MP3221GJ-Z

MP3221 2.7A, 1.2MHz, High-Efficiency Step-Up Converter With Input Disconnect DESCRIPTION FEATURES The MP3221 is a 1.2MHz frequency, 6-pin TSOT23 current mode step up converter intended for small, low power applications. The device can step up three-cell alkaline, NiCd, and NiMH batteries, or a single-cell Li-on battery up to 6V. It is capable of delivering 1A output current at 5V with a supply voltage of 3V.              The MP3221 provides the internal soft start and compensation to minimize the external component count and help producing a compact solution. It integrates a FAULT driver for external PMOS to disconnect the output from input when the part shuts down or in output short circuit condition. This disconnect feature allows the output to be completely discharged, thus allowing the part to draw less than 1µA off current in shutdown mode. The MP3221 is available in a small 6-pin TSOT23 package. Integrated 88mΩ Power MOSFET 270µA Quiescent Current 2.5V to 6V Input Voltage 3V to 6V Output Voltage 1.2MHz Fixed Switching Frequency Internal 2.7A Switch Current Limit Integrated Input Disconnect Driver Internal Soft Start and Compensation True Output Disconnect from Input Under Voltage Lockout Short-Circuit Protection Over-Temperature Protection Available in a 6-Pin TSOT23-6 Package APPLICATIONS     Single-Cell Lion Battery or Three-Cell Alkaline, NiCd, or NiMH Battery Based Products Portable Media Players Wireless Peripherals Tablets and Smart Phones All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION MP3221 Rev. 1.0 9/23/2013 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. 1 MP3221–2.7A, 1.2MHZ, HIGH-EFFICIENCY STEP UP CONVERTER WITH INPUT DISCONNECT ORDERING INFORMATION Part Number* MP3221GJ Package TSOT23-6 Top Marking AFB * For Tape & Reel, add suffix –Z (e.g. MP3221GJ–Z); PACKAGE REFERENCE SW 1 6 FAULT GND 2 5 IN 4 EN FB 3 TSOT23-6 ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance VSW .................................................................... –0.3V(-2V for