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 <1µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as with many other regulators. The LT1965 regulators have very low output noise which makes them ideal for sensitive RF and DSP supply applications.

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