ACE301C27BM+ 参数 Datasheet PDF下载

 

                                                                                       

ACE301

                                             

Technology

Function description

High-precision Low Voltage Detector

High precision low temperature co-efficiency reference voltage is applied to the negative input of a

comparator. Input voltage, divided by resistor array of Ra Rb and Rc, is applied to the positive input of the

comparator. Output of the comparator controls a pair of NMOS and PMOS switches, generating the

hysteresis. Output of the comparator passes a series of buffer to drive the output CMOS pair.

+V

DET

, -V

DET

, V

HYS

can be calculated as follows:

-V

DET

=V

REF

*(1+Ra/(Rb+Rc))

+V

DET

=V

REF

*(1+(Ra+Rb)/Rb)=V

REF

*(1+(Ra+Rc)/Rb)

V

HYS

= +V

DET

-(-V

DET

)=V

REF

*(Ra+Rb+Rc)(1/Rb-1/(Rb+Rc))

VER 1.3

8