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LM3520 Datasheet(Hoja de datos) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de Pieza. LM3520
Descripción  Integrated White LED Driver with Organic LED Display Power Supply
Descarga  14 Pages
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Fabricante  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
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 4 page
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Operation Modes
LM3520 has two operating modes; Figure 2 shows main
display in PWM current mode operation, the appropriate
selection of R
FB resistor in series with four white LEDs set
the output current driving the main display. Figure 3 shows
Sub display in PFM mode, the appropriate selection of
R
SUB1 and RSUB2 resistors set the output voltage driving the
OLED subdisplay.
20128806
20128807
* Note: The current IFB1 is very small and is negligible.
20128804
FIGURE 2. Main Display
20128805
FIGURE 3. Sub Display
www.national.com
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