FIGURE 15. Coilcraft Q4434-B
Phone: [phone]
(Note 16)
Coilcraft
Q4434-B
Q4337-B
Q4343-B
Q4344-B
Top View
Figure 7
4V–6V
T1
3.3V
1.8A
T1
1
FIGURE 14. Transformer Manufacturer Guide
Coilcraft (Note 16)
FIGURE 13. Transformer Selection Table
Surface Mount
DS012420-31
Figure 8
4V–6V
1.4A
Q4435-B
Q4436-B
5V
T1
1
—
—
Manufacturers’ Part Numbers
Figure 9
8V–16V
16
1.2A
12V
T1
1
(Continued)
Pulse (Note 17)
Surface Mount
PE-68411
PE-68412
PE-68421
PE-68422
Figure 10
4V–6V
−12V
FIGURE 16. Coilcraft Q4337-B
0.3A
0.3A
12V
2.5
2.5
T2
(Note 18)
RL-5530
RL-5531
RL-5534
RL-5535
Top View
Renco
T2
Figure 11
18V–36V
−12V
12V
0.8
0.8
1A
1A
T3
67141450
67140860
67140920
67140930
(Note 19)
Schott
DS012420-32
Figure 12
18V–36V
−12V
2.5A
0.5A
0.5A
0.35
12V
0.8
0.8
T4
5V