【MIC5319】_LDO低压差线性稳压器_裕鼎祥科技

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【MIC5319】300mA,超低噪音,超高速CMOS LDO稳压器

MIC5319 详细介绍

相关商品： RT9193-18PB XC6221

RT9193 概述
RT9193 系列是具有高精度, 低噪音, 高速度, 兼容低ESR电容, 采用CMOS工艺生产的低压差LDO电压调整器,内部包括参考电压源电路,误差放大器电路,过流保护电路和相位补偿电路。RT9193 系列可通过在使能端端子输入低电平信号使芯片工作于待机状态。在该状态下,RT9193 系列可通过芯片内部电路实现输出端电容自动放电的功能,使得输出端电压VOUT迅速恢复到Vss。RT9193 系列的输出电压可在0.8 ~ 5.0V范围内,利用激光微调技术,可实现以0.05V为间隔自由选择。RT9193 系列内部的Fold Back电路可提供过流和短路保护。该系列还具有低功耗(TYP.25uA)和低压差的优点(80mV@100mA,VOUT(T)=3.0V),兼容低ESR的陶瓷电容。当选用超小型的USP-4封装时,可进一步减少在电路板上面所需要的面积尺寸。

RT9193 主要特性
• RT9193 最大输出电流：200mA 限流250mA TYP.
• RT9193 输入输出电压差：80mV @ 100mA at VOUT=3.0V
• RT9193 工作电压范围：1.6V~6.0V
• RT9193 输出电压范围：0.8V~5.0V (0.05V 间隔 )
• RT9193 低功耗：25uA (TYP.)
• RT9193 电源抑制比：70db @ 1kHz
• RT9193 功能：输出端电容CL快速自动放电功能(RT9193B)
• RT9193 封装：SC-70-5/SOT-23-5/TSOT-23-5

RT9193 General Description

RT9193 是专为满足便携式设备的射频和无线应用的苛刻性能与空间要求而设计。RT9193 在1mA的负载时DROPOUT电压仅为1mV，在150mA负载时　DROPOUT电压低于200mV。RT9193 还具有极低的静态电流（典型值＜100uA），当ENPIN＝Low时更可以使晶片的Standby电流低于1uA，延长电池的工作时间。外加Bypass电容可以极大的抑制杂讯，PSRR高达70dB（Typ）。RT9193具有过流保护、温度保护功能。输出电压共有　3.3V、2.8V、2.5V、1.8V、1.5V。封装形式：SOT-23-5
The RT9193 is designed for portable RF and wireless applications with demanding performance and space requirements. The RT9193 erformance is optimized for battery-powered systems to deliver ultra low noise and low quiescent current. A noise bypass pin is available for further reduction of output noise. Regulator ground current increases only slightly in dropout, further prolonging the battery life. The RT9193 lso works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The RT9193 consumes less than 0.01μA in shutdown mode and has fast turn-on time less than 50μs. The other features include ultra low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. Available in the SC-70-5, SOT-23-5, TSOT-23-5, WDFN-6L 2x2 and MSOP-8 packages.

RT9193 Ordering Info

Note :
Richtek Pb-free and Green products are :
► RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.
► Suitable for use in SnPb or Pb-free soldering processes.

RT9193 Features

•RF应用的超低噪音
•超快速瞬态响应
•快速启动（通常50μS）
•关机时的待机电流<0.01μA
•低压差：220mV @300毫安
•宽工作电压范围：2.5V至5.5V
•TTL逻辑控制关断输入
•低温度系数
•电流限制保护
•热关断保护
•只需要1μF的输出电容器
•高电源抑制比
•符合RoHS规范及Pb-Free

• Ultra Low Noise for RF Application
• Ultra Fast Response in Line/Load Transient
• Quick Start-Up (Typically 50μs)
• < 0.01μA Standby Current When Shutdown
• Low Dropout : 220mV @ 300mA
• Wide Operating Voltage Ranges : 2.5V to 5.5V
• TTL-Logic-Controlled Shutdown Input
• Low Temperature Coefficient
• Current Limiting Protection
• Thermal Shutdown Protection
• Only 1μF Output Capacitor Required for Stability
• High Power Supply Rejection Ratio
• Custom Voltage Available
• RoHS Compliant and 100% Lead (Pb)-Free

RT9193 Application

•CDMA / GSM蜂窝手机
•电池供电设备
•笔记本电脑，掌上电脑，笔记本电脑
•手持式仪表
•PCMCIA卡
•其他便携式设备

• CDMA/GSM Cellular Handsets
• Battery-Powered Equipment
• Laptop, Palmtops, Notebook Computers
• Hand-Held Instruments
• PCMCIA Cards
• Portable Information Appliances

RT9193 Pin Configurations

(RT9193 TOP VIEW)

WDFN-6L 2x2