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LT1963AET-2.5PBF Datasheet(PDF) 1 Page - Linear Technology |
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LT1963AET-2.5PBF Datasheet(HTML) 1 Page - Linear Technology |
1 / 28 page LT1963A Series 1 1963afd TYPICAL APPLICATION DESCRIPTION 1.5A, Low Noise, Fast Transient Response LDO Regulators FEATURES APPLICATIONS n Optimized for Fast Transient Response n Output Current: 1.5A n Dropout Voltage: 340mV n Low Noise: 40μVRMS (10Hz to 100kHz) n 1mA Quiescent Current n No Protection Diodes Needed n Controlled Quiescent Current in Dropout n Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V n Adjustable Output from 1.21V to 20V n < 1μA Quiescent Current in Shutdown n Stable with 10μF Output Capacitor* n Stable with Ceramic Capacitors* n Reverse Battery Protection n No Reverse Current n Thermal Limiting n 5-Lead TO-220, DD, 3-Lead SOT-223 and 8-Lead SO Packages The LT®1963A series are low dropout regulators optimized for fast transient response. The devices are capable of supplying 1.5A of output current with a dropout voltage of 340mV. Operating quiescent current is 1mA, dropping to < 1μA in shutdown. Quiescent current is well controlled; it does not rise in dropout as it does with many other regula- tors. In addition to fast transient response, the LT1963A regulators have very low output noise which makes them ideal for sensitive RF supply applications. Output voltage range is from 1.21V to 20V. The LT1963A regulators are stable with output capacitors as low as 10μF. Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting and reverse current protection. The devices are available in fixed output voltages of 1.5V, 1.8V, 2.5V, 3.3V and as an adjustable device with a 1.21V reference voltage. The LT1963A regula- tors are available in 5-lead TO-220, DD, 3-lead SOT-223, 8-lead SO and 16-lead TSSOP packages. 3.3V to 2.5V Regulator n 3.3V to 2.5V Logic Power Supplies n Post Regulator for Switching Supplies IN SHDN 10μF* *TANTALUM, CERAMIC OR ALUMINUM ELECTROLYTIC 1963A TA01 OUT VIN > 3V SENSE GND LT1963A-2.5 2.5V 1.5A 10μF* + + OUTPUT CURRENT (A) 0 200 300 1.6 1963A TA02 100 0 0.4 0.8 1.2 0.2 0.6 1.0 1.4 400 150 250 50 350 Dropout Voltage , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6118263, 6144250. *See Applications Information Section. |
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