LM2931CD屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由安森美半導(dǎo)體公司制造生產(chǎn)的LM2931CD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，而且要超出某個最小量，并且在工作時會將輸入端的任何多余電壓轉(zhuǎn)換為熱量。對于大多數(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噪聲高度敏感的應(yīng)用。

The LM2931 series consists of positive fixed and adjustable output voltage regulators that are specifically designed to maintain proper regulation with an extremely low input?to?output voltage differential. These devices are capable of supplying output currents in excess of 100 mA and feature a low bias current of 0.4 mA at 10 mA output.

Designed primarily to survive in the harsh automotive environment, these devices will protect all external load circuitry from input fault conditions caused by reverse battery connection, two battery jump starts, and excessive line transients during load dump. This series also includes internal current limiting, thermal shutdown, and additionally, is able to withstand temporary power?up with mirror?image insertion.

Due to the low dropout voltage and bias current specifications, the LM2931 series is ideally suited for battery powered industrial and consumer equipment where an extension of useful battery life is desirable. The ‘C’ suffix adjustable output regulators feature an output inhibit pin which is extremely useful in microprocessor?based systems.

特性 Features

? Input?to?Output Voltage Differential of < 0.6 V @ 100 mA

? Output Current in Excess of 100 mA

? Low Bias Current

? 60 V Load Dump Protection

? ?50 V Reverse Transient Protection

? Internal Current Limiting with Thermal Shutdown

? Temporary Mirror?Image Protection

? Ideally Suited for Battery Powered Equipment

? Economical 5?Lead TO?220 Package with Two Optional Leadforms

? Available in Surface Mount SOP?8, D2PAK and DPAK Packages

? High Accuracy (±2.5) Reference (LM2931AC) Available

? NCV Prefix for Automotive and Other Applications Requiring

Unique Site and Control Change Requirements; AEC?Q100

Qualified and PPAP Capable

? Pb?Free Packages are Available

Applications

? Battery Powered Consumer Products

? Hand?held Instruments

? Camcorders and Cameras