LP3985 PDF Datasheet
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Description
This is Micropower/ 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator. LP3985 Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator
June 2003
LP3985 Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator
General Description
The LP3985 is designed for portable and wireless applications with demanding performance and space requirements. The LP3985 is stable with a small 1 F ± 30% ceramic or high-quality tantalum output capacitor. The micro SMD requires the smallest possible PC board area - the total application circuit area can be less than 2.0mm x 2.5mm, a fraction of a 1206 case size. The LP3985’s 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. An optional external bypass capacitor reduces the output noise without slowing down the load transient response. Fast start-up time is achieved by utilizing an internal power-on circuit that actively.