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LM3488 Datasheet(PDF) 16 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LM3488
Description  High Efficiency Low-Side N-Channel Controller for Switching Regulators
PDF  24 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3488 Datasheet(HTML) 16 Page - National Semiconductor (TI)

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Typical Applications (Continued)
POWER INDUCTOR SELECTION
The inductor is one of the two energy storage elements in a
boost converter. Figure 11 shows how the inductor current
varies during a switching cycle. The current through an
inductor is quantified as:
If V
L(t) is constant, diL(t)/dt must be constant. Hence, for a
given input voltage and output voltage, the current in the
inductor changes at a constant rate.
10138822
FIGURE 10. Simplified Boost Converter Diagram (a) First cycle of operation. (b) Second cycle of operation
10138824
FIGURE 11. A. Inductor current B. Diode current
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