MAX77681
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MAX77681

3-Output SIMO Buck-Boost Regulator with Power Sequencer and 3μA IQ

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Always-On, Low power application mini PMIC. Single inductor with 3 buck-boost outputs

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $2.01
Features
  • Single-Inductor, Multiple-Output (SIMO) Extends Battery Life
    • 300nA Shutdown Current
    • 3.0µA Operating Quiescent Current (3 SIMO Channels On)
    • Improves Overall System Efficiency while Reducing Size
    • Maintains Regulation without Dropout unlike Traditional Bucks
    • Glitchless Buck-Boost Operation
  • Compact, High-Efficiency Power Solution
    • Three Independent Channels from SIMO Regulator
    • 2.7V to 5.5V Input Voltage Range from Single Cell Li-Ion
    • 0.8V to 5.25V Output Voltage Range (Table 1)
    • Flexible Power Sequencing
    • On-Key Input for Hardware Enable
    • Reset Output
  • Small Size
    • 2.75mm x 2.15mm (0.7mm max height) WLP
    • 30-Bump, 0.4mm Pitch, 6 x 5 Array
    • 15.2mm2 Total Solution Size
Additional Details
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The MAX77680/MAX77681 is a 3-channel single-inductor multiple-output (SIMO) buck-boost regulator that regulates three independent rails using only 3µA of quiescent current (IQ). The SIMO improves battery life by replacing inefficient LDOs while being competitive in efficiency to traditional single-output bucks.

The SIMO operates on a input supply between 2.7V and 5.5V. The outputs are independently programmable between 0.8V and 5.25V depending on ordering option. Each output is a buck-boost with glitchless transition between buck and boost operation. The SIMO can support >300mA loads (1.8VOUT, 3.7VIN).

The device integrates a flexible power sequencer (FPS) to control power-up/down order of each output. The default output voltages and sequence can be programmed at the factory. An I2C serial interface is used to further configure the device.

The MAX77680/MAX77681 is available in a 30-bump wafer-level package (WLP). Total solution size is only 15.5mm2. For a similar product with an LDO and battery charger, refer to the MAX77650 data sheet.

Applications

  • Action Cameras, Wearable/Body Cameras
  • Hearables: Bluetooth Headphones and Earbuds
  • Low-Power Internet of Things (IoT) Gadgets
  • Wearables: Fitness, Health, and Activity Monitors
Part Models 2
1ku List Price Starting From $2.01

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX77681AEWV+
  • HTML
  • HTML
MAX77681AEWV+T
  • HTML
  • HTML
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

reference details image

MAX77680EVKIT

Evaluation Kit for the MAX77680/MAX77681

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MAX77680EVKIT

Evaluation Kit for the MAX77680/MAX77681

Evaluation Kit for the MAX77680/MAX77681

Features and Benefits

  • Easy to Use
    • GUI Drives I2C Interface
    • Fully Assembled and Tested
  • Emulates System Loading
    • On-Board Electronic Load for SIMO Buck-Boost Outputs
    • Electronic Load has Steady-State, Transient, and Random Modes
  • Evaluates Both Push-Button and Slider-Switch On-Key Options

Product Detail

The MAX77680/MAX77681 evaluation kit (EV kit) is a fully assembled and tested printed circuit board (PCB) that demonstrates the MAX77680/MAX77681. The EV kit allows for easy evaluation of the MAX77680/MAX77681 resources, including the SIMO and I2C interface.

Windows®-based software provides a user-friendly graphical interface as well as a detailed register-based interface to exercise the features of the MAX77680/MAX77681.

Applications

  • Action Cameras, Wearable/Body Cameras
  • Hearables: Bluetooth Headphones and Earbuds
  • Low-Power Internet of Things (IoT) Gadgets
  • Wearables: Fitness, Health, and Activity Monitors
reference details image

MAX77681EVKIT

Evaluation Kit for the MAX77680/MAX77681

zoom

MAX77681EVKIT

Evaluation Kit for the MAX77680/MAX77681

Evaluation Kit for the MAX77680/MAX77681

Features and Benefits

  • Easy to Use
    • GUI Drives I2C Interface
    • Fully Assembled and Tested
  • Emulates System Loading
    • On-Board Electronic Load for SIMO Buck-Boost Outputs
    • Electronic Load has Steady-State, Transient, and Random Modes
  • Evaluates Both Push-Button and Slider-Switch On-Key Options

Product Detail

The MAX77680/MAX77681 evaluation kit (EV kit) is a fully assembled and tested printed circuit board (PCB) that demonstrates the MAX77680/MAX77681. The EV kit allows for easy evaluation of the MAX77680/MAX77681 resources, including the SIMO and I2C interface.

Windows®-based software provides a user-friendly graphical interface as well as a detailed register-based interface to exercise the features of the MAX77680/MAX77681.

Applications

  • Action Cameras, Wearable/Body Cameras
  • Hearables: Bluetooth Headphones and Earbuds
  • Low-Power Internet of Things (IoT) Gadgets
  • Wearables: Fitness, Health, and Activity Monitors

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