LM2588S-12 National Semiconductor, LM2588S-12 Datasheet - Page 16

• Manufacturer Part Number: LM2588S-12
• Description: IC, FLYBACK REGULATOR, TO-263-7
• Manufacturer: National Semiconductor

Specifications of LM2588S-12

• Primary Input Voltage: 5V
• No. Of Outputs: 1
• Output Voltage: 12V
• Output Current: 5A
• No. Of Pins: 7
• Operating Temperature Range: -40°C To +125°C
• Supply Voltage Range: 4V To 40V
• Termination Type: SMD
• 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
1.8A
T1
1
FIGURE 12. Triple-Output Flyback Regulator
FIGURE 13. Transformer Selection Table
Figure 8
4V–6V
1.4A
T1
5V
1
Figure 9
8V–16V
16
1.2A
12V
T1
1
(Continued)
Figure 10
4V–6V
−12V
0.3A
0.3A
12V
2.5
2.5
T2
Figure 11
18V–36V
−12V
12V
0.8
0.8
T3
1A
1A
Figure 12
18V–36V
−12V
2.5A
0.5A
0.5A
0.35
12V
01242030
0.8
0.8
T4
5V