LM3822 National Semiconductor, LM3822 Datasheet - Page 7
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LM3822
Manufacturer Part Number
LM3822
Description
Precision Current Gauge IC with Internal Zero Ohm Sense Element and PWM Output
Manufacturer
National Semiconductor
Datasheet
1.LM3822.pdf
(12 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM3822MM-1.0
Manufacturer:
NS
Quantity:
1 334
Company:
Part Number:
LM3822MM-2.0
Manufacturer:
NSC
Quantity:
400
Typical Application Circuits
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
FIGURE 3. High Voltage Operation — V
resistor. (Continued)
where D
Please refer to the Product Operation section for more information.
FIGURE 2. Paralleling LM3822 for Higher Load Current
1
is the duty cycle of PWM1 and D
I
TOTAL
(PWM output is referred to Pin 6)
In the application circuits, the 0.1 µF ceramic capacitor between pins 1 and 2
= 2.2(D
1
−0.5)I
MAX
7
IN
Greater Than 5.5V (High Side Sense)
+ 2.2(D
2
is the duty cycle of PWM2.
2
−0.5)I
MAX
DS101249-8
DS101249-7
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