LM2596S-12 National Semiconductor, LM2596S-12 Datasheet - Page 29

• Manufacturer Part Number: LM2596S-12
• Description: DC/DC Converter IC
• Manufacturer: National Semiconductor

Specifications of LM2596S-12

• Input Voltage: 40V
• Output Current: 3A
• Output Voltage: 12V
• No. Of Pins: 5
• Termination Type: SMD
• Mounting Type: Through Hole
• Voltage Regulator Type: Buck Switching
• Output Current Max: 3A
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Application Information
TYPICAL THROUGH HOLE PC BOARD LAYOUT, ADJUSTABLE OUTPUT (1X SIZE), DOUBLE SIDED
C
C
D1 — 5A, 40V Schottky Rectifier, 1N5825
L1 — 47 µH, L39, Renco, Through Hole
R
R
C
Thermalloy Heat Sink # 7020
IN
OUT
1
2
FF
— 1 k , 1%
— Use formula in Design Procedure
— 470 µF, 50V, Aluminum Electrolytic Panasonic, “HFQ Series”
— See Figure 3 .
— 220 µF, 35V Aluminum Electrolytic Panasonic, “HFQ Series”
(Continued)
FIGURE 29. PC Board Layout
29
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