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发布者:来自网络 发布时间:2019-1-15 阅读:244次    关键字: LDO
EUP7905-600mA高PSRR低漏失线性调整器


EUP7905-600mA高PSRR低漏失线性调整器 DataSheet 

概述
EUP7905是一款瞬态回应快、高PSRR、大负载电流的低漏失线性调整器。它具有输出精度高,漏失电压很小,低静态电流和快速启动的特点
EUP7905可以在低ESR的陶瓷电容下工作,从而节约了实际应用中PCB板的面积。EUP7905在全负载工作下仅需要2.2uF的陶瓷电容就可以保证稳定性。
当EUP7905检测到故障信号,例如过温关断信号时,芯片会关断功率管并将VOUT通过内部电阻放电止地。
EUP7905为内部固定输出电压,内部输出电压的范围从0.8V到3.6V。其它的关键特性还包括过流保护,过温关断。EUP7905可应用于SOT23-5的封装。

特点
•2.5V到5.5V的输入电压范围
•300mV@600mA的漏失电压
•超快速的瞬态响应
•2.2µF的陶瓷输出电容
•PSRR在1kHz时为70dB
•120µA的静态电流
•关断电流小于1µA
•输出电流限制
高精度的输出电压:2%的内部精度
固定输出电压的范围:0.8V~3.6V
•热关断
•关断时可对输出电容自动放电
•符合RoHS标准,并且100%无铅和无卤素

应用
•无线网络模块
•电池供电装置
•笔记本计算机

EUP7905-600mA High PSRR Low Dropout Linear Regulator 

Description
The EUP7905 is a high current, low dropout linear regulator with fast transient response and high PSRR. It offers high output accuracy, extremely low dropout voltage, low quiescent current and fast start-up time.
The EUP7905 is designed to work with low-ESR ceramic capacitor, reducing the amount of the PCB area necessary for power applications. Only a 2.2μF ceramic capacitor can make the device stable over the whole load range.
When EUP7905 detects fault signal, such as over-temperature, it will turn off the pass transistor and discharge VOUT to GND from the internal resistor.
EUP7905 only can be operated in fixed mode, the pre-set valve is from 0.8V~3.6V. Other key features include over-current protection, thermal shutdown. The device can be available in the SOT23-5 package.

Feature
•2.5V to 5.5V Input Voltage Range
•300mV@600mA Dropout Voltage
•Ultra Fast Transient Response
•Stable with 2.2μF Ceramic Output Capacitor
•70dB PSRR at 1kHz
•Low 120μA Quiescent Current
•Low Shutdown Current:<1μA
•Output Current Limit
•Output Voltage With High Accuracy:
2% Initial Accuracy
Fixed Output Voltage: 0.8V ~ 3.6V
•Thermal Shutdown
•COUT Auto-Discharge when Shutdown
•RoHS Compliant and 100% Lead (Fb)-Free Halogen-Free

Application
•WiFi Modules
•Battery-Powered Equipment
•Notebook Computers

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