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AAT3221

Advanced Analogic Technologies
Part Number AAT3221
Manufacturer Advanced Analogic Technologies
Description 150mA NanoPower LDO Linear Regulator
Published Mar 23, 2005
Detailed Description AAT3221/2 150mA NanoPower™ LDO Linear Regulator General Description The AAT3221 and AAT3222 PowerLinear™ NanoPower Low D...
Datasheet PDF File AAT3221 PDF File

AAT3221
AAT3221

Overview
AAT3221/2 150mA NanoPower™ LDO Linear Regulator General Description The AAT3221 and AAT3222 PowerLinear™ NanoPower Low Dropout Linear Regulators are ideal for portable applications where extended battery life is critical.
This device features extremely low quiescent current which is typically 1.
1µA.
Dropout voltage is also very low, typically less than 200mV at the maximum output current of 150mA.
The AAT3221/2 has an Enable pin feature, which when asserted will enter the LDO regulator into a shutdown mode removing power from its load and offering extended power conservation capabilities for portable battery powered applications.
The AAT3221/2 has output short circuit and over current protection.
In addition, the device also has an over temperature protection circuit, which will shutdown the LDO regulator during extended overcurrent events.
It is available with active high or active low enable input.
The AAT3221 and AAT3222 are available in space saving 5-pin SOT23 packages.
The AAT3221 is also available in the 8-pin SC70JW package.
The device is rated over a -40°C to 85°C temperature range.
Since only a small, 1µF ceramic output capacitor is recommended, often the only space used is that occupied by the AAT3221/2 itself.
The AAT3221/2 is truly a compact and cost effective voltage conversion solution.
The AAT3221/2 is similar to the AAT3220 with the exception that it offers further power savings with its enable pin.
Features • • • • • • • • • • • • • PowerLinear™ 1.
1 µA Quiescent Current Low Dropout: 200 mV (typical) Guaranteed 150 mA Output High accuracy: ±2% Current limit protection Over-Temperature protection Extremely Low power shutdown mode Low Temperature Coefficient Factory programmed output voltages • 1.
8V to 3.
5V Stable operation with virtually any output capacitor type Active high or low Enable pin 5-pin SOT23 or 8-pin SC70JW packages 4kV ESD Preliminary Information Applications • • • • • • • Cellular Phones Notebook Computers Portable Communication D...


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