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The LP2985 family of fixed-output, low-dropout regulators offers exceptional, cost-effective performance forboth portable and nonportable applications.Available in voltages of 2.5 V, 2.6 V, 2.7 V, 2.8 V, 2.85 V, 3 V,3.1 V, 3.2 V, 3.3 V, and 5 V, the family has an output tolerance of 1% for the A version (1.5% for the non-A version)and is capable of delivering 150-mA continuous load current. Standard regulator features, such as over-currentand over-temperature protection, are included.
The LP2985 has a host of features that makes the regulator an ideal candidate for a variety of portableapplications:• Low dropout: A PNP pass element allows a typical dropout of 280 mV at 150-mA load current and 7 mVat 1-mA load.• Low quiescent current: The use of a vertical PNP process allows for quiescent currents that areconsiderably lower than those associated with traditional lateral PNP regulators.• Shutdown: A shutdown feature is available, allowing the regulator to consume only 0.01 µA when theON/OFF pin is pulled low.• Low-ESR-capacitor friendly: The regulator is stable with low-ESRcapacitors, allowing the use of small,inexpensive, ceramic capacitors in cost-sensitive applications.• Low noise: A BYPASS pin allows for low-noise operation, with a typical output noise of 30 µV (RMS),with the use of a 10-nF bypass capacitor.