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MP3412 Datasheet(PDF) 1 Page - Monolithic Power Systems |
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MP3412 Datasheet(HTML) 1 Page - Monolithic Power Systems |
1 / 12 page MP3412 1.1A, 1MHz Synchronous Boost WLED Driver with Output Disconnect MP3412 Rev. 0.9 www.MonolithicPower.com 1 1/19/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. The Future of Analog IC Technology DESCRIPTION The MP3412 is a synchronous, fixed frequency, high efficiency step-up WLED driver with true output load disconnect function in a low profile 6-lead Thin-SOT23 package. The MP3412 can startup from an input voltage as low as 0.8V and provides in-rush current limiting as well as output short circuit protection. The open load protection is also integrated A switching frequency of 1MHz minimizes overall solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. Current mode PWM control with internal compensation reduces external parts, thereby saving critical board space. The device also features low shutdown current of under 1µA. The true output disconnect feature allows the output to be completely discharged in shutdown. It also limits the inrush of current during start-up, minimizing surge current seen by the input supply. The MP3412 is available in 6-pin thin SOT23 package. FEATURES • Input Range: 0.8V to 4.4V • Output Range: 2.5V to 5.0V • 0.8V Low Start-Up Voltage • Internal Power MOSFET and Synchronous Rectifier • 1MHz Fixed Switching Frequency • Current Mode Control with Internal Compensation • Up to 96% Efficiency • <1µA Shutdown Current • Tiny External Components • True Output Load Disconnect • Inrush Current Limiting and Internal Soft- Start • Open-Load Protection • Short-Circuit Protection • Available in TSOT23-6 Package APPLICATION • General LED Illuminations • Cellular Phones • Digital Cameras • Handheld Instruments • Wireless Handsets • GPS Receivers “Monolithic Power Systems”, “MPS”, and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION 50 55 60 65 70 75 80 85 90 95 100 01 23 45 VIN(V) Efficiency Io=200mA Io=80mA LDO Mode Boost Mode |
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