NCP1117中文资料1.0 A Positive LDO Linear Voltage Regulator (Fixed and Adjustable)数据手册ONSEMI规格书

描述 Description

The NCP1117 series are low dropout (LDO) positive linear 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 SOT223 and DPAK packages.

特性 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
• Pb-Free Packages are Available

应用 Application

• 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
• Automotive

简介

NCP1117属于集成电路（IC）的线性+开关稳压器。由制造生产的NCP1117稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。