LT1962

LT1962 Series 300mA, Low Noise, Micropower LDO Regulators Features nn Low Noise: 20µVRMS (10Hz to 100kHz) nn Output Current: 300mA nn Low Quiescent Current: 30µA nn Wide Input Voltage Range: 1.8V to 20V nn Low Dropout Voltage: 270mV nn Very Low Shutdown Current: < 1µA nn No Protection Diodes Needed nn Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V nn Adjustable Output from 1.22V to 20V nn Stable with 3.3µF Output Capacitor nn Stable with Aluminum, Tantalum or Ceramic Capacitors nn Reverse Battery Protection nn No Reverse Current nn Overcurrent and Overtemperature Protected nn 8-Lead MSOP Package Applications nn Cellular Phones nn Battery-Powered Systems nn Noise-Sensitive Instrumentation Systems Description The LT®1962 series are micropower, low noise, low dropout regulators. The devices are capable of supplying 300mA of output current with a dropout voltage of 270mV. Designed for use in battery-powered systems, the low 30µA quiescent current makes them an ideal choice. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators. A key feature of the LT1962 regulators is low output noise. With the addition of an external 0.01µF bypass capacitor, output noise drops to 20µVRMS over a 10Hz to 100kHz bandwidth. The LT1962 regulators are stable with output capacitors as low as 3.3µF. Small ceramic capacitors can be used without the series resistance required by other regulators. Internal protection circuitry includes reverse bat...