深圳市科瑞芯电子有限公司

微源半导体 LP3985 SOT23/SOT89 300mA、超低噪声、小封装、超快CMOS LDO稳压器

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 LP3985consumes less than 1μA in shutdown mode. 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.

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 SOT23-5 Package

◆ TTL-Logic-Controlled Shutdown Input

◆ Ultra-Fast Response in Line/Load transient

◆ Current Limiting 

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