LM2586T-3.3 National Semiconductor, LM2586T-3.3 Datasheet - Page 16

• Manufacturer Part Number: LM2586T-3.3
• Description: Power Supply IC
• Manufacturer: National Semiconductor

Specifications of LM2586T-3.3

• Output Current: 3A
• Output Voltage: 3.3VDC
• No. Of Pins: 7
• Peak Reflow Compatible (260 C): No
• Termination Type: Through Hole
• Leaded Process Compatible: No
• Mounting Type: Through Hole
• Package / Case: 7-TO-220
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Typical Flyback Regulator Applications
TRANSFORMER SELECTION (T)
Figure 13 lists the standard transformers available for fly-
back 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 cur-
rents for each circuit.
Applications
Transformers
V
V
I
N
V
I
N
V
I
N
OUT1
OUT2
OUT3
IN
OUT1
OUT2
OUT3
1
2
3
(Max)
(Max)
(Max)
Figure 7
4V–6V
3.3V
1.4A
T7
1
FIGURE 12. Triple-Output Flyback Regulator
FIGURE 13. Transformer Selection Table
Figure 8
4V–6V
T7
5V
1A
1
Figure 9
8V–16V
0.8A
12V
16
T7
1
(Continued)
Figure 10
4V–6V
0.15A
0.15A
−12V
12V
1.2
1.2
T6
Figure 11
18V–36V
−12V
0.6A
0.6A
12V
1.2
1.2
T6
Figure 12
18V–36V
0.25A
0.25A
−12V
1.8A
1.15
1.15
12V
0.5
T5
5V
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