MP28164 High-Efficiency, Single-Inductor, Buck-Boost Converter with 4.2A Switches The Future of Analog IC Technology DESCRIPTION FEATURES 1.8V Minimum Start-Up Input Voltage The MP28164 is a high-efficiency, low- 1.2V to 5.5V Input Work Range quiescent current, buck-boost converter that operates from an input voltage above, equal to, 1.5V to 5V Output Range or below the output voltage. The device 4.2A Switching Current Limit provides a compact solution for products 3.3V/2A Load Capability from a 2.5V-to- powered by one-cell Lithium-Ion or multi-cell 5.5V Input Supply alkaline batteries where the output voltage is 2MHz Fixed or External Synchronous within the battery voltage range. Switching Frequency Selectable PSM/PWM Mode The MP28164 uses current-mode control with Typical 25 A Quiescent Current fixed PWM frequency for optimal stability and High Efficiency up to 95% transient response. The fixed 2MHz switching Load Disconnect during Shutdown frequency and integrated low R MOSFETs DS(ON) Internal Soft Start and Compensation minimize the solution footprint while maintaining high efficiency. Power Good Indicator Hiccup Mode for Short-Circuit Protection To ensure the longest possible battery life, the (SCP) MP28164 uses an optional pulse skipping mode Over-Temperature Protection (OTP) that reduces the switching frequency under Available in a Small QFN-11 (2mmx3mm) light-load conditions. For other low-noise Package applications where pulse skipping mode may cause interference, a high-logic input on APPLICATIONS MODE/SYNC guarantees fixed-frequency PWM Battery-Powered Devices operation under all load conditions. Portable Instruments The MP28164 operates with an input voltage Tablet PC from 1.2V to 5.5V to provide an adjustable Super-Cap Charger output voltage from 1.5V to 5V. With an input All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. from 2.5V to 5.5V, the device can supply 2A of For MPS green status, please visit the MPS website under Quality current to the load with a 3.3V output voltage. Assurance. MPS and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc. The MP28164 is available in a small QFN-11 (2mmx3mm) package. TYPICAL APPLICATION 100 95 90 85 80 75 70 65 60 55 50 0.001 0.01 0.1 1 10 MP28164 Rev. 1.0 www.MonolithicPower.com 1 3/28/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2016 MPS. All Rights Reserved. MP28164 SINGLE-INDUCTOR, BUCK-BOOST CONVERTER WITH 4.2A SWITCHES ORDERING INFORMATION Part Number* Package Top Marking MP28164GD QFN-11 (2mmx3mm) See Below * For Tape & Reel, add suffix Z (e.g. MP28164GDZ) TOP MARKING ANA: Product code of MP28164GD Y: Year code WW: Week code LLL: Lot number PACKAGE REFERENCE TOP VIEW QFN-11 (2mmx3mm) MP28164 Rev. 1.0 www.MonolithicPower.com 2 3/28/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2016 MPS. All Rights Reserved.