ADP124ACPZ-2.8-R7

5.5 V输入500毫安，低静态电流， CMOS线性稳压器 5.5 V Input, 500 mA, Low Quiescent Current, CMOS Linear Regulators

Product Details

The ADP124/ADP125 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 500 mA of output current. The low 130 mV dropout voltage at a 500 mA load improves efficiency and allows operation over a wide input voltage range.

The low 210 μA of quiescent current with a 500 mA load makes the ADP124/ADP125 ideal for battery-operated portable equipment. The ADP124 is capable of 31 fixed-output voltages from 1.75 V to 3.3 V. The ADP125 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 ADP124/ADP125 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 ADP124/ADP125 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 ADP124/ADP125 are available in an 8-lead exposed paddle MSOP package. When compared with the standard MSOP package, the exposed paddle MSOP package has lower thermal resistance θJA. The lower thermal resistance package allows the ADP124/ADP125 to meet the needs of a variety of portable applications while minimizing the rise in junction temperature.

**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 load power

### Features and Benefits

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Input voltage supply range: 2.3 V to 5.5 V

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500 mA maximum output current

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Fixed and adjustable output voltage versions

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1% initial accuracy

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Up to 31 fixed-output voltage options available from 1.75 V to 3.3 V

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Adjustable-output voltage range from 0.8 V to 5.0 V

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Very low dropout voltage: 130 mV

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Low quiescent current: 45 μA

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Low shutdown current: <1 μA

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Excellent PSRR performance: 60 dB at 100 kHz

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Excellent load/line transient response

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See data sheet for additional features