Datasheet > IMP706CUA

IMP706CUA

更新时间： 2024-01-26 23:04:30

品牌	Logo	应用领域
IMP		监控
页数	文件大小	规格书
9页	167K
描述
LOW-POWER レP SUPERVISOR CIRCUITS

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中文翻译

获取价格

技术参数
数据手册

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IMP706CUA 技术参数

生命周期：	Contact Manufacturer	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.7
Is Samacsys：	N	Base Number Matches：	1

IMP706CUA 数据手册

IMP705/6/7/8, 813L

Application Information

Monitoring Voltages Other Than V_CC

Monitoring a Negative Voltage

The IMP705-708 can monitor voltages other than V using the The Power-Fail circuitry can also monitor a negative supply rail.

Power Fail circuitry. If a resistive divider is connected from the When the negative rail is OK, PFO will be LOW, and when the

voltage to be monitored to the Power Fail input, PFI, the PFO negative rail is failing (not negative enough), PFO goes HIGH

(output) will go LOW if the divider voltage goes below its 1.25V (the opposite of when positive voltages are monitored). To trigger

reference. Should hysteresis be desired, connect a resistor (equal a reset, these outputs need to be inverted: adding the resistors

to approximately 10 times the sum of the two resistors in the and transistor as shown achieves this. The RESET output will

divider) between the PFI and PFO pins. A capacitor between PFI then have the same sense as for positive voltages: good = HIGH,

and GND will reduce circuit sensitivity to input high-frequency bad = LOW. It should be noted that this circuit’s accuracy depends

noise. If it is desired to assert a RESET in addition to the PFO flag, on the V_CCline, the PFI threshold tolerance, and the resistors.

this may be achieved by connecting the PFO output to MR.

+5V

= 5V

= 12V

IMP70x

PFO

PFI

RESET

GND

PFI

RESET

GND

To Processor

130k

12V Threshold

~10.87V

5 −1.25 1.25 − V

TRIP

—

Negative Input

Voltage

705_09.eps

705_07.eps

Figure 4. Monitoring Voltages Other Than V_CC

Figure 5. Monitoring a Negative Voltage

1999 IMP, Inc.

408-432-9100/www.impweb.com

1...4 5 678 9

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