NCP630中文资料Linear Voltage Regulator, Fast, 3.0 A数据手册ONSEMI规格书

描述 Description

The NCP630 is a low dropout (LDO) positive linear voltage regulator that is capable of providing a guaranteed output current of 3.0 A with a maximum dropout voltage of 1.25 V at 3.0 A over temperature. The fast turn on time allows step changes in loads commonly found in low voltage microprocessor applications. The NCP630 is currently offered as an adjustable output version that can be programmed down to 1.2 V with two external resistors and as a fixed output version at 3.47 V. On chip trimming adjusts the reference/output voltage within ? 1.5% accuracy. Internal protection features consist of output current limiting and thermal shutdown. NCP630 is available in D2PAK package.

特性 Features

• Output Current of 3.0 A
• 1.25 V Maximum Dropout Voltage at 3.0 A Over Temperature
• Voltage on Shutdown Pin is TTL Compatible
• Reference/Output Voltage Trimmed to +/-1.5
• Current Limit Protection
• Thermal Shutdown Protection
• -40°C to 125°C Junction Temperature Range
• Pb-Free Packages are Available

应用 Application

• Microprocessor Power Supplies
• DSP Power Supplies
• SMPS Post Regulation
• Battery Chargers

简介

NCP630属于集成电路（IC）的线性+开关稳压器。由制造生产的NCP630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。