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UC2836 Datasheet(PDF) 1 Page - Texas Instruments |
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UC2836 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 10 page FEATURES • Complete Control for a High Current, Low Dropout, Linear Regulator • Fixed 5V or Adjustable Output Voltage • Accurate 2.5A Current Limiting with Foldback • Internal Current Sense Resistor • Remote Sense for Improved Load Regulation • External Shutdown • Under-Voltage Lockout and Reverse Voltage Protection • Thermal Shutdown Protection • 8 Pin Mini-Dip Package (Surface Mount also Available) DESCRIPTION The UC1835/6 families of linear controllers are optimized for the de- sign of low cost, low dropout, linear regulators. Using an external pass element, dropout voltages of less than 0.5V are readily obtained. These devices contain a high gain error amplifier, a 250mA output driver, and a precision reference. In addition, current sense with fold- back provides for a 2.5A peak output current dropping to less than 0.5A at short circuit. These devices are available in fixed, 5V, (UC1835), or adjustable, (UC1836), versions. In the fixed 5 volt version, the only external parts required are an external pass element, an output capacitor, and a com- pensation capacitor. On the adjustable version the output voltage can be set anywhere from 2.5V to 35V with two external resistors. Additional features of these devices include under-voltage lockout for predictable start-up, thermal shutdown and short circuit current limiting to protect the driver device. On the fixed voltage version, a reverse voltage comparator minimizes reverse load current in the event of a negative input to output differential. High Efficiency Regulator Controller BLOCK DIAGRAM Note: Pin numbers refer to 8-Pin DIL Package UC1835 UC1836 UC2835 UC2836 UC3835 UC3836 8/94 |
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