LM3814M-1.0 National Semiconductor, LM3814M-1.0 Datasheet - Page 8
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LM3814M-1.0
Manufacturer Part Number
LM3814M-1.0
Description
Fast Current Gauge IC with Ultra Low Loss Sense Element and PWM Output
Manufacturer
National Semiconductor
Datasheet
1.LM3814M-1.0.pdf
(14 pages)
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Part Number:
LM3814M-1.0
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Typical Application Circuits
is used for bypassing, and the 0.1µF ceramic capacitor between pins 3 and 4 is used for filtering. Shutdown (SD) is tied to
V
DD
through a 10k
FIGURE 4. High Voltage Operation — V
resistor. (Continued)
where D
Please refer to the Product Operation section for more information.
FIGURE 3. Paralleling LM3814 for Higher Load Current
1
is the duty cycle of PWM1 and D
I
TOTAL
(PWM output is referred to Pin 7)
In the application circuits, the 0.1µF ceramic capacitor between pins 1 and 8
= 2.2(D
1
−0.5)I
MAX
8
IN
Greater Than 5.25V (High Side Sense)
+ 2.2(D
2
is the duty cycle of PWM2.
2
−0.5)I
MAX
DS101013-8
DS101013-7