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发布者:来自网络 发布时间:2014-4-24 阅读:2771次    关键字: LDO
EUP7907-600mA,高PSRR,低压降线性稳压器


EUP7907-600mA,高PSRR,低压降线性稳压器 DataSheet 

概述

EUP7907为一款具有高PSRR、快速瞬态响应的大电流低压降线性稳压器,它还具有高精度、极低压降、低静态电流、启动快等特点。EUP7907可以在两种模式下工作。FB引脚连接到地时为固定模式,不需要额外的器件就能确定输出电压,输出电压等于默认值即0.8V~3.6V。FB引脚连接两个外接分压电阻时为可调模式,其可调输出为0.8V至5V。
EUP7907采用低ESR的陶瓷电容来减小PCB板的面积,这一点在电源应用中是必要的。仅需2.2uF的陶瓷电容保证了芯片在整个负载范围内都能够稳定工作。
EUP7907的输出电压有内部固定和外部可调两种工作模式。FB引脚连接至地,选择内部固定输出模式,输出电压的范围为0.8V~3.6V,该模式下输出端不需要额外的器件就可以确定输出电压;内部输出电压大于1.5V的EUP7907系列产品,具有输出电压外部可调的功能,可调输出电压的范围为0.8V~5V,该模式下,FB引脚需要接至两个外部电阻的分压点。EUP7907还具有过流保护和过温关断的功能,可以采用TDFN-8和SOT23-5两种封装。

特点



  • 2.5V至5.5V输入电压范围


  • 优异的瞬态响应

  • 2.2uF陶瓷输出电容保证芯片稳定工作

  • 高PSRR:70dB@1kHz

  • 低至120µA的静态电流

  • 关断电流<1µA

  • 输出电流限制

  • 高精度输出电压
    2%的精确度
    固定输出电压0.8V~3.6V,步长为0.05V
    可调输出电压0.8V~5V

  • 过温保护

  • 关短时输出电容自动放电

  • 符合RoHS规范及Pb-Free

应用


  • 行动电话

  • 蓝牙便携式设备

  • 电池供电设备
  • 笔记本电脑

EUP7907-600mA High PSRR Low Dropout Linear Regulator 

Description
The EUP7907 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 EUP7907 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 EUP7907 detects fault signal, such as over-temperature, it will turn off the pass transistor and discharge VOUT to GND from the internal resistor.
The EUP7907 works at ADJ mode. When FB pin is connected to two external resistors divider, its output can be adjusted from 0.8V to 5V. 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
•Excellent 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
Adjustable Output Voltage: 0.8V to 5V
•Thermal Shutdown
•COUT Auto-Discharge when Shutdown
•RoHS Compliant and 100% Lead (Fb)-Free Halogen-Free

Application
•Cellular Phones
•Bluetooth portable radios and Accessories
•battery-Powered Equipment
•Laptop, Palmtops, Notebook Computer

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