LP3985ITL-2.8 Description
The LP3985 is designed for portable and wireless applications with demanding performance and space requirements. LP3985 performance is optimized for battery-powered systems to deliver ultra low noise extremely low dropout voltage and low quiescent current. Regulator ground current increases only slightly in dropout,further prolonging the battery life. The LP3985 is stable with a small1-uF+30% ceramic or highqualitytantalum output capacitor.The DSBGA requires the smallest possible PC board area - the total application circuit area can be less than2 mm x2.5 mm. a fraction ofa 1206 case size.
LP3985ITL-2.8 Features
Input Voltage: 2.5Vto6V
100-mVMaximum Dropout with 150-mA Load150-mA Verified Output
50-dBPSRRat1 kHzat VN=Vo+02V≤1.5-uA Quiescent Current when Shut Down Fast Turn-On time: 200 us (typ.)
30-uVRMs Output Noise(typical)over 10 Hz to 100 kHz
-40°℃ to 125°C Junction Temperature Range for Operation
2.5-V.2.6-V.2.7-V.28-V2.85-V2.9-V3-V.31- V.3.2-V.3.3-V4.7-V475-V4.8-Vand 5-V Outputs Standard
Logic Controlled Enable
Stable with Ceramic and High-Quality Tantalum Capacitors Fast Turnon
Thermal Shutdown and Short-Circuit Current Limit
LP3985ITL-2.8 Applications
CDMA Cellular Handsets
Wideband CDMA Cellular Handsets
GSM Cellular Handsets
Portable Information Appliances
