LinearVoltageRegulators Motorola Semiconductor Products, LinearVoltageRegulators Datasheet - Page 11

• Manufacturer Part Number: LinearVoltageRegulators
• Description: Analog And Interface Integratedcircuits Selector Guide & Cross Reference
• Manufacturer: Motorola Semiconductor Products

SCSI Regulator
SCSI–2 Active Terminator Regulator
MC34268D, DT
voltage 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 8–pin SOP–8 and 3–pin DPAK
surface mount power packages.
regulation of switching power supplies.
Table 5. SCSI Regulator
MC34268
MOTOROLA
40
T J = 0 to +125 C, Case 751, 369A
The MC34268 is a medium current, low dropout positive
Applications include active SCSI–2 terminators and post
D
Device
i
2.81
Min
V out
(V)
Max
2.89
Input
I sink
I sink
(mA)
800
Thermal
Limiting
Min
3.9
V in
(V)
Max
20
Control
Circuit
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 and SOP–8 Surface Mount Power
Packages
ANALOG AND INTERFACE INTEGRATED CIRCUITS
Reg line
Reg line
(%)
0.3
Current
Limit
SELECTOR GUIDE & CROSS REFERENCE
Ground
Reg load
Reg load
(%)
0.5
Output
( C)
150
T J
T J
D/751, DT
Package
Suffix/
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