NCP1082DEG Контроллеры PoE (Power over Ethernet) от ON Semiconductor

Обзор продукта

Обзор

1.0 A Low-Dropout Positive Fixed and Adjustable Voltage Regulators The NCP1117 series are low dropout positive voltage regulators that are capable of providing an output current that is in excess of 1.0 A with a maximum dropout voltage of 1.2 V at 800 mA over temperature. This series contains eight fixed output voltages of 1.5 V, 1.8 V, 2.0 V, 2.5 V, 2.85 V, 3.3 V, 5.0 V, and 12 V that have no minimum load requirement to maintain regulation. Also included is an adjustable output version that can be programmed from 1.25 V to 18.8 V with two external resistors. On chip trimming adjusts the reference/output voltage to within ±1.0% accuracy. Internal protection features consist of output current limiting, safe operating area compensation, and thermal shutdown. The NCP1117 series can operate with up to 20 V input. Devices are available in SOT−223 and DPAK packages. Features • Output Current in Excess of 1.0 A • 1.2 V Maximum Dropout Voltage at 800 mA Over Temperature • Fixed Output Voltages of 1.5 V, 1.8 V, 2.0 V, 2.5 V, 2.85 V, 3.3 V, 5.0 V, and 12 V • Adjustable Output Voltage Option • No Minimum Load Requirement for Fixed Voltage Output Devices • Reference/Output Voltage Trimmed to ±1.0% • Current Limit, Safe Operating and Thermal Shutdown Protection • Operation to 20 V Input • NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes • Pb−Free Packages are AvailableApplications • Consumer and Industrial Equipment Point of Regulation • Active SCSI Termination for 2.85 V Version • Switching Power Supply Post Regulation • Hard Drive Controllers • Battery Chargers