HT7627 查看數據表（PDF） - Holtek Semiconductor

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HT7627

PFM Step-up DC/DC Converter & Voltage Detector

Holtek Semiconductor 

The hysteresis width is VHYS= VDETECT(+) - VDETECT (-)

RA

VB

V re f

RB

RC

C o m p a r a to r w ith h y s te r e s is

VC

HT7627

V D D (V O U T )

V DET

MN

The following figure shows the hysteresis effect according to the previous figure.

V DET

V D E T E C T (- )

V HYS

V D E T E C T (+ )

V OUT

Rev. 1.00

4

January 18, 2002

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