ADP122AUJZ-2.9-R7

5.5 V输入300毫安，低静态电流， CMOS线性稳压器 5.5 V Input, 300 mA, Low Quiescent Current, CMOS Linear Regulator

Product Details

The ADP122/ADP123 are low quiescent current, low dropout linear regulators. They are designed to operate from an input voltage between 2.3 V and 5.5 V and to provide up to 300 mA of output current. The low 85 mV dropout voltage at a 300 mA load improves efficiency and allows operation over a wide input voltage range.

The low 170 μA of quiescent current at full load makes the ADP122 ideal for battery-operated portable equipment.

The ADP122 is capable of 31 fixed output voltages from 1.75 V to 3.3 V. The ADP123 is the adjustable version of the device and allows the output voltage to be set between 0.8 V and 5.0 V by an external voltage divider.

The ADP122/ADP123 are specifically designed for stable operation with tiny 1 μF ceramic input and output capacitors to meet the requirements of high performance, space constrained applications.

The ADP122/ADP123 have an internal soft start that gives a constant start-up time of 350 μs. Short-circuit protection and thermal overload protection circuits prevent damage in adverse conditions. The ADP122/ADP123 are available in a tiny, 5-lead TSOT package and 6-lead LFCSP package for the smallest footprint solution to meet a variety of portable applications.

**APPLICATIONS**

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Digital camera and audio devices

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Portable and battery-powered equipment

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Automatic meter reading AMR meters

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GPS and location management units

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Medical instrumentation

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Point-of-sale equipment

### Features and Benefits

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Input voltage supply range: 2.3 V to 5.5 V

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300 mA maximum output current

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Fixed and adjustable output voltage versions

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Very low dropout voltage:  85 mV at 300 mA load

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Low quiescent current: 45 μA at no load

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Low shutdown current: <1 μA

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Initial accuracy: ±1% accuracy

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See Data Sheet for additional features