参数资料
型号: NCP1575D
厂商: ON Semiconductor
文件页数: 15/16页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM 8-SOIC
产品变化通告: Product Obsolescence 11/Feb/2009
标准包装: 98
PWM 型: 电流/电压模式,V²?
输出数: 1
频率 - 最大: 320kHz
电源电压: 9 V ~ 20 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: 0°C ~ 125°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 管件
NCP1575
Layout Considerations
1. The fast response time of V 2 technology increases
the IC’s sensitivity to noise on the V FB line.
Fortunately, a simple RC filter, formed by the
feedback network and a small capacitor (100 pF
works well) placed between V FB and GND filters
out most noise and provides a system practically
immune to jitter. This capacitor should be located
as close as possible to the IC.
2. The COMP capacitor should be connected via its
own path to the IC ground. The COMP capacitor
is sensitive to the intermittent ground drops caused
by switching currents. A separate ground path will
reduce the potential for jitter.
3. The V CC bypass capacitor (0.1 m F or greater)
should be located as close as possible to the IC.
This capacitor ’s connection to GND must be as
short as possible. A 10 W resistor should be placed
close to the V CC pin.
4. The IC should not be placed in the path of
switching currents. If a ground plane is used, care
should be taken by the designer to ensure that the
IC is not located over a ground or other current
return path.
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