Rainbow-electronics LM3813 Manual do Utilizador descarregar pdf (Página 8)

Typical Application Circuits In the application circuits, the 0.1 µF ceramic capacitor between pins 1 and 8

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

through a 10 kΩ resistor. (Continued)

10012207

FIGURE 3. Paralleling LM3812 for Higher Load Current

TOTAL

= 2.2(D

−0.5)I

MAX

+ 2.2(D

−0.5)I

MAX

where D

is the duty cycle of PWM1 and D

is the duty cycle of PWM2.

Please refer to the Product Operation section for more information.

LM3812/LM3813

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Rainbow-electronics LM3813 Manual do Utilizador Página 8