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LT1763CDE Datasheet(PDF) 1 Page - Linear Technology |
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LT1763CDE Datasheet(HTML) 1 Page - Linear Technology |
1 / 20 page LT1763 Series 1 1763fe TYPICAL APPLICATION DESCRIPTION 500mA, Low Noise, LDO Micropower Regulators The LT®1763 series are micropower, low noise, low dropout regulators. The devices are capable of supplying 500mA of output current with a dropout voltage of 300mV. Designed for use in battery-powered systems, the low 30μA quiescent current makes them an ideal choice. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators. A key feature of the LT1763 regulators is low output noise. With the addition of an external 0.01μF bypass capacitor, output noise drops to 20μVRMS over a 10Hz to 100kHz bandwidth. The LT1763 regulators are stable with output capacitors as low as 3.3μF. Small ceramic capacitors can be used without the series resistance required by other regulators. Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting and reverse current protection. The parts come in fixed output voltages of 1.5V, 1.8V, 2.5V, 3V, 3.3V and 5V, and as an adjustable device with a 1.22V reference voltage. The LT1763 regulators are available in 8-lead SO and 12-lead, low profile (4mm × 3mm × 0.75mm) DFN packages. 3.3V Low Noise Regulator FEATURES APPLICATIONS n Low Noise: 20μVRMS (10Hz to 100kHz) n Output Current: 500mA n Low Quiescent Current: 30μA n Wide Input Voltage Range: 1.8V to 20V n Low Dropout Voltage: 300mV n Very Low Shutdown Current: < 1μA n No Protection Diodes Needed n Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V n Adjustable Output from 1.22V to 20V n Stable with 3.3μF Output Capacitor n Stable with Aluminum, Tantalum or Ceramic Capacitors n Reverse Battery Protection n No Reverse Current n Overcurrent and Overtemperature Protected n 8-Lead SO and 12-Lead (4mm × 3mm) DFN Packages n Cellular Phones n Battery-Powered Systems n Noise-Sensitive Instrumentation Systems , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6144250, 6118263. Dropout Voltage IN SHDN 0.01μF 10μF 1763 TA01 OUT SENSE VIN 3.7V TO 20V BYP GND LT1763-3.3 3.3V AT 500mA 20μVRMS NOISE 1μF + OUTPUT CURRENT (mA) 0 400 350 300 250 200 150 100 50 0 400 1763 TA02 100 200 300 500 |
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