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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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Featured Products

MAX20419 High-Efficiency, 3-Output, Low-Voltage DC-DC Converter

The MAX20419 is a high-efficiency, 3-output, low-voltage DC-DC converter IC. OUT1 boosts the inp...
  • Multiple Functions for Small Size
    • Synchronous 750mA Boost Converter
    • Fixed at 5V Output
    • Dual Synchronous Buck Converters Up to 3.6A
      • Factory-Configurable from 0.8V to 3.8V in 25mV Steps
    • Programmable Windowed Watchdog
    • 3.0V to 5.5V Operating Supply Voltage
    • 2.2MHz Operation
    • Individual Active-Low RESET_ Outputs
    • High-Precision Performance
      • ±1.9% Output-Voltage Accuracy (OUT1) and
      • ±1.4% Output-Voltage Accuracy (OUT2, OUT3)
      • ±1.3% OV/UV Monitoring (OUT1–OUT3, PV)
    • Excellent Load-Transient Performance
  • Diagnostics and Redundant Circuits
    • ASIL-C Compliant
    • Redundant Reference
    • Fail Safe on Open Pins
    • Shorted Pin Detection Active Low-RESET1–RESET3
    • Input Overvoltage Detection
  • Robust for the Automotive Environment
    • Current Mode, Forced-PWM and Skip Operation
    • Overtemperature and Short-Circuit Protection
    • 24-Pin (4mm x 4mm) TQFN with Exposed Pad
    • -40 °C to +125 °C Automotive Temperature Range

MAX77642EVKIT Evaluation Kit for the MAX77642

The MAX77642 evaluation kit (EV kit) allows for easy experimentation with various MAX77642 featu...
  • Easy to Use
  • GUI-Driven I2C Interface
  • Assembled and Fully Tested
  • On-Board Electronic Loads
    • Steady-State, Transient, and Random Modes
  • Demonstration of End-to-End Analog Multiplexer implementation
  • On-Board ADC

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

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

MAX25249 Quad Output Mini PMIC for Automotive Camera Applications

The MAX25249/MAX25249B are high-efficiency, four-output PMICs that integrate three DC-DC convert...
  • Multiple Functions for Small Size
    • 1A Synchronous High-Voltage Buck Converter
      • Input Voltage Range 4.5V to 36V
      • 3V to 4V, and 5V Output Voltage in 50mV steps
    • Two Synchronous Low-Voltage Buck Converters
      • OUT2 and OUT3 Provide up to 1.2A
      • 0.8V to 3.9875V in 12.5mV steps
    • LDO for Camera Sensor; 50dB at 1kHz.
    • 2.2MHz Operation
    • Active-Low RESET Output – Push-Pull or Open-Drain
  • High-Precision
    • ±1.5% Output Voltage Accuracy
    • ±1.3% OV/UV Monitoring Accuracy
  • Diagnostics and Features
    • ASIL-B Compliant
    • Redundant Reference
  • Robust for the Automotive Environment
    • Current-Mode, Forced-PWM Operation
    • Overtemperature and Short-Circuit Protection
    • 3.5mm x 3.5mm 20-Pin TQFN
    • -40°C to +125°C Grade 1 Automotive Temperature Range
    • AEC-Q100 Qualified
MAX20360 PMIC with Ultra-Low I<sub>Q</sub> Regulators, Charger, Fuel Gauge, and Haptic Driver for Small Li+ System

MAX20360 PMIC with Ultra-Low IQ Regulators, Charger, Fuel Gauge, and Haptic Driver for Small Li+ System

The MAX20360 is a highly integrated and programmable power management solution designed for ultr...
  • Extend Battery-Use Time Between Battery Charging
    • 2 x Micro-IQ, 400mA Buck Regulators (330nA IQ typ each)
      • 0.550V to 1.180V in 10mV Steps
      • 0.550V to 2.125V in 25mV Steps
      • 0.550V to 3.700V in 50mV Steps
    • Micro-IQ, 600mA Buck Regulator (330nA IQ typ)
      • 0.550V to 1.180V in 10mV Steps
      • 0.550V to 2.125V in 25mV Steps
      • 0.550V to 3.700V in 50mV Steps
    • Micro-IQ LV LDO/Load Switch (1μA IQ typ)
      • 1.0V to 2.0V Input Voltage
      • 50mA Output
      • 0.5V to 1.95V Output, 25mV Steps
    • Micro-IQ LDO/Load Switch (1μA IQ typ)
      • 1.71V to 5.5V Input Voltage
      • 100mA Output
      • 0.9V to 4V, 100mV Steps
    • Micro-IQ Buck-Boost Regulator (2μA IQ typ)
      • 1.5W Output
      • 2.6V to 5V in 50mV Steps
  • Easy-to-Implement Li+ Battery Charging
    • Wide Fast Charge Current Range: 5mA to 500mA
    • 28V/-5.5V Tolerant Input
    • Programmable JEITA Current/Voltage Profiles
  • Minimize Solution Footprint through High Integration
    • 3.3V or 5.0V Safe Output LDO
      • 15mA When CHGIN Present
    • ERM/LRA Haptic Driver
      • Automatic Braking (LRA Only)
      • Automatic Resonance Tracking (LRA Only)
  • Supports a Wide Variety of Display Options
    • Micro-IQ Boost Regulator (2.4μA IQ typ)
      • 300mW Output
      • 5V to 20V in 250mV Steps
    • 3-Channel Current Sinks
      • 20V Tolerant
      • Programmable from 0.6mA to 30mA
    • Optimize System Control
      • Programmable Push-Button Controller
      • Programmable Supply Sequencing
      • Factory Shelf Mode
      • On-Chip Voltage/Charge Current Monitor Mux and Analog-to-Digital Converter (ADC)

MAX20360EVKIT Evaluation Kit for the MAX20360

The MAX20360 evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstr...
  • USB Power Option
  • Flexible Configuration
  • On-Board LED Current Sink and Battery Simulation
  • Sense Test Point for Output-Voltage Measurement
  • Filter Test Point for Haptic-Waveform Measurement
  • Windows® 8/Windows 10-Compatible GUI Software
  • Fully Assembled and Tested
MAX77655 Low I<sub>Q</sub> SIMO PMIC with 4-Outputs Delivering up to 700mA Total Output Current

MAX77655 Low IQ SIMO PMIC with 4-Outputs Delivering up to 700mA Total Output Current

The MAX77655 provides a highly-integrated power supply solution for low-power applications where...
  • Highly Integrated
    • 4x Output, Single-Inductor Multiple-Output (SIMO) Buck-Boost Regulator
      • Support Output Voltage Range from 0.5V to 4.0V for All SIMO Channels
      • 6.9μA Typical IQ with Two Outputs Enabled in Low-Power Mode
      • > 700mA Output Current at 3.7VIN and 1.8VOUT
      • Up to 90% Efficiency at 3.7VIN and 1.8VOUT
  • Flexible and Configurable
    • I2C Compatible Interface
    • Factory OTP Options Available
  • Small Size
    • 3.95mm2 Wafer-Level Package (WLP)
    • 16-Bump, 0.5mm-Pitch, 4 x 4 Array
MAX77655EVKIT Evaluation Kit for the <a href="/en/products/MMAX77655">MAX77655</a>

MAX77655EVKIT Evaluation Kit for the MAX77655

The MAX77655 evaluation kit (EV kit) allows for easy experimentation with the MAX77655 CCM singl...
  • Easy to Use
  • GUI-Driven I2C Interface
  • Assembled and Fully Tested
  • On-Board Electronic Loads
  • Electronic Loads with Steady-State, Transient, and Random Modes
  • On-Board ADC
  • Evaluation of Multiple On-Key Options
  • Wide Inductor Pads for Wide Range of Case Codes