LP38501-ADJ

用于 2.7V 至 5.5V 输入的 3A FlexCap 低压降线性稳压器

’s FlexCap low-dropout LDO linear regulators feature unique compensation that allow use of any type of output capacitor with no limits on minimum or maximum equivalent series resistance ESR. The LP38501 and LP38503 series of LDOs operate from a 2.7-V to 5.5-V input supply. These ultra-low-dropout linear regulators respond very quickly to step changes in load, making them suitable for low-voltage microprocessor applications. Developed on a CMOS process utilizing a PMOS pass transistor the and LP38503-ADJ have low quiescent currents that change little with load current.

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GND Pin Current: Typically 2 mA at 3-A load current.

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Disable Mode: Typically 25-nA quiescent current when the EN pin is pulled low.

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Simplified Compensation: Stable with any type of output capacitor, regardless of ESR.

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Precision Output: grade versions available with 1.5% VADJ tolerance 25°C and 3% over line, load, and temperature.

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Input Voltage: 2.7 V to 5.5 V

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Adjustable Output Voltage: 0.6 V

to 5 V

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FlexCap: Stable with Ceramic, Tantalum,

or Aluminum Capacitors

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Stable With 10-µF Input and

Output Capacitors

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Low Ground-Pin Current

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25-nA Quiescent Current in Shutdown Mode

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Ensured Output Current of 3 A

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Ensured VADJ Accuracy of

±1.5% at 25°C A Grade

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Ensured Accuracy of ±3.5% at

25°C STD

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Overtemperature and Overcurrent Protection

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ENABLE EN Pin LP38501 only

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–40°C to +125°C Operating

Temperature Range