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LT3027 Datasheet(PDF) 1 Page - Linear Technology |
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LT3027 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 16 page  1 LT3027 3027f VOUT 100µV/DIV 20µVRMS 3027 TA01b APPLICATIO S DESCRIPTIO FEATURES TYPICAL APPLICATIO Dual 100mA, Low Dropout, Low Noise, Micropower Regulator with Independent Inputs ■ Low Noise: 20µVRMS (10Hz to 100kHz) ■ Low Quiescent Current: 25µA/Channel ■ Independent Inputs ■ Wide Input Voltage Range: 1.8V to 20V ■ Output Current: 100mA/Channel ■ Very Low Shutdown Current: <0.1 µA ■ Low Dropout Voltage: 300mV at 100mA ■ Adjustable Output from 1.22V to 20V ■ Stable with 1µF Output Capacitor ■ Stable with Aluminum, Tantalum or Ceramic Capacitors ■ Reverse Battery Protected ■ No Protection Diodes Needed ■ Overcurrent and Overtemperature Protected ■ Thermally Enhanced 10-Lead MSOP and DFN Packages The LT ®3027 is a dual, micropower, low noise, low drop- out regulator with independent inputs. With an external 0.01µF bypass capacitor, output noise is a low 20µVRMS over a 10Hz to 100kHz bandwidth. Designed for use in battery-powered systems, the low 25µA quiescent current per channel makes it an ideal choice. In shutdown, quies- cent current drops to less than 0.1µA. Shutdown control is independent for each channel, allowing for flexibility in power management. The device is capable of operating over an input voltage from 1.8V to 20V, and can supply 100mA of output current from each channel with a drop- out voltage of 300mV. Quiescent current is well controlled in dropout. The LT3027 regulator is 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 pro- tection, current limiting and thermal limiting protection. The device is available as an adjustable device with a 1.22V reference voltage. The LT3027 regulator is available in the thermally enhanced 10-lead MSOP and low profile (0.75mm) 3mm × 3mm DFN packages. 10Hz to 100kHz Output Noise 3.3V/2.5V Low Noise Regulators ■ Cellular Phones ■ Pagers ■ Battery-Powered Systems ■ Frequency Synthesizers ■ Wireless Modems , LTC and LT are registered trademarks of Linear Technology Corporation. IN1 0.01µF 0.01µF 10µF 3027 TA01 OUT1 VIN1 3.7V TO 20V BYP1 ADJ1 OUT2 BYP2 ADJ2 GND LT3027 3.3V AT 100mA 20µVRMS NOISE 2.5V AT 100mA 20µVRMS NOISE 1µF SHDN1 IN2 VIN2 2.9V TO 20V 1µF SHDN2 10µF 422k 249k 261k 249k Protected by U.S. Patents, including 6118263, 6144250. |
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