HT1087 Series
0.5A General Purpose LDO
Features
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Output voltage ranges: Fixed range of 1.5V, 1.8V,
2.5V, 3.3V, 5.0V or adjustable type.
Guaranteed output current: 0.5A
Low quiescent current: 8mA (typ.)
Integrated current limit & thermal protection circuits
SOT89, TO92 packages
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High accuracy: ±2%
Low voltage drop: 1.1V (typ.), VOUT=5.0V at 0.5A
Applications
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Active SCSI terminations
Motherboard clock supplies
Battery chargers
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Post regulator for switching power supplies
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Low voltage microcontrollers
General Description
The HT1087 devices are a series of three-terminal high
current low voltage regulators. They can deliver an out-
put current of 0.5A and can accept input voltages up to
12V. The devices are available in both adjustable and
fixed output voltage type with a range of 1.5V to 5.0V. In-
ternal current limit and thermal protection circuits pro-
vide protection against overload conditions that could
create excessive junction temperatures.
Selection Table
Part No.
HT1087-ADJ
HT1087-15
HT1087-18
HT1087-25
HT1087-33
HT1087-50
Output Voltage
Adjust
1.5V
Package
Marking
HT1087-ADJ
HT1087-15
HT1087-18
HT1087-25
HT1087-33
HT1087-50
1.8V
SOT89
TO92
2.5V
3.3V
5.0V
Note:
For lead free devices, a ²#² mark is suffixed at the end of the date code.
Block Diagram
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Rev. 1.10
1
October 5, 2007