LD2979M33TR集成電路（IC）的線性+開關(guān)穩(wěn)壓器規(guī)格書PDF中文資料

LD2979M33TR屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的LD2979M33TR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(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。

Description

The LD2979 series are very low drop regulators available in SOT23-5L.

The very low drop-voltage and the very low quiescent current make them particularly suitable for low noise, low power applications and in battery powered systems.

Shutdown logic control function is available on five pin version (TTL compatible). This means that when the device is used as local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption.

Features

■ Very low dropout voltage (0.2 V typ. at 50 mA load)

■ Very low quiescent current (typ. 500 μA at 50 mA load)

■ Output current up to 50 mA

■ Logic-controlled electronic shutdown

■ Output voltages of 3.0; 3.3; 3.8; 5.0 V

■ Internal current and thermal limit

■ Supply voltage rejection: 63 dB (typ)

■ Only 1 μF for stability

■ Selection at 25 °C

■ Temperature range: -25 °C to 125 °C

■ Package available: SOT23-5L