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AAT3520IGY-308-50-T1 Datasheet(PDF) 1 Page - Advanced Analogic Technologies |
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AAT3520IGY-308-50-T1 Datasheet(HTML) 1 Page - Advanced Analogic Technologies |
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1 / 8 page  AAT3520/2/4 MicroPower Microprocessor Reset Circuit Typical Application *AAT3524 Only AAT3520 AAT3522 AAT3524 uP V CC V CC V CC RESET (RESET) GND GND RESET INPUT 100k (nominal) * 3520.2002.2.0.9 1 General Description The AAT3520 Series of PowerManager™ products is a member of AATI's Total Power Management IC™ (TPMIC™) product family. These micro- processor reset circuits are ideal for monitoring volt- age supplies in portable systems, where extended battery life is critical. They provide a low cost, reli- able solution by eliminating external components. The AAT3520 series operates by monitoring the system power supply voltage. When the input volt- age drops below a fixed threshold, the device asserts a reset signal for a fixed time period after V CC has risen back above the fixed threshold; 30ms and 150ms minimum periods are available. The AAT3520 product series is guaranteed to operate down to 1.2V and designed to ignore fast line tran- sients appearing on V CC. The AAT3520 series is available with three output stage versions: AAT3520 push-pull active high output, AAT3522 push-pull active low output and AAT3524 open drain active low output. The quiescent supply current is extremely low, typically 1µA, making it ideal for portable battery operated equipment. The AAT3520/2/4 are available in a 3 pin SOT23 package and are specified over -40° to 85°C oper- ating temperature range. Features • 1.2V to 5.5V Input voltage range • Operation down to 1.2V • Extremely low quiescent current: less than 2µA • High accuracy detection threshold: ±1.5% • Monitor Power Supply Voltages • Fixed thresholds from 2.2V to 4.6V • Reset pulse width options • Minimum 30 ms or 150ms • Fast propagation delay <20µs • Available output configurations: • Open-drain output • CMOS active high output • CMOS active low output • Temp range -40 to 85°C • 3 pin SOT23 package Applications • Notebook Computers • Cell Phones • Portable Electronics • Embedded Systems • Intelligent Instruments PowerManager™ |
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