REG113中文资料具有使能功能的 400mA、10V、低压降稳压器数据手册TI规格书

描述 Description

The REG113 is a family of low-noise, low-dropout linear regulators with low ground pin current. Its new DMOS topology provides significant improvement over previous designs, including low-dropout voltage (only 250mV typ at full load), and better transient performance. In addition, no output capacitor is required for stability, unlike conventional low-dropout regulators that are difficult to compensate and require expensive low ESR capacitors greater than 1µF.

Typical ground pin current is only 850µA (at IOUT = 400mA) and drops to 10nA when not enabled. Unlike regulators with PNP pass devices, quiescent current remains relatively constant over load variations and under dropout conditions.

The REG113 has very low output noise (typically 28µVrms for VOUT = 3.3V with CNR = 0.01µF), making it ideal for use in portable communications equipment. Accuracy is maintained over temperature, line, and load variations. Key parameters are tested over the specified temperature range (–40°C to +85°C).

The REG113 is well protected—internal circuitry provides a current limit which protects the load from damage; futhermore, thermal protection circuitry keeps the chip from being damaged by excessive temperature. The REG113 is available in the SOT23-5 and MSOP-8 packages.

特性 Features

• CAP-FREE DMOS TOPOLOGY:
• Ultra Low Dropout Voltage:    250mV typ at 400mA    Output capacitor not required for stability

• UP TO 500mA PEAK, TYPICAL
• FAST TRANSIENT RESPONSE
• VERY LOW NOISE: 28 µVrms
• HIGH ACCURACY: ±1.5% max
• HIGH EFFICIENCY:   IGND = 850 µA at IOUT = 400mA Not Enabled: IGND = 0.01 µA
• 2.5V, 2.85V, 3.0V, 3.3V, AND 5.0V OUTPUT VERSIONS
• OTHER OUTPUT VOLTAGES AVAILABLE UPON REQUEST
• FOLDBACK CURRENT LIMIT
• THERMAL PROTECTION
• SMALL SURFACE-MOUNT PACKAGES:
SOT23-5 and MSOP-8
• APPLICATIONS
• PORTABLE COMMUNICATION DEVICES
• BATTERY-POWERED EQUIPMENT
• PERSONAL DIGITAL ASSISTANTS
• MODEMS
• BAR-CODE SCANNERS
• BACKUP POWER SUPPLIES

简介

REG113属于集成电路（IC）的线性+开关稳压器。由TI制造生产的REG113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。