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器件3D模型￥ 20.833
TL7705ACDG4 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
电源监控芯片
封装:
SOIC-8
描述:
TEXAS INSTRUMENTS TL7705ACDG4 电压监控器, 高电平有效, 低电平有效复位, 3.5V-18V输入, SOIC-8
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3D模型
符号图
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引脚图
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页面导航:
引脚图在P3Hot
典型应用电路图在P10P11
原理图在P8P10P12P13
封装尺寸在P17P18P19P20P22P23
标记信息在P17P18P19P20
封装信息在P16P17P18P19P20P21P22P23
技术参数、封装参数在P4
应用领域在P1P31
电气规格在P5
导航目录
TL7705ACDG4数据手册
Page:
of 31 Go
若手册格式错乱，请下载阅览PDF原文件
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TL7702A
,
TL7705A
,
TL7709A
,
TL7712A
,
TL7715A
SLVS028J –APRIL 1983–REVISED JANUARY 2015
www.ti.com
11 Power Supply Recommendations
The TL77xxA devices will operate within the above specifications between 3.5 V and 18 V. These devices will
risk being damaged when powered by more than 20 V.
12 Layout
12.1 Layout Guidelines
The voltage monitor should be placed on the printed circuit board, where there are no neighboring circuits in the
which switch high currents (like bus interface circuits and power switches). When laying out the layout of the
printed circuit board special care should taken with the interconnects which carry analog signals. Beside the
SENSE input these are the C
T
and V
ref
terminals. Noise coupled into the C
T
input will lead to a reduction of the
output pulse width. Noise coupled into the V
ref
input or into the filter capacitor at this input may lead to undesired
triggering of the circuit and by this to an undesired RESET pulse. Practice shows, that this malfunction when high
currents flow over the interconnects of these capacitors to the GND terminal of the voltage monitor. To avoid
these effects, the GND terminals of these capacitors must be connected by the shortest way to the GND terminal
of the voltage monitor in so that no currents caused by other circuits flow over these wires. Figure 16 show a
layout proposal for the printed circuit board. Furthermore the resistors of the voltage divider at the SENSE input
of the TL7702 (R2 and R3 in Figure 16) have to be placed in so, that no noise may be coupled into this circuit.
12.2 Layout Example
Figure 16. Printed Circuit Layout for the Supply Voltage Supervisor
14 Submit Documentation Feedback Copyright © 1983–2015, Texas Instruments Incorporated
Product Folder Links: TL7702A TL7705A TL7709A TL7712A TL7715A
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