LTC1844ES5-BYP

150mA, Micropower, Low Noise, VLDO Linear Regulator

DESCRIPTION

The LTC®1844 Series are low noise VLDO™ very low dropout linear regulators designed for low power/portable applications. These regulators can operate from input voltages as low as 1.6V. Typical output noise is only 30µVRMSand typical dropout for the LTC1844-3.3 is just 90mV at the maximum load current of 150mA, reducing to 30mV at 50mA.

FEATURES

■ Very Low Dropout:

  90mV at 150mA

  30mV at 50mA LTC1844-3.3

■ Wide Input Voltage Range: 1.6V to 6.5V

■ Low 35µA Supply Current, Even in Dropout

■ Low Noise: 30µVRMS10Hz to 100kHz

■ ±1.75% Voltage Accuracy Over Temperature, Voltage and Current Ranges

■ Fast Transient Response

■ 10nA Supply Current in Shutdown

■ Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 2.8V, 3.3V

■ Adjustable Output Voltage: 1.25V to 6V

■ Output Current Limit

■ Reverse-Battery and Reverse-Current Protection

■ No Protection Diodes Needed

■ Stable with 1µF Output Capacitor

■ Stable with Ceramic Capacitors

■ Short-Circuit and Thermal Overload Protection

■ Low Profile 1mm SOT-23 Package