EVALUATION KIT AVAILABLE Click here to ask about the production status of specific part numbers. MAX77839 5.5V Input, 4.4A/3.6A Switching Current 6A I Q Buck-Boost Converter General Description Benefits and Features The MAX77839 is a highly-efficient buck-boost regulator Flexible System Integration with an industry leading quiescent current of 6A targeted 1.8V to 5.5V Input Voltage Range for one-cell Li-ion and down to any battery chemistry with 2.3V to 5.3V Single Resistor Adjustable Output 1.8V discharge voltage. It supports input voltages of 1.8V 3A Maximum Output Current to 5.5V and an output voltage range of 2.3V to 5.3V. The 4.4A I , See TOC 24 and Options) LIM IC provides two different switching current limits to opti- 3.6A I , See TOC 23 and Options) LIM mize external component sizing based on given load cur- 96% Peak Efficiency (V = 3.6V, V = 3.3V) IN OUT rent requirements and = 4.4A (typ), and = Optional GPIO Pin (FPWM Input, POK Output) 3.6A (typ)), and two different GPIO pin configurations Low Supply Current that Extends Battery Life and = FPWM pin and = POK pin). These op- Skip Mode that Reduces Supply Current at Light tions provide design flexibility that allow the IC to cover a Loads wide range of applications and use cases while minimizing 6A Ultra-Low I Q board space. 2.2MHz (typ) Switching Frequency The IC features a single-resistor adjustable output voltage Integrated Protections that Provide System from 2.3V to 5.3V. A configurable GPIO pin allows to se- Robustness lect either a FPWM mode control input or a POK open Undervoltage Lockout (UVLO) drain output, depending on the system requirements. Overvoltage Protection (OVP) Maxim s unique buck-boost controller technology provides Cycle-by-Cycle Inductor Peak Current Limit high efficiency, excellent load and line transient response, Thermal Shutdown (T ) SHDN and a seamless transition between buck and boost modes Active Output Discharge of operation. Small Solution Size The MAX77839 is available in both a 2.07mm x 1.51mm, 2.07mm x 1.51mm, 0.4mm Pitch, 15-Bump WLP 15-bump wafer-level package (WLP), and a 2.5mm x 2.5mm x 2.0mm, 0.5mm Pitch, 11-Pin FC2QFN 2.0mm, 11-lead FC2QFN package. Ordering Information appears at end of data sheet. Applications Asset Tracking/Fleet Management 5G/2G/GSM Cellular Power RF Amplifier Smartphones ToF/Facial and Gesture Recognition System Power Pre-Regulation Single-Cell Li-ion Battery Powered Devices 19-100983 Rev 1 6/21MAX77839 5.5V Input, 4.4A/3.6A Switching Current 6A I Q Buck-Boost Converter Simplified Block Diagram L 1H LX1 LX2 1.8V to 5.5V DC SOURCE V OUT IN OUT 2.3V-5.3V CIN 16V COUT X7R MAX77839MAX77839 10V X7R 0805 OUTS 0805 10F 47F FPWM (A & C OPTIONS) ENABLE EN GPIO POK (B & D OPTIONS) BIAS SEL CBIAS 10V X7R R * 0402 SEL AGND PGND 2.2F *CHOOSE RSEL VALUE BASED ON VOUT, SEE TABLE 1 www.maximintegrated.com Maxim Integrated 2