DESCRIPTION

The LT®1965 series are low noise, low dropout linear regulators. The devices supply 1.1A of output current with a 310mVtypicaldropoutvoltage.Operatingquiescentcurrent is 500µA for the adjustable version, reducing to

FEATURES

■ Output Current: 1.1A

■ Dropout Voltage: 310mV

■ Low Noise: 40µVRMS (10Hz to 100kHz)

■ 500µA Quiescent Current (Adjustable Version)

■ Wide Input Voltage Range: 1.8V to 20V

■ No Protection Diodes Needed

■ Controlled Quiescent Current in Dropout

■ Adjustable Output from 1.20V to 19.5V

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

■ < 1µA Quiescent Current in Shutdown

■ Stable with 10µF Output Capacitor

■ Stable with Ceramic or Tantalum Capacitors

■ Reverse-Battery Protection

■ No Reverse Current

■ Current Limit with Foldback Protection

■ Thermal Limiting

■ 5-Lead TO-220, DD-Pak, Thermally Enhanced 8-Lead

MSOP and 8-Lead 3mm × 3mm DFN Packages

APPLICATIONS

■ Logic Power Supplies

■ Post Regulator for Switching Supplies

■ Low Noise Instrumentation