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LT1963AEQ-1.8 Datasheet(PDF) 1 Page - Linear Technology |
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LT1963AEQ-1.8 Datasheet(HTML) 1 Page - Linear Technology |
1 / 20 page 1 LT1963A Series 1963af TYPICAL APPLICATION APPLICATIO S FEATURES DESCRIPTIO 1.5A, Low Noise, Fast Transient Response LDO Regulators ■ Optimized for Fast Transient Response ■ Output Current: 1.5A ■ Dropout Voltage: 340mV ■ Low Noise: 40 mVRMS (10Hz to 100kHz) ■ 1mA Quiescent Current ■ No Protection Diodes Needed ■ Controlled Quiescent Current in Dropout ■ Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V ■ Adjustable Output from 1.21V to 20V ■ <1 mA Quiescent Current in Shutdown ■ Stable with 10 mF Output Capacitor ■ Stable with Ceramic Capacitors ■ Reverse Battery Protection ■ No Reverse Current ■ Thermal Limiting The LT ®1963A series are low dropout regulators opti- mized 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 < 1 mAinshutdown.Quiescentcurrentiswellcontrolled; it does not rise in dropout as it does with many other regulators. 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 10 mF. Small ceramic capacitors can be used without the necessary addition of ESR as is common with other regulators. 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 regulators are available in 5-lead TO-220, DD, 3-lead SOT-223 and 8-lead SO packages. 3.3V to 2.5V Regulator ■ 3.3V to 2.5V Logic Power Supplies ■ Post Regulator for Switching Supplies , LTC and LT are registered trademarks of Linear Technology Corporation. IN SHDN 10 µF* *TANTALUM, CERAMIC OR ALUMINUM ELECTROLYTIC 1963 TA01 OUT VIN > 3V SENSE GND LT1963A-2.5 2.5V 1.5A 10 µF* + + OUTPUT CURRENT (A) 0 200 300 1.6 1963 TA02 100 0 0.4 0.8 1.2 0.2 0.6 1.0 1.4 400 150 250 50 350 Dropout Voltage |
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