Ultra-Low Power PMIC Featuring Single-Inductor, 3-Output Buck-Boost, 2-LDOs, Power-Path Charger for Small Li+, and Ship Mode

Highly-Integrated Battery Charging and Power Solution for Low-Power, Size-Constrained Applications

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The MAX77654 provides highly-integrated battery charging and power supply solutions for low-power applications where size and efficiency are critical. The IC features a SIMO buck-boost regulator that provides three independently programmable power rails from a single inductor to minimize total solution size.  Two 100mA LDOs provide ripple rejection for audio and other noise-sensitive applications. The LDOs can also be configured as load switches to manage power consumption by disconnecting external blocks when not required. A highly-configurable linear charger supports a wide range of Li+ battery capacities and includes battery temperature monitoring for additional safety (JEITA).

This device includes three GPIOs and an analog multiplexer that switches several internal voltage and current signals to an external node for monitoring with an external ADC. A bidirectional I2C serial interface allows for configuring and checking the status of the devices. An internal on/off controller provides a controlled startup sequence for the regulators and provides supervisory functionality while they are on. Numerous factory programmable options allow the device to be tailored for many applications, enabling faster time to market.

MAX77654: Simplified Block Diagram MAX77654: Simplified Block Diagram Enlarge+

Key Features

  • Highly Integrated
    • 3x Output, Single-Inductor Multiple-Output (SIMO) Buck-Boost Regulator
      • Supports Wide Output Voltage Range from 0.8V to 5.5V for all SIMO Channels
    • 2x 100mA LDO/LSW
    • Smart Power Selector™ Li+/Li-Poly Charger
    • 3x GPIO Resources
    • Analog MUX Output for Power Monitoring
    • Factory Ship Mode (< 200nA IQ)
    • Watchdog Timer
  • Low Power
    • 0.3μA Shutdown Current
    • 6μA Operating Current (3 SIMO Channels + 2 LDOs)
  • Charger Optimized for Small Battery Size
    • Programmable Fast-Charge Current from 7.5mA to 300mA
    • Programmable Battery Regulation Voltage from 3.6V to 4.6V
    • Programmable Termination Current from 0.375mA to 45mA
    • JEITA Battery Temperature Monitors Adjust Charge Current and Battery Regulation Voltage for Safe Charging
  • Flexible and Configurable
    • I2C-Compatible Interface and GPIO
    • Factory OTP Options Available
  • Small Size
    • 6.52mm2 Wafer-Level Package (WLP)
    • 30-Bump, 0.4mm Pitch, 6x5 Array
    • Small Total Solution Size (29.7mm2)


  • Bluetooth Headphones, Hearables
  • Wireless Speakers
  • Fitness, Health, and Activity Monitors
  • Wearables
  • Safety and Security Monitors
  • Sensor Nodes
  • Portable Consumer Devices
  • Internet of Things (IoT)

See parametric specs for Multifunction PMICs (81)

Part NumberPrimary TopologyMonitor/Control FeaturesDC-DC/Power FeaturesBattery Charger FeaturesInterface TypeVIN
minmaxminmaxSee Notes
Dynamic V Adj.
Feedback Integrator
Low Batt./POK Output
Output OVP
Output UVP
Real Time Clock
Reset Output
Serial Interface
Volt. or PWM Controlled Output
Current Limit
Internal Switch
Single Inductor Multiple Output
Soft Start
Battery Charger
Charge Timer
Input Current Limit
Smart Pwr. Selector
Thermal Die Regulation
Thermistor Input
USB Input
$1.90 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Request Reliability Report for: MAX77654 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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Related Resources

Wearable Power Management Solution

  • Extend Battery Use Time Between Battery Charging
  • Easy-to-Implement Li+ Battery Charging
  • Minimize Solution Footprint Through High Integration