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MC34268D Datasheet

  • MC34268D

  • ON Semiconductor [SCSI-2 Active Terminator Regulator]

  • 118.86KB

  • ONSEMI

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MC34268
SCSI-2 Active Terminator
Regulator
The MC34268 is a medium current, low dropout positive voltage
regulator specifically designed for use in SCSI鈥? 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 8鈥損in SOP鈥? and 3鈥損in DPAK
and SOT鈥?23 surface mount power packages.
Applications include active SCSI鈥? terminators and post
regulation of switching power supplies.
http://onsemi.com
MARKING
DIAGRAMS
8
8
1
SOP鈥?
D SUFFIX
CASE 751
1
A
L
Y
W
= Assembly Location
= Wafer Lot
= Year
= Work Week
1
2
8
7
6
5
(Top View)
NC
34268
ALYW
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
2.85 V Output Voltage for SCSI鈥? 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, SOT鈥?23 and SOP鈥? Surface Mount Power
Packages
Simplified Block Diagram
Input
1
3
Gnd
Output
Output
NC
3
Input
4
DPAK
DT SUFFIX
CASE 369A
34268
ALYWW
Thermal
Limiting
Control
Circuit
1
Current
Limit
3
SOT鈥?23
ST SUFFIX
CASE 318E
AYW
268ST
Output
4
1
2
3
Pin 1. Ground
2. Output
3. Input
4. Output
(Top View)
Ground
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 3 of this data sheet.
漏
Semiconductor Components Industries, LLC, 2000
1
April, 2000 鈥?Rev. 1
Publication Order Number:
MC34268/D

MC34268D 产品属性

  • 98

  • 集成电路 (IC)

  • PMIC - 稳压器 - 专用型

  • -

  • 转换器，SCSI-2

  • 15V

  • 1

  • 2.85V

  • 0°C ~ 125°C

  • 表面贴装

  • 8-SOIC（0.154"，3.90mm 宽）

  • 8-SOICN

  • 管件

  • MC34268DOS

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