L4931集成電路（IC）的線(xiàn)性+開(kāi)關(guān)穩(wěn)壓器規(guī)格書(shū)PDF中文資料

L4931屬于集成電路（IC）的線(xiàn)性+開(kāi)關(guān)穩(wěn)壓器。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的L4931穩(wěn)壓器 - 線(xiàn)性線(xiàn)性穩(wěn)壓器用于提供穩(wěn)定的輸出電壓，無(wú)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(gè)最小量，并且在工作時(shí)會(huì)將輸入端的任何多余電壓轉(zhuǎn)換為熱量。對(duì)于大多數(shù)應(yīng)用而言，雖然這種穩(wěn)壓器的效率低于開(kāi)關(guān)模式的穩(wěn)壓器，但它們通常更適合對(duì)噪聲高度敏感的應(yīng)用。

The L4931 series are very Low Drop regulators available in TO-220, SO-8, DPAK, PPAK and TO-92 packages and in a wide range of output voltages. The very Low Drop voltage (0.4V) and the very low quiescent current make them particularly suitable for Low Noise, Low Power applications and specially in battery powered systems.

1. Very low dropout voltage (0.4V)

2. Very low quiescent current

3. (Typ. 50 μA in off mode, 600μA in on mode)

4. Output current up to 250 mA

5. Logic-controlled electronic shutdown

6. Output voltages of 1.5; 2.5; 2.7; 3; 3.3; 3.5; 4;4.7; 5; 8; 12V

7. Internal current and thermal limit

8. Only 2.2μF for stability