Maxim Integrated MAX77659 SIMO Power Management IC (PMIC)

Maxim Integrated MAX77659 SIMO Power Management IC (PMIC)

Maxim Integrated MAX77659 SIMO Power Management IC (PMIC) is optimized for rechargeable earbuds, wearables, and other applications that emphasize low supply current and small solution size. The MAX77659 features a dual-input Single-Inductor Multiple-Output (SIMO) buck-boost regulator. The device provides one charging rail and three independently programmable power rails from a single inductor to minimize the total solution size. A 100mA LDO provides ripple rejection for audio and other noise-sensitive applications. The LDO can also be configured as a load switch to manage power consumption by disconnecting external blocks when not required. A highly configurable switching charger supports a wide range of Li+ battery capacities and includes battery temperature monitoring for additional safety (JEITA).

This MAX77659 PMIC includes two GPIOs and an analog multiplexer that switches several internal voltages 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 device. An internal on/off controller provides a controlled startup sequence and provides supervisory functionality for the regulator. Numerous factory programmable options allow the device to be tailored for many applications, enabling faster time to market.

The Maxim Integrated MAX77659 SIMO PMIC is offered in a compact 6.04mm x 6.04mm Wafer-Level Package (WLP) ideal for space-constrained applications.


  • Highly integrated
    • 3x output, Single-Inductor Multiple-Output (SIMO) buck-boost regulator
      • Supports wide output voltage range from 5.0V to 5.5V for all SIMO channels
    • 1x 100mA LDO/LSW
    • Smart Power Selector™ Li+/Li-Poly switching charger
    • 2x GPIO resources
    • Analog MUX output for power monitoring
    • Factory-ship mode (<200nA IQ)
    • Watchdog timer
  • Charger optimized for small battery size
    • Input operating voltage from 4.0V to 5.5V
    • Programmable fast-charge current from 5mA to 300mA
    • Programmable battery regulation voltage from 6.0V to 4.6V
    • Programmable termination current from 375mA to 45mA
    • Thermal regulation and JEITA compliance
  • Low Power
    • 3μA shutdown current
    • 5μA operating current (3 SIMO channels + 1 LDO)
  • Flexible and configurable
    • I2C-compatible interface and GPIO
  • Package information
    • -40°C to +85°C operating temperature range
    • -65°C to +150°C storage temperature range
    • +150°C junction temperature
    • 6.04mm x 6.04mm WLP-30
    • 4mm pitch, 6×5 array
    • Pb-free and RoHS compliant

Application Circuit


more information:

Please follow and like us:
Pin Share
About mixos

Mike is the founder and editor of, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

view all posts by admin
Notify of

Inline Feedbacks
View all comments
Get new posts by email:
Get new posts by email:

Join 97,426 other subscribers