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LT1764EQ-33#PBF

製品説明
仕様・特性

LT1764 Series 3A, Fast Transient Response, Low Noise, LDO Regulators U FEATURES DESCRIPTIO ■ The LT ®1764 is a low dropout regulator optimized for fast transient response. The device is capable of supplying 3A 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 regulators. In addition to fast transient response, the LT1764 has very low output voltage noise which makes the device ideal for sensitive RF supply applications. Output voltage range is from 1.21V to 20V. The LT1764 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 device is 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 LT1764 regulators are available in 5-lead TO-220, DD and Exposed Pad 16-lead TSSOP packages. ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Optimized for Fast Transient Response Output Current: 3A Dropout Voltage: 340mV at 3A Low Noise: 40µVRMS (10Hz to 100kHz) 1mA Quiescent Current Wide Input Voltage Range: 2.7V to 20V 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 < 1µA Quiescent Current in Shutdown Stable with 10µF Output Capacitor Reverse Battery Protection No Reverse Current Thermal Limiting Available in 5-Lead TO-220, DD and 16-Lead TSSOP Packages U APPLICATIO S ■ , 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 6144250, 6118263. 3.3V to 2.5V Logic Power Supply Post Regulator for Switching Supplies U ■ TYPICAL APPLICATIO Dropout Voltage 400 3.3VIN to 2.5VOUT Regulator VIN > 3V OUT 2.5V 3A + 10µF 10µF LT1764-2.5 SHDN SENSE GND DROPOUT VOLTAGE (mV) IN + 350 300 250 200 150 100 1764 TA01 50 0 0 0.5 1.0 1.5 2.0 LOAD CURRENT (A) 2.5 3.0 1764 TA02 1764fb 1

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LINEARTECHNOLOGY

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