LP2951屬于集成電路（IC）的穩(wěn)壓器-線性。由安森美半導(dǎo)體公司制造生產(chǎn)的LP2951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 LP2950 and LP2951 are micropower voltage regulators that are specifically designed to maintain proper regulation with an extremely low input?to?output voltage differential. These devices feature a very low quiescent bias current of 75 A and are capable of supplying output currents in excess of 100 mA. Internal current and thermal limiting protection is provided.

特性 Features

? Pb?Free Packages are Available

? Low Quiescent Bias Current of 75 A

? Low Input?to?Output Voltage Differential of 50 mV at 100 A and 380 mV at 100 mA

? 5.0 V, 3.3 V or 3.0 V ±0.5 Allows Use as a Regulator or Reference

? Extremely Tight Line and Load Regulation

? Requires Only a 1.0 F Output Capacitor for Stability

? Internal Current and Thermal Limiting

? NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes

LP2951 Additional Features

? Error Output Signals an Out of Regulation Condition

? Output Programmable from 1.25 V to 29 V

? Logic Level Shutdown Input