REG1117A中文资料具有 -40°C 至 +125°C 工作温度范围的 1A、15V 线性稳压器数据手册TI规格书

描述 Description

The REG1117 is a family of easy-to-use three-terminal voltage regulators. The family includes a variety of fixed-and adjustable-voltage versions, two currents (800mA and 1A) and two package types (SOT-223 and DDPAK). See the chart below for available options.

Output voltage of the adjustable versions is set with two external resistors. The REG1117 low dropout voltage allows its use with as little as 1V input-output voltage differential.

Laser trimming assures excellent output voltage accuracy without adjustment. An NPN output stage allows output stage drive to contribute to the load current for maximum efficiency.

特性 Features

• FIXED AND ADJUSTABLE VERSIONS
• 2.85V MODEL FOR SCSI-2 ACTIVE TERMINATION
• OUTPUT CURRENT:      REG1117: 800mA max      REG1117A: 1A max
• OUTPUT TOLERANCE: ±1% max
• DROPOUT VOLTAGE:      REG1117: 1.2V max at IO = 800mA      REG1117A: 1.3V max at IO = 1A
• INTERNAL CURRENT LIMIT
• THERMAL OVERLOAD PROTECTION
• SOT-223 AND DDPAK SURFACE-MOUNT PACKAGES
• APPLICATIONS
• SCSI-2 ACTIVE TERMINATION
• HAND-HELD DATA COLLECTION DEVICES
• HIGH EFFICIENCY LINEAR REGULATORS
• BATTERY POWERED INSTRUMENTATION
• BATTERY MANAGEMENT CIRCUITS FOR NOTEBOOK AND PALMTOP PCs
• CORE VOLTAGE SUPPLY: FPGA, PLD, DSP, CPU

简介

REG1117A属于集成电路（IC）的线性+开关稳压器。由TI制造生产的REG1117A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。