MP8670DN-LF Monolithic Power Systems

MP8670 6A, 30V, 420KHz Step-Down Converter with Synchronizable Gate Driver The Future of Analog IC Technology DESCRIPTION FEATURES The MP8670 is a monolithic step-down switch Wide 4.5V to 30V Operating Input Range mode converter with a built-in internal power 6A Continuous Output Current MOSFET. It achieves 6A continuous output 50m Internal Power MOSFET Switch current over a wide input supply range with Synchronizable Gate Driver Delivers up to excellent load and line regulation. 95% Efficiency Fixed 420KHz Frequency Current mode operation provides fast transient Synchronizable up to 1.5MHz response and reliable over-current protection. Cycle-by-Cycle Over Current Protection The MP8670 requires a minimum number of Thermal Shutdown readily available standard external components Output Adjustable from 0.8V and is available in an 8-pin SOIC package with Stable with Low ESR Output Ceramic exposed pad. Capacitors Available in a Thermally Enhanced 8-Pin SOIC Package APPLICATIONS Digital Set Top Boxes Personal Video Recorders Broadband Communications Flat Panel Television and Monitors MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. MP8670 Rev. 1.3 www.MonolithicPower.com 1 4/4/2011 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved. MP8670 6A, 30V, 420KHZ STEP-DOWN WITH SYNCHRONIZABLE GATE DRIVER TYPICAL APPLICATION Efficiency vs Output Current 8 2 100 V IN BST IN V =12V C4 IN 100nF MP8670 90 16V 1 V OUT SW V =28V IN 80 3.3V 3 VCC M2 4 70 BG 60 7 6 OFF ON EN/SYNC FB 50 GND 40 5 V =3.3V OUT 30 0 123456 OUTPUT CURRENT(A) MP8670 Rev. 1.3 www.MonolithicPower.com 2 4/4/2011 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved. EFFICIENCY(%)