CS5231-3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

CS5231-3屬于集成電路（IC）的線(xiàn)性+開(kāi)關(guān)穩(wěn)壓器。由安森美半導(dǎo)體公司制造生產(chǎn)的CS5231-3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。

500 mA, 3.3 V Linear Regulator with Auxiliary Control

The CS5231?3 combines a three?terminal linear regulator with circuitry controlling an external PFET transistor thus managing two input supplies. The part provides a 3.3 V regulated output either from the main 5.0 V supply or a 3.3 V auxiliary that switches on when the 5.0 V supply is not present. This delivers constant, uninterrupted power to the load. The CS5231?3 meets Intel’s “Instantly Available” power requirements which follows from the “Advanced Configuration and Power Interface” (ACPI) standards developed by Intel, Microsoft and Toshiba.

Features

? Linear Regulator

? 3.3 V ± 2.0 Output Voltage

? 3.0 mA Quiescent Current @ 500 mA

? Fast Transient Response

? Current Limit Protection

? Thermal Shutdown with Hysteresis

? 450 μA Reverse Output Current

? System Power Management

? Auxiliary Supply Control

? “Glitch Free” Transition Between Two Supplies

? Internally Fused Leads in SOIC?8 Package