LP3990H数据手册LPSemi中文资料规格书

描述 Description

The LP3990 is designed for portable RF and wireless applications with demanding performance and space requirements. The LP3990 performance is optimized for battery-powered systems to deliver ultra low noise and low quiescent current. The LP3990 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The LP3990 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 1mm×1mm X2SON packages.

特性 Features

·Ultra-thin Package
·2V- 5.5V Input Voltage Range
·Low Dropout : 130mV @ 200mA
·1.2V, 1.5V, 1.8V, 2.5V, 2.8V,3.0V,3.3V, 3.6Vand 5V Fixed
·300mA Output Current, 450mA Peak Current
·High PSSR:-75dB at 1KHz
·< 0.01uA Standby Current When Shutdown
·Available in 1mm×1mm X2SON Package
·TTL-Logic-Controlled Shutdown Input
·Ultra-Fast Response in Line/Load transient
·Current Limiting and Thermal Shutdown Protection
·Quick start-up (typically 50uS)

应用 Application

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