LP3981 Datasheet (Texas Instruments) - 300-mA Ultra-Low-Dropout CMOS Voltage Regulator

LP3981, 300-mA Ultra-Low-Dropout CMOS Voltage Regulator

Performance of the LP3981 device 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.

Power supply rejection is better than 60 d

LP3981 Features

* 1 2.5-V to 6-V Input Range

* 300-mA Output Current

* 60-dB PSRR at 1 kHz

* ≤ 1-μA Quiescent Current When Shut Down

* Fast Turnon Time: 120 μs (typical) with CBYPASS = 0.01 µF

* 132-mV Typical Dropout with 300-mA Load

* 35-μVrms Output Noise Ov