LM321屬于集成電路（IC）的穩(wěn)壓器-DC-DC開(kāi)關(guān)穩(wěn)壓器。由美國(guó)德州儀器公司制造生產(chǎn)的LM321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(chēng)為“控制器”P(pán)MIC 的類(lèi)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。

1 Features

1? (VCC = 5 V, TA = 25°C. Typical values unless

specified.)

? Gain-Bandwidth Product 1 MHz

? Low Supply Current 430 μA

? Low Input Bias Current 45 nA

? Wide Supply Voltage Range 3 V to 32 V

? Stable With High Capacitive Loads

? Single Version of LM324

2 Applications

? Chargers

? Power Supplies

? Industrial: Controls, Instruments

? Desktops

? Communications Infrastructure

3 Description

The LM321 brings performance and economy to low

power systems. With a high unity gain frequency and

a specified 0.4-V/μs slew rate, the quiescent current

is only 430-μA/amplifier (5 V). The input common

mode range includes ground and therefore the device

is able to operate in single supply applications as well

as in dual supply applications. It is also capable of comfortably driving large capacitive loads.

The LM321 is available in the SOT-23 package. Overall the LM321 is a low power, wide supply range

performance operational amplifier that can be

designed into a wide range of applications at an

economical price without sacrificing valuable board

space.