HT1087 데이터 시트보기 (PDF) - Holtek Semiconductor

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HT1087

0.5A General Purpose LDO

Holtek Semiconductor 

HT1087 Series

· Digitally selected outputs

V IN

V IN

VO UT

V OUT

H T 1 0 8 7 -A D J

R1

ADJ

125W

C1

C2

10mF

10mF

R2

R3

R4

R5

Rn

C om m on

In p u ts

N o te : R 2 c a n s e t th e m a x im u m v o lta g e .

· High output current positive voltage regulator

T r1

IC 1

V IN

R1

V IN

H T1087

S e r ie s

C1

GND

10mF

S in g le p o in t

GND

C om m on

VO UT

IR E G

V OUT

IO

C2

10mF

C om m on

S in g le p o in t G N D

V BE1

R 1=

,

IR E G - IC 1

(1 + b )

IO = IC 1 + IR E G

C om m on

· Increased Output voltage Circuit

V IN

V IN

C1

10mF

C om m on

H T1087

S e r ie s

GND

IS S

VO UT

C2

V XX

10mF

D1

S in g le p o in t G N D

VOUT = VXX + VD1

R1 =

VXX

ISS

V OUT

R1

C om m on

Rev. 1.10

5

October 5, 2007

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