概述
The LP3992 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 withlow-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.
◆ 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 TSOT23-5 Package
◆ TTL-Logic-Controlled Shutdown Input
◆ Ultra-Fast Response in Line/Load transient
◆ Current Limiting and Thermal Shutdown Protection
◆ Quick start-up (typically 50uS)
