LP3983H数据手册LPSemi中文资料规格书

描述 Description

The LP3983H is designed for portable RF and wireless applications with demanding performance and space requirements. The LP3983H performance 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 LP3983H also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The LP3983H 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. It is available in the 5-lead of SOT23-5 packages.

特性 Features

·Ultra-Low-Noise for RF Application
·2V- 6V Input Voltage Range
·Low Dropout : 300mV @ 400mA
·600mA Output Current, 750mA Peak Current
·High PSRR: -68dB at 1KHz
·< 0.01uA Standby Current When Shutdown
·Available in SOT23-5/6 Package
·TTL-Logic-Controlled Shutdown Input
·Ultra-Fast Response in Line/Load transient
·Current Limiting and Thermal Shutdown Protection
·Quick start-up (typically 20uS)

应用 Application

·Portable Media Players/MP3 players
·Cellular and Smart mobile phone
·LCD
·DSC Sensor
·Wireless Card