EVALUATION KIT AVAILABLE Click here to ask about the production status of specific part numbers. MAX77654 Ultra-Low Power PMIC Featuring Single- Inductor, 3-Output Buck-Boost, 2-LDOs, Power- Path Charger for Small Li+, and Ship Mode General Description Benefits and Features The MAX77654 provides highly-integrated battery charg- Highly Integrated ing and power supply solutions for low-power applications 3x Output, Single-Inductor Multiple-Output (SIMO) where size and efficiency are critical. The IC features a Buck-Boost Regulator SIMO buck-boost regulator that provides three indepen- Supports Wide Output Voltage Range from 0.8V dently programmable power rails from a single inductor to to 5.5V for all SIMO Channels minimize total solution size. Two 100mA LDOs provide rip- 2x 100mA LDO/LSW ple rejection for audio and other noise-sensitive applica- Smart Power Selector Li+/Li-Poly Charger tions. The LDOs can also be configured as load switch- 3x GPIO Resources es to manage power consumption by disconnecting exter- Analog MUX Output for Power Monitoring nal blocks when not required. A highly-configurable linear Factory Ship Mode (< 200nA I ) Q charger supports a wide range of Li+ battery capacities Watchdog Timer and includes battery temperature monitoring for additional Low Power safety (JEITA). 0.3A Shutdown Current This device includes three GPIOs and an analog multi- 6A Operating Current (3 SIMO Channels + 2 plexer that switches several internal voltage and current LDOs) signals to an external node for monitoring with an external Charger Optimized for Small Battery Size 2 ADC. A bidirectional I C serial interface allows for config- Programmable Fast-Charge Current from 7.5mA to uring and checking the status of the devices. An internal 300mA on/off controller provides a controlled startup sequence for Programmable Battery Regulation Voltage from the regulators and provides supervisory functionality while 3.6V to 4.6V they are on. Numerous factory programmable options al- Programmable Termination Current from 0.375mA low the device to be tailored for many applications, en- to 45mA abling faster time to market. JEITA Battery Temperature Monitors Adjust Charge Current and Battery Regulation Voltage for Safe Applications Charging Bluetooth Headphones, Hearables Flexible and Configurable Wireless Speakers 2 I C-Compatible Interface and GPIO Fitness, Health, and Activity Monitors Factory OTP Options Available Wearables Small Size Safety and Security Monitors 2 6.52mm Wafer-Level Package (WLP) Sensor Nodes 30-Bump, 0.4mm Pitch, 6x5 Array Portable Consumer Devices Internet of Things (IoT) Ordering Information appears at end of data sheet. Smart Power Selector is a trademark of Maxim Integrated Products, Inc. 19-100560 Rev 8 9/21MAX77654 Ultra-Low Power PMIC Featuring Single-Inductor, 3-Output Buck-Boost, 2-LDOs, Power-Path Charger for Small Li+, and Ship Mode Simplified Block Diagram V BUS IN SBB CHGIN VSYS SYS BATT + Li-Ion IN LDO0 IN LDO1 GND SBB0 2.05V TBIAS SBB1 1.2V T THM SYSTEM SBB2 3.3V RESOURCES 1.5H PGND LXA LXB GPIO0 GPIO BST V IO 1.85V LDO0/LSW0 MAX77654MAX77654 1.2V LDO1/LSW1 VIO/POWER V L GPIO1 GPIO GPIO2 GPIO APPLICATION * SDA SDA PROCESSOR * SCL SCL * nRST nRST nEN * nIRQ nIRQ AMUX AMUX ADC INPUT *PULLUP RESISTORS NOT DRAWN www.maximintegrated.com Maxim Integrated 2