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MC34268DR2 Folha de dados(PDF) 1 Page - ON Semiconductor |
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MC34268DR2 Folha de dados(HTML) 1 Page - ON Semiconductor |
1 / 8 page © Semiconductor Components Industries, LLC, 2000 April, 2000 – Rev. 1 1 Publication Order Number: MC34268/D MC34268 SCSI-2 Active Terminator 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 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 and SOT–223 surface mount power packages. Applications include active SCSI–2 terminators and post regulation of switching power supplies. • 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, SOT–223 and SOP–8 Surface Mount Power Packages Simplified Block Diagram Input Thermal Limiting Control Circuit Current Limit Output Ground http://onsemi.com See detailed ordering and shipping information in the package dimensions section on page 3 of this data sheet. ORDERING INFORMATION 8 1 8 7 6 5 1 2 3 4 Gnd SOP–8 D SUFFIX CASE 751 DPAK DT SUFFIX CASE 369A Input NC NC 12 3 (Top View) (Top View) 1 3 Output Output Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2. SOT–223 ST SUFFIX CASE 318E 1 3 Pin 1. Ground 2. Output 3. Input 4. Output 4 MARKING DIAGRAMS ALYW 34268 1 8 34268 ALYWW AYW 268ST A = Assembly Location L = Wafer Lot Y = Year W = Work Week |
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