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AAT3237IJS-2.3-T1 Datasheet(PDF) 8 Page - Advanced Analogic Technologies |
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AAT3237IJS-2.3-T1 Datasheet(HTML) 8 Page - Advanced Analogic Technologies |
8 / 13 page AAT3237 300mA MicroPower™ LDO with PowerOK 8 3237.2006.01.1.4 Functional Description The AAT3237 is intended for LDO regulator appli- cations where output current load requirements range from no load to 300mA. The advanced circuit design of the AAT3237 pro- vides excellent transient response and fast turn-on ability. The LDO regulator output has been specif- ically optimized to function with low-cost, low-ESR ceramic capacitors. However, the design will allow for operation over a wide range of capacitor types. The AAT3237 has an integrated Power-OK com- parator which indicates when the output is out of regulation. The device enable circuit is provided to shut down the LDO regulator for power conservation in portable products. The enable circuit has an additional out- put capacitor discharge circuit to assure sharp appli- cation circuit turn-off upon device shutdown. This LDO regulator has complete short-circuit and thermal protection. The integral combination of these two internal protection circuits gives the AAT3237 a comprehensive safety system during extreme adverse operating conditions. Device power dissipation is limited to the package type and thermal dissipation properties. Refer to the Thermal Considerations section of this datasheet for details on device operation at maximum output current loads. Functional Block Diagram Over-Current Protection Voltage Reference 94% Error Amplifier Over-Temperature Protection IN POK EN GND OUT |
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