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AAT3221IGV-2.6-T1 Datasheet(PDF) 1 Page - Advanced Analog Technology, Inc. |
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AAT3221IGV-2.6-T1 Datasheet(HTML) 1 Page - Advanced Analog Technology, Inc. |
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1 / 18 page  AAT3221/2 150mA NanoPower™ LDO Linear Regulator 3221.2005.12.1.11 1 PowerLinear™ General Description The AAT3221 and AAT3222 PowerLinear NanoPower low dropout (LDO) linear regulators are ideal for portable applications where extended battery life is critical. These devices feature extremely low quiescent current, typically 1.1µA. Dropout voltage is also very low, typically less than 200mV at the maximum output current of 150mA. The AAT3221/2 have an enable pin feature which, when asserted, will enter the LDO regulator into shutdown mode, removing power from its load and offering extended power conservation capabilities for portable battery-powered applications. The AAT3221/2 have output short-circuit and over- current protection. In addition, the devices also have an over-temperature protection circuit, which will shut down the LDO regulator during extended over-current events. The devices are available with active high or active low enable input. The AAT3221 and AAT3222 are available in Pb-free, space-saving 5-pin SOT23 packages. The AAT3221 is also available in a Pb-free, 8-pin SC70JW pack- age. The device is rated over the -40°C to +85°C temperature range. Since only a small, 1µF ceram- ic output capacitor is recommended, often the only space used is that occupied by the AAT3221/2 itself. The AAT3221/2 provide a compact and cost-effec- tive voltage conversion solution. The AAT3221 and AAT3122 are similar to the AAT3220, with the exception that they offer further power savings with an enable pin. Features • 1.1µA Quiescent Current • Low Dropout: 200mV (typical) • Guaranteed 150mA Output • High Accuracy: ±2% • Current Limit Protection • Over-Temperature Protection • Extremely Low Power Shutdown Mode • Low Temperature Coefficient • Factory-Programmed Output Voltages — 1.6V to 3.5V • Stable Operation With Virtually Any Output Capacitor Type • Active High or Low Enable Pin • 4kV ESD • 5-Pin SOT23 or 8-Pin SC70JW Package • -40°C to +85°C Temperature Range Applications • Cellular Phones • Digital Cameras • Handheld Electronics • Notebook Computers • PDAs • Portable Communication Devices • Remote Controls Typical Application AAT3221/2 IN EN INPUT GND OUT OUTPUT GND GND ENABLE (ENABLE) CIN 1 µF COUT 1 µF (EN) |
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