MC34268: 2.85 V, 800 mA SCSI-2 Active Terminator, Low Dropout Linear Voltage Regulator

The MC34268 is a medium current, low dropout (LDO) positive linear 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 linear voltage regulator consists of a 1.0 V dropout composite PNP/NPN pass transistor, current limiting, and thermal limiting. This LDO is packaged in the SOIC-8 and DPAK-3 surface mount power packages. Applications include active SCSI-2 terminators and post regulation of switching power supplies.

Features
  • 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 Power Packages
  • Pb-Free Packages are Available
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
800 mA, 2.85 V, SCSI-2 Active Terminator, Low Dropout Voltage RegulatorMC34268/D (148.0kB)6
Package Drawings (1)
Document TitleDocument ID/SizeRevision
SOIC-8 Narrow Body751-07 (62.6kB)AK
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
MC34268DGActivePb-free Halide freeSOIC-8751-071Tube98$0.56
MC34268DR2GActivePb-free Halide freeSOIC-8751-071Tape and Reel2500$0.56
Specifications
ProductOutputPolarityVO (V)IO Typ (A)VI Max (V)VDO Typ (V)Iq Typ (mA)PSRR (dB)Noise (µVrms)
MC34268DGSinglePositive2.850.8151.1
MC34268DR2GSinglePositive2.850.8151.1
800 mA, 2.85 V, SCSI-2 Active Terminator, Low Dropout Voltage Regulator (148.0kB) MC34268
SOIC-8 Narrow Body CM1216