Purpose LDO. HT1086 Datasheet

HT1086 Datasheet PDF


Part Number

HT1086

Description

1.5A General Purpose LDO

Manufacture

Holtek Semiconductor

Total Page 14 Pages
Datasheet
Download HT1086 Datasheet



HT1086
HT1086 Series
1.5A General Purpose LDO
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: 1.3V (typ.), VOUT=5.0V at 1.5A
· Guaranteed output current: 1.5A
· Low quiescent current: 8mA (typ.)
· Integrated current limit & thermal protection circuits
· SOT-223, TO-220, TO-252, TO-263 packages
Applications
· Active SCSI terminations
· Post regulator for switching power supplies
· Low voltage microcontrollers
· Motherboard clock supplies
· Battery chargers
General Description
The HT1086 devices are a series of three-terminal high
current low voltage regulators. They can deliver an out-
put current of 1.5A and can accept input voltages up to
12V. The devices are available in both adjustable and
fixed output voltage type with a range of 1.8V to 5V. In-
ternal current limit and thermal protection circuits pro-
vide protection against overload conditions that could
create excessive junction temperatures.
Selection Table
Part No.
HT1086-ADJ
HT1086-18
HT1086-25
HT1086-28
HT1086-33
HT1086-50
Output Voltage
Adjust
1.8V
2.5V
2.85V
3.3V
5.0V
Package
SOT-223
TO-220
TO-252
TO-263
Note: For lead free devices, a ²#² mark is suffixed at the end of the date code.
Block Diagram
V IN
Marking
HT1086-ADJ
HT1086-18
HT1086-25
HT1086-28
HT1086-33
HT1086-50
C u rre n t
L im itin g
A m p lifie r
T h e rm a l
P r o te c tio n
E rro r
A m p.
B andgap
R e fe re n c e
V OUT
ADJ
Rev. 1.10
GND
1
February 29, 2008

HT1086
Pin Assignment
S O T -2 2 3
H T 1 0 8 6 -X X
123
G N D / V O U T V IN
ADJ
T O -2 2 0
H T 1 0 8 6 -X X
123
G N D / V O U T V IN
ADJ
T O -2 5 2
H T 1 0 8 6 -X X
123
VO UT
GND/
ADJ
V IN
HT1086 Series
T O -2 6 3
H T 1 0 8 6 -X X
123
VO UT
GND/
ADJ
V IN
Absolute Maximum Ratings*
Input Supply Voltage ..................VSS-0.3V to VSS+13V
Storage Temperature ...........................-50°C to 125°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed
in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.
²*² Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating Ratings in-
dicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits.
The guaranteed specifications apply only for the test conditions listed.
Recommended Operating Conditions
Input Supply Voltage ..................VSS-0.3V to VSS+12V
Ambient Temperature ............................-40°C to 85°C
Thermal Information
Symbol
Parameter
qJA
Thermal Resistance
(Junction to Ambient)
PD Power Dissipation
Note: PD is measured at Ta= 25°C
Package
SOT-223
TO-220
TO-252
TO-263
SOT-223
TO-220
TO-252
TO-263
Max.
134
50
80
60
0.75
2
1.27
1.67
Unit
°C/W
°C/W
°C/W
°C/W
W
W
W
W
Rev. 1.10
2 February 29, 2008




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