HT1117 Series

1A General Purpose LDO

Selection Table

Part No.

Output Voltage

Package

Marking

HT1117-ADJ

Adjust

SOT-223

HT1117-ADJ

HT1117-18

HT1117-25

HT1117-28

HT1117-33

HT1117-50

HT1117-18

1.8V

HT1117-25

2.5V

HT1117-28

2.85V

HT1117-33

3.3V

HT1117-50

5.0V

Note:

For lead free devices, a

²#² mark is suffixed at the end of the date code.

Block Diagram

Rev. 1.00

1

August 7, 2007

Features

2.85V, 3.3V, 5.0V or adjustable type.

Applications

General Description

The HT1117 devices are a series of three-terminal high

current low voltage regulators. They can deliver an out-

put current of 1A and can accept input voltages up to

12V. The devices are available in both adjustable and

fixed output voltage type with a range of 1.8V to 5.0V. In-

ternal current limit and thermal protection circuits pro-

vide protection against overload conditions that could

create excessive junction temperatures.

C u r r e n t

L i m i t i n g

A m p l i f i e r

B a n d g a p

R e f e r e n c e

T h e r m a l

P r o t e c t i o n

E r r o r

A m p .

G N D

A D J