General Description

The MIC5200 is an efficient linear voltage regulator with very low dropout voltage (typically 17 mV at light loads and 200 mV at 100 mA), and very low ground current (1 mA at 100 mA output), offering better than 1 initial accuracy with a logic-compatible ON/OFF switching input. Designed especially for hand-held battery-powered devices, the MIC5200 is switched by a CMOS- or TTL-compatible logic signal. The ENABLE control may be tied directly to VIN if unneeded. When disabled, power consumption drops nearly to zero. The ground current of the MIC5200 increases only slightly in dropout, further prolonging battery life. Key MIC5200 features include protection against reversed battery, current limiting, and overtemperature shutdown.

The MIC5200 is available in several fixed voltages and accuracy configurations. Other options are available; contact Microchip for details.

Features

? High Output Voltage Accuracy

? Variety of Output Voltages

? Guaranteed 100 mA Output

? Low Quiescent Current

? Low Dropout Voltage

? Extremely Tight Load and Line Regulation

? Very Low Temperature Coefficient

? Current and Thermal Limiting

? Zero OFF Mode Current

? Logic-Controlled Electronic Shutdown

? Available in 8-Lead SOIC, MM8 8-Lead MSOP, and SOT-223 Packages

Applications

? Cellular Telephones

? Laptop, Notebook, and Palmtop Computers

? Battery-Powered Equipment

? PCMCIA VCC and VPP Regulation/Switching

? Barcode Scanners

? SMPS Post-Regulator/DC-to-DC Modules

? High Efficiency Linear Power Supplies

MIC5200-3.3YMM屬于集成電路（IC） > 線性 + 開關穩(wěn)壓器。微芯科技股份有限公司制造生產(chǎn)的MIC5200-3.3YMM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換為熱量。對于大多數(shù)應用而言，雖然這種穩(wěn)壓器的效率低于開關模式的穩(wěn)壓器，但它們通常更適合對噪聲高度敏感的應用。