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TPS731 Datasheet(PDF) 11 Page - Texas Instruments |
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TPS731 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 30 page Servo Error Amp Ref 27 kW 8 kW Current Limit Thermal Protection Bandgap NR OUT R 1 R 2 EN GND IN R 1 + R2 = 80 kW 4-MHZ Charge Pump TPS731 www.ti.com SBVS034N – SEPTEMBER 2003 – REVISED DECEMBER 2015 7 Detailed Description 7.1 Overview The TPS731xx family of low-dropout linear regulators operates down to an input voltage of 1.7 V and supports output voltages down to 1.2 V while sourcing up to 150 mA of load current. This linear regulator uses an NMOS pass element with an integrated 4-MHz charge pump to provide a dropout voltage of less than 100 mV at full load current. This unique architecture also permits stable regulation over a wide range of output capacitors. In fact, the TPS731xx family of devices does not require any output capacitor for stability. The increased insensitivity to the output capacitor value and type makes this family of linear regulators an ideal choice when powering a load where the effective capacitance is unknown. The TPS731xx family of devices also features a noise reduction (NR) pin that allows for additional reduction of the output noise. With a noise reduction capacitor of 0.01 µF connected from the NR pin to GND, the TPS73115 output noise can be as low as 12.75 µVRMS. The low noise output featured by the TPS731xx family makes it well- suited for powering VCOs or any other noise sensitive load. 7.2 Functional Block Diagrams Figure 29. Fixed-Voltage Version Copyright © 2003–2015, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: TPS731 |
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