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LT1761IS5-3-PBF Datasheet(PDF) 1 Page - Linear Technology |
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LT1761IS5-3-PBF Datasheet(HTML) 1 Page - Linear Technology |
1 / 22 page LT1761 Series 1 1761sff TYPICAL APPLICATION DESCRIPTION 100mA, Low Noise, LDO Micropower Regulators in TSOT-23 The LT ®1761 series are micropower, low noise, low dropout regulators. With an external 0.01μF bypass capacitor, output noise drops to 20μVRMS over a 10Hz to 100kHz bandwidth. Designed for use in battery-powered systems, the low 20μA quiescent current makes them an ideal choice. In shutdown, quiescent current drops to less than 0.1μA. The devices are capable of operating over an input voltage from 1.8V to 20V, and can supply 100mA of output current with a dropout voltage of 300mV. Quiescent current is well controlled, not rising in dropout as it does with many other regulators. The LT1761 regulators are stable with output capacitors as low as 1μF. 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 device is available in fixed output voltages of 1.2V, 1.5V, 1.8V, 2V, 2.5V, 2.8V, 3V, 3.3V and 5V, and as an adjustable device with a 1.22V reference voltage. The LT1761 regulators are available in the 5-lead TSOT-23 package. 5V Low Noise Regulator FEATURES APPLICATIONS n Low Noise: 20μVRMS (10Hz to 100kHz) n Low Quiescent Current: 20μA n Wide Input Voltage Range: 1.8V to 20V n Output Current: 100mA n Very Low Shutdown Current: <0.1μA n Low Dropout Voltage: 300mV at 100mA n Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2V, 2.5V, 2.8V, 3V, 3.3V, 5V n Adjustable Output from 1.22V to 20V n Stable with 1μF Output Capacitor n Stable with Aluminum, Tantalum or Ceramic Capacitors n Reverse-Battery Protected n No Reverse Current n No Protection Diodes Needed n Overcurrent and Overtemperature Protected n Available in Tiny 5-Lead TSOT-23 Package n Cellular Phones n Pagers n Battery-Powered Systems n Frequency Synthesizers n Wireless Modems 10Hz to 100kHz Output Noise IN SHDN 0.01μF 10μF 1761 TA01 OUT VIN 5.4V TO 20V BYP GND LT1761-5 5V AT100mA 20μVRMS NOISE 1μF + VOUT 100μV/DIV 20μVRMS 1761 TA01b L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. |
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