ZSM561 Просмотр технического описания (PDF) - Diodes Incorporated.

Номер в каталоге

Компоненты Описание

производитель

ZSM561

SUPPLY VOLTAGE MONITOR

Diodes Incorporated. 

ZSM561

APPLICATION CIRCUITS

TDY

=

RCd

ln





1



−

1

VTH(mpu)





Vin 

TDY = Time (Seconds)

VTH = Microprocessor ResetThreshold

Vin = Power Supply Voltage

RB =

(VINMIN − 6)

(IQ

+

IL

hFE

)

VINMIN = The minimum input voltage provided

by the unregulated supply.

IQ = The ZSM561 quiescent current (ie 200 µA)

IL = Load current taken by the microprocessor

system.

hFE = The minimum hFE that can be expected

from the pass transistor under worst case

conditions. (ie Lowest temperature and

minimum input voltage). For the ZTX690B a

value of 250 could be used.

4-368

Share Link: