LP3985数据手册集成电路（IC）的线性+开关稳压器规格书PDF

描述 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 SOT23-3 and SOT89-3 packages.

特性 Features

· Ultra-Low-Noise for RF Application
· 2.5V- 5.5V Input Voltage Range
· Low Dropout : 300mV @ 300mA
· 300mA Output Current
· High PSSR:-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

应用 Application

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