LM2586T-3.3 National Semiconductor, LM2586T-3.3 Datasheet - Page 12
![Power Supply IC](/photos/18/98/189827/4243394_sml.jpg)
LM2586T-3.3
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
Flyback Regulator Operation
(Continued)
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As shown in Figure 4, the LM2586 can be used as a flyback regulator by using a minimum number of external components. The switching waveforms of this
regulator are shown in Figure 5. Typical Performance Characteristics observed during the operation of this circuit are shown in Figure 6.
FIGURE 4. 12V Flyback Regulator Design Example
Typical Performance Characteristics
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A: Switch Voltage, 20V/div
B: Switch Current, 2A/div
C: Output Rectifier Current, 2A/div
D: Output Ripple Voltage, 50 mV/div AC-Coupled
FIGURE 5. Switching Waveforms
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