NCP1117 Voltage Regulator: Pinout, Equivalent and Datasheet

Pinout

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3D Model

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 nine fixed output voltages of 1.5 V, 1.8 V, 1.9 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. The NCP1117 features a significant reduction in dropout voltage along with enhanced output voltage accuracy and temperature stability when compared to older industry standard three−terminal adjustable regulators.

This article provides you with a basic overview of the NCP1117 voltage regulator, including its pin descriptions, features and specifications, etc., to help you quickly understand what NCP1117 is.

• 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, 1.9 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 Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable

• These are Pb-Free Devices

Internal Schematic

• 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

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