Rainbow Electronics LM3822 - Manual (Page 7)

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
V
DD
through a 10 k Ω resistor.
10124905
FIGURE 1. High Side Sense
10124907
FIGURE 2. Paralleling LM3822 for Higher Load Current
I
TOTAL
= 2.2(D
1
−0.5)I
MAX
+ 2.2(D
2
−0.5)I
MAX
where D
1
is the duty cycle of PWM1 and D
2
is the duty cycle of PWM2.
Please refer to the Product Operation section for more information.
LM3822
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