Overview

Features and Benefits

  • 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)

Product Details

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).

The devices include other features such as current sinks for driving LED indicators 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 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 when the devices are on. Numerous factory programmable options allow the device to be tailored for many applications, enabling faster time to market.

Design Solution: Can You Hear Me Now? Extend the Life of Your Hearable Device ›

Design Solution: Hearables Get Longer Life with SIMO ›

Applications

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (3)

Tools & Simulations

Product Recommendations

MAX77650 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

Sample & Buy


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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.