HT1117 datasheet(4/10 Pages) HOLTEK

4 / 10 page

Application Circuits

Basic Circuits

· Variable voltage type

V= V

( 1 +

)+I

OUT

REF

ADJ

Note:

C1 is required if the needed if the device is located far from filter capacitors, the recommended value is 10

mF.

C2 is required for stability, the recommended value is 10

mF.

R1 is required for regulation, the recommended value is 125

· Fixed voltage type

Note:

C1 is required if the needed if the device is located far from filter capacitors, the recommended value is 10

mF.

C2 is required for stability, the recommended value is 10

mF.

Typical Application Circuits

· 1.25V~10.5V regulator

HT1117 Series

Rev. 1.00

August 7, 2007

C 2

1 0 m F

C o m m o n

S i n g l e p o i n t G N D

V O U T

V I N

V O U T

C 1

1 0 m F

H T 1 1 1 7 - A D J

V R E F

R 1

1 2 5 W

R 2

1 k W

I A D J

A D J

C o m m o n

S i n g l e p o i n t G N D

H T 1 1 1 7

S e r i e s

C 2

1 0 m F

C 1

1 0 m F

V I N

V O U T

V I N

G N D

C 2

1 0 m F

C o m m o n

S i n g l e p o i n t G N D

V O U T

V I N

2 . 7 5 £ V I N £ 1 2 V

V O U T

C 1

1 0 m F

H T 1 1 1 7 - A D J

V R E F

R 1

1 2 5 W

R 2

1 k W

I A D J

A D J

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