產(chǎn)品詳情

LP3985-30B3F 微源低噪聲芯片 用于射頻應(yīng)用

General Description

The LP3985 is designed for portable RF and wireless applications with demanding performance and space requirements. The LP3985 performance is optimized for battery-powered systems to deliver ultra-low noise and low quiescent current.The LP3985 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. 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 SOT23-3and SOT89-3 packages.

Features

◆ Ultra-Low-Noise for RF Application

◆ 2.5V- 5.5V Input Voltage Range

◆ Low Dropout : 300mV @ 300mA

◆ 300mA Output Current

◆ High PSRR:-68dB at 1KHz

◆ 1uA Standby Current When Shutdown

◆ Available in SOT23-3/SOT89-3 Package

◆ TTL-Logic-Controlled Shutdown Input

◆ Ultra-Fast Response in Line/Load transient

◆ Current Limiting and Thermal Shutdown

◆ Protection

Applications

◆ Portable Media Players/MP3 players

◆ Cellular and Smart mobile phone

◆ LCD

◆ DSC Sensor

◆ Wireless Card