DESCRIPTION

The LF00 series are very Low Drop regulators available in PENTAWATT, TO-220, ISOWATT220, DPAK and PPAK package and in a wide range of output voltages.

The very Low Drop voltage (0.45V) and the very low quiescent current make them particularly suitable for Low Noise, Low Power applications and specially in battery powered systems.

■ VERY LOW DROPOUT VOLTAGE (0.45V)

■ VERY LOW QUIESCENT CURRENT (TYP. 50 μA IN OFF MODE, 500μA IN ON MODE)

■ OUTPUT CURRENT UP TO 500 mA

■ LOGIC-CONTROLLEDELECTRONIC SHUTDOWN

■ OUTPUT VOLTAGESOF 1.25; 1.5; 1.8; 2.5; 2.7; 3; 3.3; 3.5; 4; 4.5; 4.7; 5; 5.2; 5.5; 6; 8; 8.5; 9; 12V

■ INTERNAL CURRENT AND THERMAL LIMIT

■ ONLY 2.2μF FOR STABILITY

■ AVAILABLEIN ± 1 (AB) OR ± 2 (C) SELECTIONAT 25 oC

■ SUPPLY VOLTAGE REJECTION: 80 db (TYP.)

LF27ABDT屬于集成電路（IC） > 線性 + 開關(guān)穩(wěn)壓器。意法半導(dǎo)體（ST）集團(tuán)制造生產(chǎn)的LF27ABDT穩(wěn)壓器 - 線性線性穩(wěn)壓器用于提供穩(wěn)定的輸出電壓，無論負(fù)載電流、輸入電壓或環(huán)境因素如何變化，這些輸出電壓通常都要保持不變。它們的工作原理要求輸入電壓維持在高于所需的輸出電壓，而且要超出某個最小量，并且在工作時會將輸入端的任何多余電壓轉(zhuǎn)換為熱量。對于大多數(shù)應(yīng)用而言，雖然這種穩(wěn)壓器的效率低于開關(guān)模式的穩(wěn)壓器，但它們通常更適合對噪聲高度敏感的應(yīng)用。