參數(shù)資料
型號(hào): LM2587SX-3.3/NOPB
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類(lèi): 穩(wěn)壓器
英文描述: 5 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PSSO5
封裝: TO-263, 5 PIN
文件頁(yè)數(shù): 7/27頁(yè)
文件大?。?/td> 819K
代理商: LM2587SX-3.3/NOPB
Typical Flyback Regulator Applications (Continued)
TRANSFORMER FOOTPRINTS
29, 30, 31 and Figure 32 show the footprints of each trans-
former, listed in Figure 14.
Applications
Transformers
T1
T2
T3
T4
V
IN
4V–6V
8V–16V
4V–6V
18V–36V
V
OUT1
3.3V
5V
12V
5V
I
OUT1 (Max)
1.8A
1.4A
1.2A
0.3A
1A
2.5A
N
1
2.5
0.8
0.35
V
OUT2
12V
I
OUT2 (Max)
0.3A
1A
0.5A
N
2
2.5
0.8
V
OUT3
12V
I
OUT3 (Max)
0.5A
N
3
0.8
FIGURE 13. Transformer Selection Table
Transformer
Type
Manufacturers’ Part Numbers
Coilcraft
Coilcraft (Note 15)
Pulse (Note 16)
Renco
Schott
Surface Mount
T1
Q4434-B
Q4435-B
PE-68411
RL-5530
67141450
T2
Q4337-B
Q4436-B
PE-68412
RL-5531
67140860
T3
Q4343-B
PE-68421
RL-5534
67140920
T4
Q4344-B
PE-68422
RL-5535
67140930
Note 15: Coilcraft Inc.,:
Phone: (800) 322-2645
1102 Silver Lake Road, Cary, IL 60013:
Fax: (708) 639-1469
Note 16: Pulse Engineering Inc.,:
Phone: (619) 674-8100
12220 World Trade Drive, San Diego, CA 92128:
Fax: (619) 674-8262
Note 17: Renco Electronics Inc.,:
Phone: (800) 645-5828
60 Jeffryn Blvd. East, Deer Park, NY 11729:
Fax: (516) 586-5562
Note 18: Schott Corp.,:
Phone: (612) 475-1173
1000 Parkers Lane Road, Wayzata, MN 55391:
Fax: (612) 475-1786
FIGURE 14. Transformer Manufacturer Guide
T1
01231630
Top View
FIGURE 15. Coilcraft Q4434-B
T2
01231631
Top View
FIGURE 16. Coilcraft Q4337-B
LM2587
www.national.com
15
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