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TCA9406DCTR 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
接口芯片
封装:
SSOP-8
描述:
TEXAS INSTRUMENTS TCA9406DCTR. 芯片, 电平转换器, 2位, 双向, SSOP-8
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引脚图在P3P4Hot
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原理图在P12
封装尺寸在P36P38P39
标记信息在P36P37
封装信息在P35P36P37P38P39
技术参数、封装参数在P5P6P35
应用领域在P1P15P16P17P18P19P20P21P22P23P24P25
电气规格在P6P7
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TCA9406DCTR数据手册
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LM117
LM117
,
LM317-N
www.ti.com
SNVS774P –MAY 2004–REVISED OCTOBER 2015
Typical Applications (continued)
9.2.3 Slow Turnon 15-V Regulator
An application of LM117 includes a PNP transistor with a capacitor to implement slow turnon functionality (see
Figure 21). As V
IN
rises, the PNP sinks current from the ADJ rail. The output voltage at start up is the addition of
the 1.25-V reference plus the drop across the base to emitter. While this is happening, the capacitor begins to
charge and eventually opens the PNP. At this point, the device functions normally, regulating the output at 15 V.
A diode is placed between C1 and V
OUT
to provide a path for the capacitor to discharge. Such controlled turnon
is useful for limiting the in-rush current.
Figure 21. Slow Turnon 15-V Regulator
Copyright © 2004–2015, Texas Instruments Incorporated Submit Documentation Feedback 17
Product Folder Links: LM117 LM317-N
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