LD56050集成電路（IC）的線性+開關穩(wěn)壓器規(guī)格書PDF中文資料

LD56050屬于集成電路（IC）的線性+開關穩(wěn)壓器。由意法半導體集團制造生產的LD56050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換為熱量。對于大多數應用而言，雖然這種穩(wěn)壓器的效率低于開關模式的穩(wěn)壓器，但它們通常更適合對噪聲高度敏感的應用。

Description

The LD56050 is a high accuracy voltage regulator, which provides 0.5 A of current. It

is equipped with an NMOS pass transistor, whose gate is biased by a dedicated pin,

thus allowing an ultra low-drop performance even at very low input voltages.

It is available in DFN4 1.2 x 1.2 package, allowing the maximum space saving.

The device is stabilized with a small ceramic capacitor on the output. The ultra lowdrop, low quiescent current and short circuit current foldback make the LD56050

suitable for low power battery-operated applications.

An enable logic control function puts the LD56050 in shutdown mode allowing a total

current consumption lower than 0.1 μA. Thermal protection is also included.

Features

? Input voltage from 0.8 to 5.5 V

? Bias supply pin

? Ultra low-dropout voltage (80 mV typ. at 500 mA load)

? Low ground current (27 μA typ. at no-load)

? Output voltage tolerance: ± 1.5 overtemperature, 0.5 at 25 °C

? 500 mA guaranteed output current

? 50 mV output voltage step available from 0.8 V to 3.6 V

? Logic-controlled electronic shutdown

? Internal current limit with foldback

? Thermal shutdown

? Output active discharge function

? Available in DFN4 1.2 x 1.2 mm package

? Temperature range: -40 °C to 85 °C

Applications

? Mobile phones

? Tablets

? Battery-powered systems

? Camera supply