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LT1965IDD-2.5-PBF Datasheet(PDF) 1 Page - Linear Technology |
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LT1965IDD-2.5-PBF Datasheet(HTML) 1 Page - Linear Technology |
1 / 20 page LT1965 Series 1 1965fa FEATURES APPLICATIONS DESCRIPTION 1.1A, Low Noise, Low Dropout Linear Regulator The LT®1965 series are low noise, low dropout linear regu- lators. The devices supply 1.1A of output current with a 310mV typical dropout voltage. Operating quiescent current 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. Output voltage ranges from 1.20V to 19.5V. The LT1965 regulators are stable with output capacitors as low as 10μF. Internal protection circuitry includes reverse battery protection, current limiting with foldback, thermal limiting and reverse current protection. The LT1965 series are available in fixed output voltages of 1.5V, 1.8V, 2.5V, 3.3V, and as an adjustable device with a 1.20V reference voltage. The package offerings include the 5-lead TO-220, 5-lead DD-PAK as well as the thermally enhanced 8-lead MSOP and low-profile (0.75mm) 8-lead 3mm × 3mm DFN. 3.3V to 2.5V Regulator n Output Current: 1.1A n Dropout Voltage: 310mV n Low Noise: 40μVRMS (10Hz to 100kHz) n 500μA Quiescent Current (Adjustable Version) n Wide Input Voltage Range: 1.8V to 20V n No Protection Diodes Needed n Controlled Quiescent Current in Dropout n Adjustable Output from 1.20V to 19.5V n Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V n < 1μA Quiescent Current in Shutdown n Stable with 10μF Output Capacitor n Stable with Ceramic, Tantalum or Aluminum Electrolytic Capacitors n Reverse Battery Protection n No Reverse Current n Current Limit with Foldback Protection n Thermal Limiting n 5-Lead TO-220, DD-PAK, Thermally Enhanced 8-Lead MSOP and 8-Lead 3mm × 3mm DFN Packages n Logic Power Supplies n Post Regulator for Switching Supplies n Low Noise Instrumentation Dropout Voltage TYPICAL APPLICATION L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. OUTPUT CURRENT (A) 0 0 100 200 300 0.2 0.4 0.6 0.8 1 400 50 150 250 350 1.2 1965 TA01b TJ = 25°C IN SHDN 10μF* *CERAMIC, TANTALUM OR ALUMINUM ELECTROLYTIC 1965 TA01 OUT VIN > 3V TO 20V SENSE GND LT1965-2.5 2.5V 1.1A 10μF* + + |
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