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LT1964 Datasheet(PDF) 1 Page - Linear Technology |
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LT1964 Datasheet(HTML) 1 Page - Linear Technology |
1 / 20 page LT3015 1 3015f TYPICAL APPLICATION FEATURES DESCRIPTION 1.5A, Low Noise, Negative Linear Regulator with Precision Current Limit The LT®3015 is a low noise, low dropout, negative linear regulator with fast transient response. The device supplies up to 1.5A of output current at a typical dropout voltage of 310mV. Operating quiescent current is typically 1.1mA and drops to < 1μA in shutdown. Quiescent current is also well controlled in dropout. In addition to fast transient response, the LT3015 exhibits very low output noise, making it ideal for noise sensitive applications. The LT3015 regulator is stable with a minimum 10μF output capacitor. Moreover, the regulator can use small ceramic capacitors without the necessary addition of ESR as is common with other regulators. Internal protection circuitry includes reverse output protection, precision current limit with foldback and thermal limit with hysteresis. The LT3015 is available as an adjustable device with a –1.22V reference voltage. Packages include the 5-lead TO-220 and DD-Pak, a thermally enhanced 12-lead MSOP and the low profile (0.75 mm) 8-lead 3mm × 3mm DFN. –5V, –1.5A, Low-Noise Regulator APPLICATIONS n Output Current: 1.5A n Dropout Voltage: 310mV n Precision Current Limit with Foldback n Low Output Noise: 60μVRMS (10Hz to 100kHz) n Low Quiescent Current: 1.1mA n Precision Positive or Negative Shutdown Logic n Fast Transient Response n Wide Input Voltage Range: –1.8V to –30V n Adjustable Output Voltage Range: –1.22V to –29.5V n Controlled Quiescent Current in Dropout n < 1μA Quiescent Current in Shutdown n Stable with 10μF Output Capacitor n Stable with Ceramic, Tantalum or Aluminum Capacitors n Thermal Limit with Hysteresis n Reverse Output Protection n 5-Lead TO-220 and DD-Pak, Thermally Enhanced 12-Lead MSOP and 8-Lead 3mm × 3mm × 0.75mm DFN Packages n Post-Regulator for Switching Supplies n Negative Logic Supplies n Low Noise Instrumentation n Industrial Supplies n Negative Complement to the LT1963A L, LT, LTC, LTM, ThinSOT, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. GND ADJ OUT SHDN IN LT3015 10μF 10μF 3.40k 1% 10.5k 1% VOUT –5V –1.5A VIN –5.5V TO –30V 3015 TA01 Dropout Voltage LOAD CURRENT (A) 0 0 400 350 300 250 200 150 100 50 450 –0.8 –1.0 –1.2 –1.4 –1.6 –0.2 –0.4 3015 TA01a –0.6 TJ = 25°C DD-PAK/TO-220 DFN/MSOP |
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