300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator
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LP3983S
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概述
The LP3983S is designed for portable RF and wireless applications with demanding performance and space requirements. The LP3983S performance is optimized for battery-powered systems to deliver ultra-low noise and low quiescent current. A noise bypass pin is available for further reduction of output noise. Regulator ground current increases only slightly in dropout, further prolonging the battery life. The LP3983S also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The LP3983S 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 SOT23-5 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)
Adj，FB=0.8
输入电压(V)
2.0-6.0
电源抑制比(dB)
-70
精度(%)
2
导通压差(mV/mA)
220 @ 300
静态电流(uA)
90
特点
Shutdown,High PSRR
封装
SOT23-5
特征
特征
◆Ultra-Low-Noise for RF Application ◆2V- 6V Input Voltage Range ◆Low Dropout : 210mV @ 300mA ◆300mA Output Current, 550mA Peak Current ◆High PSRR: -70dB at 217Hz ◆< 1uA Standby Current When Shutdown ◆Available in SOT23-5 Package ◆Current Limiting and Thermal Shutdown Protection
