The AS1358/AS1359 are ultra-low-noise, low-dropout linear regulators specifically designed to deliver up to 150/300mA continuous output current, and can achieve a low 140mV dropout for 300mA load current. The LDOs are designed and optimized to work with low-cost, small-capacitance ceramic capacitors.
An integrated P-channel MOSFET pass transistor allows the devices to maintain extremely low quiescent current (40μA).
The AS1358/AS1359 uses an advanced architecture to achieve ultra-low output voltage noise of 9μVRMS and a power-supply rejection-ratio of better than 80dB (up to 10kHz) and 92dB @ 1kHz.
The AS1358/AS1359 requires only 1μF output capacitor for stability at any load. When the LDO is disabled, current consumption drops below 500nA.
The devices are available in a TSOT23 5-pin package.
The devices are ideal for mobile phones, wireless phones, PDAs, handheld computers, mobile phone base stations, Bluetooth portable radios and accessories, wireless LANs, digital cameras, personal audio devices, and any other portable, noise-sensitive battery-powered application.
AS1358 150mA Ultra-Low-Noise, High PSRR LDO Block Diagram
