參數(shù)資料
型號(hào): LM3812
廠(chǎng)商: National Semiconductor Corporation
英文描述: Precision Current Gauge IC with Ultra Low Loss Sense Element and PWM Output
中文描述: 精密電流計(jì)IC,與超低的失落感元素和PWM輸出
文件頁(yè)數(shù): 8/14頁(yè)
文件大?。?/td> 258K
代理商: LM3812
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
V
DD
through a 10 k
resistor. (Continued)
DS100122-7
FIGURE 3. Paralleling LM3812 for Higher Load Current
I
= 2.2(D
0.5)I
+ 2.2(D
0.5)I
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.
DS100122-8
FIGURE 4. High Voltage Operation — V
Greater Than 5.25V (High Side Sense)
(PWM output is referred to Pin 7)
www.national.com
8
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