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AAT3221IGV-28-2T1 Datasheet(PDF) 8 Page - Advanced Analogic Technologies |
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AAT3221IGV-28-2T1 Datasheet(HTML) 8 Page - Advanced Analogic Technologies |
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8 / 16 page  AAT3221/2 150mA NanoPower™ LDO Linear Regulator 8 3221.2002.03.0.94 Functional Block Diagram Over-Current Protection Over-Temp Protection VREF IN EN OUT GND Functional Description The AAT3221 and AAT3222 are intended for LDO regulator applications where output current load requirements range from No Load to 150mA. The advanced circuit design of the AAT3221/2 has been optimized for very low quiescent or ground current consumption making it ideal for use in power man- agement systems for small battery operated devices. The typical quiescent current level is just 1.1µA. The AAT3221/2 also contains an enable cir- cuit, which has been provided to shutdown the LDO regulator for additional power conservation in portable products. In the shutdown state the LDO draws less than 1µA from input supply. The LDO also demonstrates excellent power sup- ply ripple rejection (PSRR), and load and line tran- sient response characteristics. The AAT3221/2 is a truly high performance LDO regulator especially well suited for circuit applications which are sensi- tive to load circuit power consumption and extend- ed battery life. The LDO regulator output has been specifically optimized to function with low cost, low ESR ceramic capacitors. However, the design will allow for operation with a wide range of capacitor types. The AAT3221/2 has complete short circuit and thermal protection. The integral combination of these two internal protection circuits give the AAT3221/2 a comprehensive safety system to guard against extreme adverse operating condi- tions. Device power dissipation is limited to the package type and thermal dissipation properties. Refer to the thermal considerations section for details on device operation at maximum output load levels. |
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Similar Description - AAT3221IGV-28-2T1 |
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