HT1087-15 HOLTEK [Holtek Semiconductor Inc], HT1087-15 Datasheet

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HT1087-15

Manufacturer Part Number
HT1087-15
Description
0.5A General Purpose LDO
Manufacturer
HOLTEK [Holtek Semiconductor Inc]
Datasheet
Features
Applications
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
Selection Table
Note:
Block Diagram
Rev. 1.10
Output voltage ranges: Fixed range of 1.5V, 1.8V,
2.5V, 3.3V, 5.0V or adjustable type.
High accuracy: 2%
Low voltage drop: 1.1V (typ.), V
Active SCSI terminations
Post regulator for switching power supplies
Low voltage microcontrollers
For lead free devices, a # mark is suffixed at the end of the date code.
HT1087-ADJ
HT1087-15
HT1087-18
HT1087-25
HT1087-33
HT1087-50
Part No.
OUT
Output Voltage
=5.0V at 0.5A
Adjust
1.5V
1.8V
2.5V
3.3V
5.0V
0.5A General Purpose LDO
1
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.
Guaranteed output current: 0.5A
Low quiescent current: 8mA (typ.)
Integrated current limit & thermal protection circuits
SOT89, TO92 packages
Motherboard clock supplies
Battery chargers
Package
SOT89
TO92
HT1087 Series
HT1087-ADJ
HT1087-15
HT1087-18
HT1087-25
HT1087-33
HT1087-50
Marking
October 5, 2007

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HT1087-15 Summary of contents

Page 1

... In- ternal current limit and thermal protection circuits pro- vide protection against overload conditions that could create excessive junction temperatures. Package Adjust 1.5V 1.8V SOT89 TO92 2.5V 3.3V 5.0V 1 HT1087 Series Marking HT1087-ADJ HT1087-15 HT1087-18 HT1087-25 HT1087-33 HT1087-50 October 5, 2007 ...

Page 2

... Thermal Resistance (Junction to Ambient) JA (Assume no ambient airflow, no heat sink) P Power Dissipation D Note measured at Ta Rev. 1.10 +13V Storage Temperature ........................... 125 C SS +12V Ambient Temperature ............................ Package Max. 200 SOT-89 TO-92 200 SOT-89 0.5 TO-92 0.5 2 HT1087 Series Unit C/W C October 5, 2007 ...

Page 3

... V 4. Current limit is measured by pulsing for a short time. Rev. 1. +1.5V, I =10mA, unless otherwise specified (see note OUT O Test Conditions Min. 1.225 2.75V V 12V IN HT1087-15 1.470 HT1087-18 1.764 HT1087-25 2.450 HT1087-33 3.234 HT1087-50 4.900 I =0.5A 1 OUT 2.75V V 12V ...

Page 4

... C1 is required if the needed if the device is located far from filter capacitors, the recommended value required for stability, the recommended value Typical Application Circuits 1.25~10.5V regulator £ £ m Rev. 1. OUT REF ADJ OUT REF ADJ R1 4 HT1087 Series October 5, 2007 ...

Page 5

... Digitally selected outputs m High output current positive voltage regulator m Increased Output voltage Circuit m Rev. 1. OUT HT1087 Series m October 5, 2007 ...

Page 6

... Dual Supply Circuit m Tracking Voltage Regulator m Rev. 1. OUT1 XX2 XX1 OUT2 XX2 OUT HT1087 Series m October 5, 2007 ...

Page 7

... Package Information 3-Pin SOT89 Outline Dimensions Symbol Rev. 1.10 Dimensions in mil Min. Nom. 173 155 HT1087 Series Max. 181 72 102 47 167 October 5, 2007 ...

Page 8

... TO92 Outline Dimensions Symbol Rev. 1.10 Dimensions in mil Min. Nom. 170 170 500 130 HT1087 Series Max. 200 200 20 110 55 65 160 18 6 October 5, 2007 ...

Page 9

... Product Tape and Reel Specifications Reel Dimensions SOT89 Symbol Description A Reel Outer Diameter B Reel Inner Diameter C Spindle Hole Diameter D Key Slit Width T1 Space Between Flange T2 Reel Thickness Rev. 1.10 HT1087 Series Dimensions in mm 180 1.0 62 1.5 12.75+0.15 1.9 0.15 12.4+0.2 17 0.4 9 October 5, 2007 ...

Page 10

... TO92 Reel Dimensions (Unit: mm) Rev. 1.10 HT1087 Series 10 October 5, 2007 ...

Page 11

... Carrier Tape Width P Cavity Pitch E Perforation Position F Cavity to Perforation (Width Direction) D Perforation Diameter D1 Cavity Hole Diameter P0 Perforation Pitch P1 Cavity to Perforation (Length Direction) A0 Cavity Length B0 Cavity Width K0 Cavity Depth t Carrier Tape Thickness C Cover Tape Width Rev. 1.10 HT1087 Series Dimensions in mm 12.0+0.3 0.1 8.0 0.1 1.75 0.1 5.5 0.05 1.5+0.1 1.5+0.1 4.0 0.1 2.0 0.10 4.8 0.1 4.5 0.1 1.8 0.1 0.30 0.013 9.3 11 October 5, 2007 ...

Page 12

... Hold-down Tape Position 2 H Lead Clinch Height 0 H Component Height 1 D Perforation Diameter 0 t Taped Lead Thickness H Component Base Height Note: Thickness less than 0.38 0.05mm~0.5mm P0 Accumulated pitch tolerance: 1mm/20pitches Bracketed figures are for consultation only Rev. 1.10 HT1087 Series Dimensions in mm (2.5) 12.7 1.0 12.7 0.3 6.35 0.4 2.5+0.4 0.1 2.5+0.4 0.1 0 0.1 18.0+1.0 0.5 6.0 0.5 9.0 0.5 (0.5) 16.0 0.5 Less than 24.7 4.0 0.2 0.7 0.2 19 ...

Page 13

... Holtek s products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.10 HT1087 Series 13 October 5, 2007 ...

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