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HT1117-50 Datasheet(PDF) 1 Page - Holtek Semiconductor Inc

Part # HT1117-50
Description  1A General Purpose LDO
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT1117-50 Datasheet(HTML) 1 Page - Holtek Semiconductor Inc

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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
· Output voltage ranges: Fixed range of 1.8V, 2.5V,
2.85V, 3.3V, 5.0V or adjustable type.
· High accuracy: ±2%
· Low voltage drop: 1.1V (typ.), VOUT=5.0V at 1A
· Guaranteed output current: 1A
· Low quiescent current: 8mA (typ.)
· Integrated current limit & thermal protection circuits
· SOT-223 package
Applications
· Active SCSI terminations
· Post regulator for switching power supplies
· Low voltage microcontrollers
· Motherboard clock supplies
· Battery chargers
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.
V I N
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
V O U T
A D J


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