MPQ28164 High-Efficiency, Single-Inductor, Buck-Boost Converter with 4.2A Switches DESCRIPTION FEATURES The MPQ28164 is a high-efficiency, low- 1.8V Minimum Start-Up Input Voltage quiescent current, buck-boost converter that 1.2V to 5.5V Input Work Range operates from an input voltage above, equal to, 1.5V to 5V Output Range or below the output voltage. The MPQ28164 4.2A Switching Current Limit provides a compact solution for products 3.3V/2A Load Capability from a 2.5V to 5.5V powered by one-cell Lithium-ion or multi-cell Input Supply alkaline batteries where the output voltage is 2MHz Fixed or External Synchronous within the battery voltage range. Switching Frequency Selectable PSM and PWM Mode The MPQ28164 uses current-mode control with a fixed PWM frequency for optimal stability and Typical 25A Quiescent Current transient response. The fixed 2MHz switching High Efficiency up to 95% frequency and integrated low R MOSFETs DS(ON) Load Disconnect during Shutdown minimize the solution footprint while maintaining Internal Soft Start (SS) and Compensation high efficiency. Power Good Indicator Hiccup Mode for Short-Circuit Protection To ensure the longest possible battery life, the (SCP) MPQ28164 uses an optional pulse-skipping Over-Temperature Protection (OTP) mode that reduces the switching frequency Available in a Small QFN-11 (2mmx3mm) under light-load conditions. For other low-noise Package applications where pulse-skipping mode may cause interference, a high-logic input on the APPLICATIONS MODE/SYNC pin guarantees fixed-frequency Battery-Powered Devices PWM operation under all load conditions. Portable Instruments The MPQ28164 operates with an input voltage Tablet PCs from 1.2V to 5.5V to provide an adjustable Super-Cap Chargers output voltage from 1.5V to 5V. With an input All MPS parts are lead-free, halogen-free, and adhere to the RoHS from 2.5V to 5.5V, the device can supply 2A of directive. For MPS green status, please visit the MPS website under current to the load with a 3.3V output voltage. Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. The MPQ28164 is available in a small QFN-11 (2mmx3mm) package. TYPICAL APPLICATION L1 1H SW1 SW2 VOUT=3.3V VIN VOUT VIN C2 R1 C1 22Fx2 560k 22F EN FB R2 VCC 100k C3 1F MODE/SYNC PG AGND PGND MPQ28164 Rev. 1.0 www.MonolithicPower.com 1 11/13/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2018 MPS. All Rights Reserved. MPQ28164 SINGLE-INDUCTOR, BUCK-BOOST CONVERTER W/ 4.2A SWITCHES ORDERING INFORMATION Part Number* Package Top Marking MPQ28164GD QFN-11 (2mmx3mm) See Below * For Tape & Reel, add suffix Z (e.g. MPQ28164GDZ). TOP MARKING ANA: Product code of MPQ28164GD Y: Year code W: Week code LLL: Lot number PACKAGE REFERENCE TOP VIEW EN 1 11 VIN MODE/ 2 SYNC 10 SW1 PG 3 PGND 9 VCC 4 8 SW2 AGND 5 VOUT 7 FB 6 QFN-11 (2mmx3mm) MPQ28164 Rev. 1.0 www.MonolithicPower.com 2 11/13/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2018 MPS. All Rights Reserved.