产品详情

微源高PSRR芯片 LP3992-25B5F LDO稳压器

General description

The LP3992-15B5F is designed for portable RF and wireless applications with demanding performance and space requirements. The LP3992 performance is optimized for battery-powered systems to deliver ultra low noise and low quiescent current.

The LP3992 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices.

The LP3992 consumes less than 0.1μA 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 and TSOT23-5 packages.

Features

◆ Ultra-Low-Noise for RF Application

◆ 2.5V- 5.5V Input Voltage Range

◆ Low Dropout : 220mV @ 300mA

◆ 1.2V, 1.5V, 1.8V, 2.5V, 2.8V,3.0V,3.3V, 3.6V and 5V Fixed

◆ 300mA Output Current

◆ High PSRR:-76dB at 1KHz

◆ <1uA Standby Current When Shutdown

◆ Available in SOT23-5、SOT23 and TSOT23-5Package

◆ TTL-Logic-Controlled Shutdown Input

◆ Ultra-Fast Response in Line/Load transient

◆ Current Limiting and Thermal Shutdown Protection

◆ Quick start-up (typically 50uS)

Applications

◆ Portable Media Players/MP3 players

◆ Cellular and Smart mobile phone

◆ LCD

◆ DSC Sensor

◆ Wireless Card