DESCRIPTION
The LT®1965 is a low noise, low dropout linear regulator. The device supplies 1.1A of output current with a 290mV typical dropout voltage. Operating quiescent current is 500μA, reducing to <1μA in shutdown. Quiescent current is well controlled; it does not rise in dropout as with many other regulators. The LT1965 regulator has very low output noise which makes it ideal for sensitive RF and DSP supply applications.

FEATURES
■ Output Current: 1.1A
■ Dropout Voltage: 290mV
■ Low Noise: 40μVRMS (10Hz to 100kHz)
■ 500μA Quiescent Current
■ 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
■ < 1μA Quiescent Current in Shutdown
■ Stable with 10μF Output Capacitor
■ Stable with Ceramic, Tantalum or Aluminum
   Electrolytic 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