LM2586SX-12 National Semiconductor, LM2586SX-12 Datasheet - Page 12
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LM2586SX-12
Manufacturer Part Number
LM2586SX-12
Description
IC MULTI CONFIG SYNC 12V TO263-7
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Up (Boost), Flyback, Forward Converterr
Datasheet
1.LM2586S-ADJNOPB.pdf
(30 pages)
Specifications of LM2586SX-12
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
12V
Current - Output
3A
Frequency - Switching
100kHz ~ 200kHz
Voltage - Input
4 ~ 40 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
D²Pak, TO-263 (7 leads + tab)
For Use With
551011367-051 - BOARD WEBENCH BUILD IT LM2586/88
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
*LM2586SX-12
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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