LM2585S-5.0 National Semiconductor, LM2585S-5.0 Datasheet - Page 14
LM2585S-5.0
Manufacturer Part Number
LM2585S-5.0
Description
DC/DC Converter IC
Manufacturer
National Semiconductor
Specifications of LM2585S-5.0
Input Voltage
40V
Output Voltage
5V
No. Of Pins
5
Termination Type
SMD
Mounting Type
Through Hole
Output Current Max
0.5A
Peak Reflow Compatible (260 C)
No
Supply Voltage Max
40V
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM2585S-5.0
Manufacturer:
TI/德州仪器
Quantity:
20 000
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 15: Coilcraft Inc.
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
Applications
Transformers
V
V
I
N
V
I
N
V
I
N
OUT1
OUT2
OUT3
IN
OUT1
1
OUT2
2
OUT3
3
former
Trans-
Type
T5
T6
T7
(Max)
(Max)
(Max)
(Note 15)
Coilcraft
Q4338-B
Q4339-B
S6000-A
Phone: (800) 322-2645
Figure 7
4V–6V
3.3V
1.4A
T7
1
Surface Mount
(Note 15)
Coilcraft
Q4437-B
Q4438-B
FIGURE 14. Transformer Manufacturer Guide
S6057-A
FIGURE 13. Transformer Selection Table
Figure 8
4V–6V
5V
1A
T7
1
Manufacturers’ Part Numbers
Surface Mount
Figure 9
8V–16V
PE-68413
PE-68414
(Note 16)
0.8A
12V
14
T7
1
Pulse
—
(Continued)
Figure 10
4V–6V
0.15A
0.15A
−12V
12V
1.2
1.2
T6
PE-68482
(Note 16)
Pulse
—
—
Figure 11
18V–36V
−12V
0.6A
0.6A
12V
(Note 17)
1.2
1.2
T6
RL-5532
RL-5533
RL-5751
Renco
Figure 12
18V–36V
67140890
67140900
(Note 18)
0.25A
0.25A
−12V
Schott
1.8A
1.15
1.15
26606
12V
0.5
T5
5V