L5952 데이터 시트보기 (PDF) - STMicroelectronics

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L5952

MULTIPLE MULTIFUNCTION VOLTAGE REGULATOR

STMicroelectronics 

Figure 1. Comparator Part

VIN

STCAP

ref

VOUT1

REXT1

DET1IN

REXT2

ref

VOUT1

DELAYCAP

REXT1

CEXT

1µF

DET2IN

REXT2

ref

DELAY +

DET17

DMOS

DET1

HRCAP

VOUT1

REXT3

150KΩ

CEXT2

1µF

SWEXT

DET2

DMOS

REXT1 DET3IN

VIN

REXT2

D00AU1174A

HRCap must be connected to VOUT1 at no hard reset function

DET3

DMOS

Figure 2. Reset Function

L5952

VOUT1

DET1IN

REXT1

REXT2

VIN

DET3IN

(FALLING Vth)

(RISING Vth)

REXT1 + REXT2

Vth =

* 1.24

REXT2

REXT1

REXT2

VOUT1

DET2IN

(RISING Vth)

REXT1

REXT2

D00AU1175A

DET1,2 Delay Time: T = 3000 x C <sec>

Hard Reset Time: T = –CR ln 0.7 <sec>

7/15

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