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AAT3239ITS-1.5-T1 Datasheet(PDF) 1 Page - Advanced Analogic Technologies |
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AAT3239ITS-1.5-T1 Datasheet(HTML) 1 Page - Advanced Analogic Technologies |
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1 / 14 page  AAT3239 500mA MicroPower™ LDO 3239.2006.03.1.2 1 General Description The AAT3239 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 AAT3239 has been specifically designed for high-speed turn-on and turn-off performance, fast transient response, good power supply rejection ratio (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 which is typically less than 400mV at 300mA. The device is output short-circuit protected and has a thermal shutdown circuit for additional protection under extreme operat- ing conditions. The AAT3239 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 AAT3239's reference output to ground. The AAT3239 is available in a Pb-free, 8-pin TSOPJW package in factory-programmed voltages. Features • 500mA Output Current • Low Dropout: 400mV at 300mA • High Accuracy: ±2.0% • 70µA Quiescent Current • Fast Line and Load Transient Response • High-Speed Device Turn-On and Shutdown • High Power Supply Rejection Ratio • 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 • TSOPJW 8-Pin Package Applications • Cellular Phones • Digital Cameras • Notebook Computers • Personal Portable Electronics • Portable Communication Devices Typical Application AAT3239 EN IN OUT BYP GND ON/OFF 1µF 10nF 2.2µF VIN GND GND VOUT PowerLinear™ |
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