300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator
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LP3985
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概述
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.
应用
◆Portable Media Players/MP3 players ◆Cellular and Smart mobile phone ◆LCD ◆DSC Sensor ◆Wireless Card
数据参数
数据参数
输出电流(mA)
300
输出电压(V)
1.2/1.5/1.8/2.5/2.8/3.0/3.3/3.6
输入电压(V)
2.5-5.5
电源抑制比(dB)
-68
精度(%)
2
导通压差(mV/mA)
300 @ 300
静态电流(uA)
50
特点
High PSRR
封装
SOT23/SOT89
特征
特征
◆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
