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AAT3238IGU-3.3-T1 Datasheet(PDF) 1 Page - Advanced Analogic Technologies |
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AAT3238IGU-3.3-T1 Datasheet(HTML) 1 Page - Advanced Analogic Technologies |
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1 / 14 page  AAT3238 300mA MicroPower™ High Performance LDO Linear Regulator 3238.2006.11.1.6 1 General Description The AAT3238 MicroPower low dropout (LDO) linear regulator is ideally suited for portable applications where very fast transient response, extended battery life, and small size are critical. The AAT3238 has been specifically designed for high-speed turn-on and turn-off performance, fast transient response, good power supply ripple rejection (PSRR), and is reasonably low noise, making it ideal for powering sensitive circuits with fast switching requirements. Other features include low quiescent current, typical- ly 70µA, and low dropout voltage, typically less than 400mV at the maximum output current level of 300mA. The device is output short-circuit protected and has a thermal shutdown circuit for additional pro- tection under extreme operating conditions. The AAT3238 also features a low-power shutdown mode for extended battery life. A reference bypass pin has been provided to improve PSRR perform- ance and output noise by connecting a small exter- nal capacitor from the AAT3238's reference output to ground. The AAT3238 is available in a Pb-free, space-saving 6-pin SOT23 or 8-pin SC70JW package in factory- programmed voltages. Features • Low Dropout: 400mV at 300mA • Guaranteed 300mA Output • High Accuracy: ±1.5% • 70µA Quiescent Current • Fast Line and Load Transient Response • High-Speed Device Turn-On and Shutdown • High Power Supply Ripple Rejection • Low Self Noise • Short-Circuit Protection • Over-Temperature Protection • Uses Low Equivalent Series Resistance (ESR) Ceramic Capacitors • Noise Reduction Bypass Capacitor • Shutdown Mode for Longer Battery Life • Low Temperature Coefficient • Factory-Programmed Output Voltages • SOT23 6-Pin or SC70JW 8-Pin Package Applications • Cellular Phones • Digital Cameras • Notebook Computers • Personal Portable Electronics • Portable Communication Devices Typical Application AAT3238 EN IN OUT BYP GND ON/OFF 1 μF 10nF 2.2 μF VIN GND GND VOUT PowerLinear™ |
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