LM3478MM National Semiconductor, LM3478MM Datasheet - Page 14

• Manufacturer Part Number: LM3478MM
• Description: Pulse Width Modulation (PWM) Controller IC
• Manufacturer: National Semiconductor

Specifications of LM3478MM

• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Mounting Type: Surface Mount
• Features: High Efficiency
• Package / Case: 8-MSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Typical Applications
(Continued)
10135522
FIGURE 8. Simplified Boost Converter Diagram (a) First cycle of operation. (b) Second cycle of operation
POWER INDUCTOR SELECTION
The inductor is one of the two energy storage elements in a
boost converter. Figure 9 shows how the inductor current
varies during a switching cycle. The current through an
inductor is quantified as:
10135524
FIGURE 9. A. Inductor current B. Diode current
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