描述 Description

MIC2570 is a micropower boost switching regulator that operates from two alkaline, two nickel-metal-hydride cells, or one lithium cell.The MIC2570 accepts a positive input voltage between 1.3V and 15V. Its typical no-load supply current is 130μA.The MIC2570 is available in selectable fixed output or adjustable output versions. The MIC2570-1 can be configured for 2.85V, 3.3V, or 5V by connecting one of three separate feedback pins to the output. The MIC2570-2 can be configured for an output voltage ranging between its input voltage and 36V, using an external resistor network.The MIC2570 has a fixed switching frequency of 20kHz. An external SYNC connection allows the switching frequency to be synchronized to an external signal.The MIC2570 requires only four components (diode, inductor, input capacitor and output capacitor) to implement a boost regulator. A complete regulator can be constructed in a 0.6 in2 area.All versions are available in an 8-lead SOIC with an operating range from -40°C to +85°C.

特性 Features

? Operates from a two-cell supply
?1.3V to 15V operation
? 130μA typical quiescent current
? Complete regulator fits 0.6 in2 area
? 2.85V/3.3V/5V selectable output voltage (MIC2570-1)
? Adjustable output up to 36V (MIC2570-2)
? 1A current limited pass element
? Frequency synchronization input
? 8-lead SOIC package

簡(jiǎn)介

MIC2570屬于集成電路（IC）的穩(wěn)壓器-DC-DC開(kāi)關(guān)穩(wěn)壓器。由制造生產(chǎn)的MIC2570穩(wěn)壓器 - DC-DC 開(kāi)關(guān)穩(wěn)壓器DC-DC 開(kāi)關(guān)穩(wěn)壓器 PMIC（電源管理集成電路）產(chǎn)品族中的產(chǎn)品是元器件級(jí)設(shè)備，用于需要穩(wěn)定 DC 輸入電壓和/或?qū)⑵滢D(zhuǎn)換為不同幅度的輸出電壓的應(yīng)用。這些器件與稱為“控制器”P(pán)MIC 的類似產(chǎn)品的區(qū)別在于集成了主開(kāi)關(guān)元件，設(shè)備提供的電力會(huì)通過(guò)該元件。