LP2981-29

单输出 LDO、100mA、固定电压 2.9V、关断状态、1.25% 容限

The LP2981 and LP2981A families of fixed-output, low-dropout regulators offer exceptional, cost-effective performance for both portable and non-portable applications. Available in fixed voltages of 2.8 V, 3 V, 3.3 V, and 5 V, the family has an output tolerance of 0.75% for the A-grade devices 1.25% for the standard grade and is capable of delivering 100-mA continuous load current. Standard regulator features, such as overcurrent and overtemperature protection, are included.

The LP2981 and LP2981A have features that make the regulators ideal candidates for a variety of portable applications:

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Low dropout: A PNP pass element allows a typical dropout of 200 mV at 100-mA load current and 7 mV at 1-mA load.

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Low quiescent current: The use of a vertical PNP process allows for quiescent currents that are considerably lower than those associated with traditional lateral PNP regulators.

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Shutdown: A shutdown feature is available, allowing the regulator to consume only 0.01 µA when the ON/OFF pin is pulled low.

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Output Tolerance of

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0.75% A Grade

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1.25% Standard Grade

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Ultra-Low Dropout Typically:

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200 mV at Full Load of 100 mA

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7 mV at 1 mA

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Low IQ: 600 µA Typical at Full Load of 100 mA

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Shutdown Current: 0.01 µA Typical

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Fast Transient Response to Line and Load

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Overcurrent and Thermal Protection

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High Peak Current Capability

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Low ZOUT Over Wide Frequency Range

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–40°C to 125°C Temperature Range