Description

The SC1563 is a high performance positive voltage regulator designed for use in applications requiring very low dropout voltage at up to 500mA. Since it has superior dropout characteristics compared to regular LDOs, it can be used to supply 2.5V on motherboards or 2.8V on peripheral cards from the 3.3V supply with no heatsink. Additionally, the SC1563 has a shutdown pin to further reduce power dissipation while shut down. The SC1563 provides excellent regulation over variations in line, load and temperature.

A wide range of fixed output voltage options are available. In addition, the output voltage of every device can be adjusted between 1.2V and 4.8V using external resistors. The SC1563 comes in the space saving 5-pin SOT-23 package.

Features

? 350mV dropout @ 500mA

? Designed to operate with ceramic capacitors

? Adjustable output from 1.2V to 4.8V

? Multiple output voltage options (all parts also adjustable externally using resistors)

? Over current and over temperature protection

? 2μA quiescent current in shutdown

? No minimum load current requirement

? Low reverse leakage (output to input)

? Full industrial temperature range

? 5-pin SOT-23 surface mount package. Also available in Lead-free, fully WEEE and RoHS compliant

Applications

? Personal Digital Assistants

? Battery powered systems

? Motherboards

? Peripheral cards

? PCMCIA cards

SC1563屬于集成電路（IC） > 線性 + 開關(guān)穩(wěn)壓器。Semtech Corporation制造生產(chǎn)的SC1563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。