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LM3822 Datasheet(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza LM3822
Descripción Electrónicos  Precision Current Gauge IC with Internal Zero Ohm Sense Element and PWM Output
PDF  12 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3822 Datasheet(HTML) 7 Page - National Semiconductor (TI)

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Typical Application Circuits In the application circuits, the 0.1 µF ceramic capacitor between pins 1 and 2
is used for bypassing, and the 0.1 µF ceramic capacitor between pins 3 and 4 is used for filtering. Shutdown (SD) is tied to
VDD through a 10 k
Ω resistor. (Continued)
DS101249-7
FIGURE 2. Paralleling LM3822 for Higher Load Current
I
TOTAL = 2.2(D1−0.5)IMAX + 2.2(D2−0.5)IMAX
where D
1 is the duty cycle of PWM1 and D2 is the duty cycle of PWM2.
Please refer to the Product Operation section for more information.
DS101249-8
FIGURE 3. High Voltage Operation — V
IN Greater Than 5.5V (High Side Sense)
(PWM output is referred to Pin 6)
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