MAX8890ETCDDD+ [Maxim]

The MAX8890 is an RF power-management IC for a cellular phone, containing three low-noise, low quiescent current, low-dropout linear regulators for powering the transmitter, receiver, synthesizer, TCXO, and VCOs. Each LDO supplies up to 100mA with preset output voltages from 1.8V to 3.3V in 50mV increments. The input voltage range of 2.5V to 5.5V is suitable for single-cell Li+ or 3-cell NiMH batteries. Features include low 50mV dropout voltage at 100mA, ±1% output voltage accuracy, low 45µVRMS output voltage noise, low 180µA operating supply current, 67dB PSRR, short-circuit and thermal-overload protection, and a tiny 12-pin 4mm x 4mm QFN package.