LD56100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LD56100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。

描述 Description

The LD56100 high accuracy voltage regulator provides 1 A of current from an input

voltage ranging from 1.8 V to 5.5 V, with a typical dropout voltage of 120 mV.

It is available in DFN8 (1.2 x 1.6 mm) package, allowing the maximum space saving.

The device is stabilized with a ceramic capacitor on the output. The ultra-low drop

voltage, low quiescent current and fast transient response, together with the internal

soft-start circuit, make the LD56100 suitable for low power battery-operated

applications.

An enable logic control function puts the LD56100 in shutdown mode allowing a total

current consumption lower than 0.1 μA. Short-circuit protection with current limit

foldback and thermal protection are also included.

特性 Features

? Input voltage from 1.8 to 5.5 V

? Ultra-low dropout voltage (120 mV typ. at 1 A load and VOUT = 3.3 V)

? Very low quiescent current (100 μA typ. at no-load, 0.03 μA typ. in off mode)

? Output voltage tolerance: ± 1 from -40 °C to +85 °C

? Ultra-low Noise: 13 μV RMS Noise from 10 Hz to 100 kHz at VOUT = 3.0 V

? High PSRR (70 dB@1 kHz)

? Wide range of output voltages available on request: from 1.0 V up to 5.0 V in 50

mV step

? Logic-controlled electronic shutdown

? Internal soft-start

? Optional output voltage discharge feature

? Compatible with ceramic capacitor COUT = 1 μF

? Internal current limit foldback and thermal protections

? Available in DFN8 (1.2 x 1.6 mm)

? Operating temperature range: -40 °C to 125 °C

Applications

? Mobile phones

? Tablets

? Battery-powered systems

? Camera supply