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Low-power PMICs provide optimized power management for space-constrained applications such as wearables, hearables, sensors, and IoT devices. Low operating current, high-efficiency power conversion, and compact form factors are critical for devices that run primarily on small batteries.

PMICs based on the single-inductor, multiple-output (SIMO) architecture use a single inductor as the energy-storage element for multiple, independent DC outputs. The use of fewer inductors can shrink power supply size as much as 50%. In addition, low quiescent current helps to extend the battery life of your space-constrained designs.

Wearable PMICs offer regulators with single-inductor topologies which maximize efficiency. Multiple ultra-low quiescent current regulators with optimal efficiency minimize overall power consumption and extend battery life. By integrating efficient regulation with battery charging, smart power control, and power-optimized peripherals, wearable PMICS provide many options to create space-optimized solutions for always-on battery-operated devices such as fitness monitors, hearables, smart watches, IoT, and wearable clinical devices.

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Benefits of SIMO Architecture
2:07 September 30, 2020

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Featured Products

MAX25520 Automotive 2-Channel TFT-LCD Power Supply

The MAX25520 is a dual-output power IC that provides symmetrical or asymmetrical positive and ne...
  • High Integration
    • Synchronous Boost Provides Positive Output at upto 10.5V/200mA (+12V for MAX25520ATEC)
    • Inverter Output Provides up to -10.5V/-200mA (-12V for MAX25520ATEC)
  • Low EMI
    • 420kHz/2.1MHz Switching Frequency
    • Spread Spectrum
  • UV Diagnostics on All Outputs
  • Versatile
    • Complete Sequencing Flexibility
    • Compact TQFN Package
    • -40°C to +125°C Operating Temperature Range
  • AEC-Q100 Grade 1
  • MAX25320 ASIL-D Compliant Dual 1A Low-Voltage Buck Converter

    The MAX25320 is a high-efficiency dual switching regulator which delivers up to 1A load current ...
    • High Feature Set in Small Footprint
      • High-Efficiency Dual 1A DC-DC Converters
      • 3.3V Operating Supply Voltage
      • Factory Preset Output Voltage
      • 2.1MHz Switching Frequency
      • Individual Enable Inputs
      • Active-low RESET and active-low INT Open-Drain Outputs
      • Spread-Spectrum Oscillator
      • I2C Interface
      • Peak Current Mode Architecture
      • PWM and SKIP Mode Operation
      • 4mm x 4mm 20-Pin TQFN
    • High-Precision
      • ±1% OV/UV Accuracy
      • ±1% Output Voltage Accuracy
      • Excellent Load Transient Performance
      • MAXQ Power Architecture
    • ASIL-D Compliant
      • Redundant Reference
      • BIST Diagnostics
      • PEC on I2C
      • Programmable OV/UV Thresholds
    • High Efficiency
      • Up to 91% Efficiency 3.3V to 1.8V
      • Up to 85% Efficiency 3.3V to 0.825V
    • -40°C to +125°C Operating Temperature Range
    • AEC-Q100 Qualified

    MAX25320EVSYS Evaluation Kit for the MAX25320

    The MAX25320 evaluation kit (EV kit) is a fully assembled and tested application circuit for the...
    • High-Efficiency, Dual 1A DC-DC Converters
    • 3.0V to 5.5V Operating Supply Voltage
    • Factory-Preset Output Voltage
    • 2.1MHz Switching Frequency
    • Individual Enable Inputs
    • Active-Low RESET and INT outputs
    • Spread-Spectrum Oscillator
    • I2C Interface
    • Peak Current Mode Architecture
    • PWM and SKIP Mode Operation
    • ±1% OV/UV Accuracy
    • ±1% Output Voltage Accuracy
    • Excellent Load Transient Performance
    • MAXQTM Power Architecture
    • ASIL-D Compliant
    • Redundant Reference
    • BIST Diagnostics
    • PEC on I2C
    • Programmable OV/UV Thresholds
    • -40°C to +125°C Operating Temperature Range
    • AEC-Q100 Qualified

    MAX25320EVKIT Evaluation Kit for the MAX25320

    The MAX25320 evaluation kit (EV kit) is a fully assembled and tested application circuit for the...
    • High-Efficiency, Dual 1A DC-DC Converters
    • 3.0V to 5.5V Operating Supply Voltage
    • Factory-Preset Output Voltage
    • 2.1MHz Switching Frequency
    • Individual Enable Inputs
    • Active-Low RESET and INT outputs
    • Spread-Spectrum Oscillator
    • I2C Interface
    • Peak Current Mode Architecture
    • PWM and SKIP Mode Operation
    • ±1% OV/UV Accuracy
    • ±1% Output Voltage Accuracy
    • Excellent Load Transient Performance
    • MAXQTM Power Architecture
    • ASIL-D Compliant
    • Redundant Reference
    • BIST Diagnostics
    • PEC on I2C
    • Programmable OV/UV Thresholds
    • -40°C to +125°C Operating Temperature Range
    • AEC-Q100 Qualified

    MAX77659EVKIT Evaluation Kit for the MAX77659

    The MAX77659 evaluation kit (EV kit) allows for easy experimentation with various MAX77659 featu...
    • Easy to Use
    • GUI Drives I2C Interface
    • GPIO LEDs
    • Assembled and Fully Tested
    • On-Board Electronic Loads
      • Steady-State, Transient, and Random Modes
    • Evaluates Push-Button, Slide-Switch, and Logic Mode On-Key Options

    MAX77659 SIMO PMIC with 300mA Switching Charger

    The MAX77659 provides highly-efficient integrated battery charging and power supply solutions fo...
    • Highly Integrated
      • 3x Output, Single-Inductor Multiple-Output (SIMO) Buck-Boost Regulator
        • Supports Wide Output Voltage Range from 0.5V 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
    • Low Power
      • 0.3μA Shutdown Current
      • 5μA Operating Current (3 SIMO Channels + 1 LDO)
    • Charger Optimized for Small Battery Size
      • Input Operating Voltage from 3.4V to 5.5V
      • 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
      • Thermal Regulation and JEITA Compliance
    • Flexible and Configurable
      • I2C-Compatible Interface and GPIO
      • Factory OTP Options Available
    • Small Size
      • 6.04mm2 Wafer-Level Package (WLP)
      • 30-Bump, 0.4mm Pitch, 6x5 Array

    MAX77643 Ultra Configurable PMIC Featuring 93% Peak Efficiency Single-Inductor, 3-Output Buck-Boost, 1-LDO for Long Battery Life

    The MAX77642/MAX77643 provide power supply solutions for low-power applications where size and e...
    • Highly Integrated
      • 3x Output, Single-Inductor Multiple-Output (SIMO) Buck-Boost Regulator
        • Supports Wide Output Voltage Range from 0.5V to 5.5V for all SIMO Channels
      • 1x 150mA LDO
        • 100mA in LSW mode
      • 2x GPIOs (MAX77643)
      • Watchdog Timer (MAX77643)
    • Ultra Low-Power SIMO​
      • 5μA Operating Current (3x SIMO Channels + 1x LDOs)
      • 1μA Operating Current per SIMO Channel
      • 0.3μA Shutdown Current
      • 93% Peak Efficiency in Boost-Only Mode
      • 91% Peak Efficiency in Buck-Only Mode
      • Less Than 20mVpp Output Ripple at VOUT = 1.8V
      • Automatic Low-Power Mode to Normal-Power Mode Transition
    • Flexible and Configurable
      • Ultra-Configurable Resistor Programmable Output Voltages (MAX77642)
      • I2C-Programmable Output Voltages (MAX77643)
    • Small Size
      • 4.24mm2 Wafer-Level Package (WLP)
      • 25-Bump, 0.4mm Pitch, 5 x 5 Array

    MAX77642 Ultra Configurable PMIC Featuring 93% Peak Efficiency Single-Inductor, 3-Output Buck-Boost, 1-LDO for Long Battery Life

    The MAX77642/MAX77643 provide power supply solutions for low-power applications where size and e...
    • Highly Integrated
      • 3x Output, Single-Inductor Multiple-Output (SIMO) Buck-Boost Regulator
        • Supports Wide Output Voltage Range from 0.5V to 5.5V for all SIMO Channels
      • 1x 150mA LDO
        • 100mA in LSW mode
      • 2x GPIOs (MAX77643)
      • Watchdog Timer (MAX77643)
    • Ultra Low-Power SIMO​
      • 5μA Operating Current (3x SIMO Channels + 1x LDOs)
      • 1μA Operating Current per SIMO Channel
      • 0.3μA Shutdown Current
      • 93% Peak Efficiency in Boost-Only Mode
      • 91% Peak Efficiency in Buck-Only Mode
      • Less Than 20mVpp Output Ripple at VOUT = 1.8V
      • Automatic Low-Power Mode to Normal-Power Mode Transition
    • Flexible and Configurable
      • Ultra-Configurable Resistor Programmable Output Voltages (MAX77642)
      • I2C-Programmable Output Voltages (MAX77643)
    • Small Size
      • 4.24mm2 Wafer-Level Package (WLP)
      • 25-Bump, 0.4mm Pitch, 5 x 5 Array

    MAX77643EVKIT Evaluation Kit for the MAX77643

    The MAX77643 evaluation kit (EV kit) allows for easy experimentation with various MAX77643 featu...
    • Easy to use
    • GUI-Driven I2C Interface
    • GPIO LEDs
    • Assembled and Fully Tested
    • On-Board Electronic Loads
      • Steady-State, Transient, and Random Modes
    • Evaluation of Push-Button and Slide-Switch On-Key Options

    MAX20429 Dual 6A High-Efficiency Low Voltage Buck Converter

    The MAX20429 is a high-efficiency dual switching regulator that delivers up to 6A (peak) load cu...
    • High-Feature Set in an Ultra-Small Footprint
      • High-Efficiency DC-DC Converter
      • Two Independent Outputs, up to 6A per Output
      • 3.0V to 5.5V Operating Supply Voltage
      • Resistor-Adjustable Output Voltage
      • Optional Factory-Preset Output Voltage
      • 2.1MHz/3.2MHz Options
      • Enable Input
      • Individual Active-Low RESET Outputs
      • Spread-Spectrum Option
      • Peak Current-Mode Architecture
      • 3mm x 3.5mm FCQFN
    • High-Precision
      • 108/92% OV/UV Monitor
      • ±3% OV/UV Accuracy
      • ±1% Output Voltage Accuracy
      • Excellent Load-Transient Performance
      • PWM and SKIP Mode Operation
      • MAXQTM Power Architecture
    • High Efficiency
      • Up to 96% Efficiency 5V to 3.3V
      • Up to 90% Efficiency 5V to 1V
    • -40°C to +125°C Operating Temperature Range
    • AEC-Q100 Qualified