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EV0043 Datasheet(PDF) 1 Page - Monolithic Power Systems |
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EV0043 Datasheet(HTML) 1 Page - Monolithic Power Systems |
1 / 13 page MP1517 3A, 25V, 1.1MHz Step-Up Converter MP1517 Rev. 1.4 www.MonolithicPower.com 1 4/28/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2006 MPS. All Rights Reserved. The Future of Analog IC Technology DESCRIPTION The MP1517 is a 3A, fixed frequency step-up converter ideal for medium-to-high current step-up, flyback and SEPIC applications. The high 1.1MHz switching frequency allows for smaller external components producing a compact solution for size constrained cameras, PDAs and cell phones. The low 0.7V feedback voltage offers higher efficiency in white LED driver applications including cell phone camera flash. The MP1517 regulates the output voltage up to 25V with efficiencies as high as 95%. Soft-start, cycle-by-cycle current limiting, and input under voltage lockout prevent overstressing or damage to sensitive external circuitry at startup and output short-circuit conditions. Current-mode regulation and external compensation components allow the MP1517 control loop to be optimized over a wide variety of input voltage, output voltage, and load current conditions. The MP1517 is available in the thermally enhanced QFN16 (4mm x 4mm) package. EVALUATION BOARD REFERENCE Board Number Dimensions EV0043 2.5”X x 2.0”Y x 0.4”Z FEATURES • 4A Peak Current Limit • Low 700mV Feedback Threshold • Internal 150mΩ Power Switch • Input Range of 2.6V to 25V • Up to 95% Efficiency • Zero Current Shutdown Mode • Under Voltage Lockout Protection • Open Load Protection • Soft-Start Operation • Thermal Shutdown • Tiny 4mm x 4mm 16-Pin QFN Package APPLICATIONS • Boost and SEPIC Regulators • Handheld Computers • Cell Phone Camera Flash, PDAs • Digital Still and Video Cameras “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION MP1517 IN 8 COMP FB SW 1 16 9, 10 SGND PGND 5, 13 11, 12 EN SS BP OLS 4 15 3 7 C5 10nF C4 10nF C3 10nF C6 OPTIONAL OFF ON VIN 5V D1 MBR320 VOUT 12V MP1517_TAC_S01 100 95 90 85 80 75 70 65 60 55 50 LOAD CURRENT (mA) MP1517-EC01 Efficiency vs Load Current 1 10 100 1000 VIN = 5V VOUT = 12V VOUT = 18V |
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