LM3822 Datasheet, PDF (7/12 Pages) National Semiconductor (TI) – Precision Current Gauge IC with Internal Zero Ohm Sense Element and PWM Output

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 kΩ resistor. (Continued)
FIGURE 2. Paralleling LM3822 for Higher Load Current
I_TOTAL = 2.2(D₁−0.5)I_MAX + 2.2(D₂−0.5)I_MAX
where D₁ is the duty cycle of PWM1 and D₂ is the duty cycle of PWM2.
Please refer to the Product Operation section for more information.
DS101249-7
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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