MP3418 400mA, 1.2MHz, Synchronous, Step-up Converter with Output Disconnect The Future of Analog IC Technology DESCRIPTION FEATURES The MP3418 is a high-efficiency, synchronous, Up to 96% Efficiency currentmode, step-up converter with output 0.8V Low Voltage Start-Up disconnect. 0.6V-to-4V Input Range 1.8V-to-4V Output Range The MP3418 can start up from an input voltage Internal Synchronous Rectifier as low as 0.8V to provide inrush current limiting, 1.2MHz Fixed-Frequency Switching and output short-circuit protection. The integrated, P-channel, synchronous rectifier Typical 38A Quiescent Current improves efficiency and eliminates the need for Typical 0.1A Shutdown Current an external Schottky diode. The PMOS Current-Mode Control with Internal disconnects the output from the input when the Compensation part shuts down. This output disconnect feature True Output Disconnect from Input allows the output to be completely discharged, V >V Down Mode Operation IN OUT thus allowing the part to draw less than 1A in High Efficiency under Light-Load Conditions shutdown mode. Very Small External Components Inrush Current Limiting and Internal Soft- The 1.2MHz switching frequency allows for Start smaller external components, while the internal Over-Voltage Protection compensation and the soft-start minimize the Short-Circuit Protection external component count: these feature help to produce a compact solution for a wide current TSOT23-8 Package load range. APPLICATIONS The MP3418 is available in a small 8-pin Battery-Powered Products TSOT23 package. Personal Medical Devices Portable Media Players Wireless Peripherals Handheld Computers and Smartphones All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION CIRCUIT MP3418 Rev 1.0 www.MonolithicPower.com 1 2/7/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2013 MPS. All Rights Reserved. MP3418 400mA, 1.2MHz, SYNCHRONOUS, STEP-UP CONVERTER WITH OUTPUT DISCONNECT ORDERING INFORMATION Part Number* Package Top Marking MP3418GJ TSOT23-8 AET * For Tape & Reel, add suffix Z (e.g. MP3418GJZ) PACKAGE REFERENCE TOP VIEW IN 1 8 EN 2 7 OUT FB SW 3 6 AGND PGND 4 5 NC TSOT23-8 (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC SW Pin, OUT Pin ....................... -0.5V to +6.5V TSOT23-8 ............................. 100 ..... 55 ... C/W All other Pins ................................. -0.5V to +6V (2) Notes: Continuous Power Dissipation (T = 25C) A 1) Exceeding these ratings may damage the device............................................................... 1.25W 2) The maximum allowable power dissipation is a function of the maximum junction temperature T (MAX), the junction-to- J Junction Temperature .............................. 150C ambient thermal resistance , and the ambient temperature JA Lead Temperature ................................... 260C T . The maximum allowable continuous power dissipation at A Storage Temperature .............. 65C to +150C any ambient temperature is calculated by P (MAX)=(T (MAX)- D J T )/ . Exceeding the maximum allowable power dissipation A JA will cause excessive die temperature, and the regulator will go (3) Recommended Operating Conditions into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. Start-up Voltage V .......................... 0.8V to 4V ST 3) The device is not guaranteed to function outside of its operation conditions. Supply Voltage V ............................ 0.6V to 4V IN 4) Measured on JESD51-7 4-layer board. V .................................................. 1.8V to 4V OUT Operating Junction Temp. (T ). -40C to +125C J MP3418 Rev 1.0 www.MonolithicPower.com 2 2/7/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2013 MPS. All Rights Reserved.