LM2587S-3.3 National Semiconductor, LM2587S-3.3 Datasheet - Page 11

• Manufacturer Part Number: LM2587S-3.3
• Description: IC, FLYBACK REGULATOR, TO-263-5
• Manufacturer: National Semiconductor

Specifications of LM2587S-3.3

• Input Voltage: 40V
• Output Current: 5A
• Output Voltage: 3.3V
• No. Of Outputs: 1
• Supply Voltage Range: 4V To 40V
• No. Of Pins: 5
• Operating Temperature Range: -40°C To +125°C
• Termination Type: SMD
• Filter Terminals: SMD
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Typical Performance Characteristics
A: Switch Voltage, 10 V/divB: Switch Current, 5 A/divC: Output Rectifier Current, 5 A/divD: Output Ripple Voltage, 100 mV/div
AC-Coupled
Horizontal: 2 μs/div
Typical Flyback Regulator
Applications
Figures 7, 8, 9, 11, 12 show six typical flyback applications,
varying from single output to triple output. Each drawing con-
tains the part number(s) and manufacturer(s) for every com-
FIGURE 6. V
FIGURE 5. Switching Waveforms
OUT
Load Current Step Response
11
ponent except the transformer. For the transformer part
numbers and manufacturers names, see the table in
13. For applications with different output voltages—requiring
the LM2587-ADJ—or different output configurations that do
not match the standard configurations, refer to the Switchers
Made Simple software.
1231611
1231612
www.national.com
Figure