New Product Introduction

Maxim MAX77650 ultra-low power PMIC with 3-output SIMO

The MAX77650/MAX77651 provide highly-integrated battery charging and power supply solutions for low-power wearable applications

Maxim MAX77650 product diagram

The MAX77650/MAX77651 provide highly-integrated battery charging and power supply solutions for low-power wearable applications where size and efficiency are critical. Both devices feature a SIMO buck-boost regulator that provides three independently programmable power rails from a single inductor to minimize total solution size. A 150mA LDO provides ripple rejection for audio and other noise-sensitive applications. A highly configurable linear charger supports a wide range of Li+ battery capacities and includes battery temperature monitoring for additional safety (JEITA).

 

Key features

  • Highly Integrated
  • Low Power
  • Charger Optimized for Small Battery Size
  • Flexible and Configurable

 

Additional features

  • Highly Integrated

    - Smart Power Selector™ Li+/Li-Poly Charger
    - 3 Output, Single-Inductor Multiple-Output (SIMO) Buck-Boost Regulator
    - 150mA LDO
    - 3-Channel Current Sink Driver
    - Analog MUX Output for Power Monitoring
     
  • Low Power

    - 0.3µA Shutdown Current
    - 5.6µA Operating Current (3 SIMO Channels + LDO)
     
  • 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

    - 2.75mm × 2.15mm × 0.7mm WLP Package
    - 30-Bump, 0.4mm-Pitch WLP, 6x5 Array
    - Small Total Solution Size (19.2mm2)

 

Applications

  • Bluetooth Headphones/Hearables


Upcoming webinar

 

MAX77650/MAX77651 evaluation kit

The MAX77650/MAX77651 evaluation kit (EV kit) is a fully assembled and tested printed circuit board (PCB) that demonstrates the MAX77650/MAX77651. The EV kit allows for easy evaluation of the various MAX77650/MAX77651 features, including the SIMO buck-boost regulator, linear regulator, analog multiplexer, smart battery charger, on/off controller, and I2C interface.

The MAX77650 and MAX77651 EV kits are identical aside from the device (U1), silkscreen, and two resistive dividers at the SIMO outputs (see the MAX77650/MAX77651 EV Kit Differences section). The MAX77650/MAX77651 devices themselves have different output voltage ranges for the SIMO buck-boost regulator. 

 

Maxim MAX77650 ultra-low power PMIC | EBV Elektronik

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