MC34268DT ON Semiconductor, MC34268DT Datasheet

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MC34268DT

Manufacturer Part Number
MC34268DT
Description
IC REG LDO 800MA 2.85V DPAK-3
Manufacturer
ON Semiconductor
Datasheet

Specifications of MC34268DT

Applications
Converter, SCSI-2
Voltage - Input
15V
Number Of Outputs
1
Voltage - Output
2.85V
Operating Temperature
0°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
DPak, TO-252 (2 leads+tab), SC-63
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
MC34268
800 mA, 2.85 V, SCSI−2
Active Terminator, Low
Dropout Voltage Regulator
regulator specifically designed for use in SCSI−2 active termination
circuits. This device offers the circuit designer an economical
solution for precision voltage regulation, while keeping power losses
to a minimum. The regulator consists of a 1.0 V dropout composite
PNP/NPN pass transistor, current limiting, and thermal limiting.
These devices are packaged in the SOIC−8 and DPAK−3 and
SOT−223 surface mount power packages.
regulation of switching power supplies.
Features
 Semiconductor Components Industries, LLC, 2005
April, 2005 − Rev. 6
Input
The MC34268 is a medium current, low dropout positive voltage
Applications include active SCSI−2 terminators and post
Power Packages
2.85 V Output Voltage for SCSI−2 Active Termination
1.0 V Dropout
Output Current in Excess of 800 mA
Thermal Protection
Short Circuit Protection
Output Trimmed to 1.4% Tolerance
No Minimum Load Required
Space Saving DPAK−3, SOT−223 and SOIC−8 Surface Mount
Pb−Free Packages are Available
Thermal
Limiting
Simplified Block Diagram
Control
Circuit
Current
Limit
Ground
1
Output
See detailed ordering and shipping information in the package
dimensions section on page 3 of this data sheet.
1
1
8
3
3
case outline drawing) is connected to Pin 2.
Output
Heatsink surface (shown as terminal 4 in
1
ORDERING INFORMATION
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
GND
Input
1
(Top View)
http://onsemi.com
2
4
2
1
3
4
CASE 318E
CASE 751
ST SUFFIX
D SUFFIX
CASE 369A
DT SUFFIX
SOT−223
SOIC−8
DPAK−3
(Top View)
3
Publication Order Number:
Pin 1. Ground
2. Output
3. Input
4. Output
8
7
6
5
NC
NC
DIAGRAMS
Output
8
1
MARKING
ALYWW
268ST
MC34268/D
34268
34268
ALYW
AYW

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MC34268DT Summary of contents

Page 1

MC34268 800 mA, 2.85 V, SCSI−2 Active Terminator, Low Dropout Voltage Regulator The MC34268 is a medium current, low dropout positive voltage regulator specifically designed for use in SCSI−2 active termination circuits. This device offers the circuit designer an economical ...

Page 2

MAXIMUM RATINGS Power Supply Input Voltage Power Dissipation and Thermal Characteristics DT Suffix, Plastic Package, Case 369A T = 25°C, Derate Above T = 25° Thermal Resistance, Junction−to−Case Thermal Resistance, Junction−to−Air D Suffix, Plastic Package, Case 751 T ...

Page 3

... Figure 4. SOIC−8 Thermal Resistance versus P.C.B. Copper Length ORDERING INFORMATION Device MC34268D MC34268DG MC34268DR2 MC34268DR2G MC34268DT MC34268DTG MC34268DTRK MC34268DTRKG MC34268STT3 †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. V MC34268 SCSI Regulator ...

Page 4

... G C SEATING PLANE −Z− 0.25 (0.010 0.6 0.024 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. PACKAGE DIMENSIONS SOIC−8 D SUFFIX CASE 751−07 ISSUE 0.10 (0.004 ...

Page 5

... 0.13 (0.005) M *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. PACKAGE DIMENSIONS DPAK−3 DT SUFFIX CASE 369A−13 ISSUE AB SEATING −T− PLANE SOLDERING FOOTPRINT* 6.20 3.0 0.244 0.118 2 ...

Page 6

... H *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein ...

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