MAX20345

RECOMMENDED FOR NEW DESIGNS

PMIC with Ultra-Low IQ Voltage Regulators, Buck-Boost for Optical Sensing and Charger for Small Lithium Ion Systems

Optimized Power Management for 24/7 Monitoring Systems Such as Wearables and IoT

Data Sheet (Rev. 11) Product Selection Table
Part Models
14
1ku List Price
Starting From $4.76
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Part Details

  • Extend Battery-Use Time Between Charging
    • 3 x Low IQ Buck Regulators (IQ = 0.9μA typ)
      • 220mA Output Current
      • Noise Mitigation by Flexible Adjustment of Switching Frequency
      • Buck1: 0.700V to 1.330V Output Voltage in 10mV Steps
      • Buck2: 0.700V to 2.275V Output Voltage in 25mV Steps
      • Buck3: 0.700V to 3.850V Output Voltage in 50mV Steps
    • LDO1 (IQ = 0.55µA typ)
      • 100mA Output
      • 2.7V to 5.5V Input Voltage Range
      • 0.8V to 3.6V Output Voltage in 100mV Steps
    • LDO2 (IQ = 1µA typ)
      • 100mA Output
      • 1.71V to 5.50V Input Voltage Range
      • 0.9V to 4.0V Output Voltage in 100mV Steps
    • LDO3 (IQ = 1µA typ)
      • 50mA Output
      • 1.00V to 2.00V Input Voltage Range
      • 0.50V to 1.95V Output Voltage in 25mV Steps
    • 2 x Load Switches
      • 0.65V to 5.50V Input Voltage Range
      • 1Ω RON at SYS = 3.0V
    • Low IQ Buck-Boost Regulator (IQ = 2µA typ)
      • 1.5W Output Capability
      • 2.6V to 5.5V Output Voltage in 50mV Steps
  • Easy to Implement Li+ Battery Charging
    • Linear Li-Ion Battery Charger
      • 5mA to 500mA Charge current
      • +28V / -5.5V Tolerant Input
      • Step Charging (See the Step Charging Section)
    • Thermistor Monitor
    • Smart Power Selector
  • Optimize System Control
    • Power On/ Reset Controller
    • Push-Button Monitor
    • Factory Shipping Mode
    • System Interface
      • Monitor Multiplexer with Programmable Divider to Monitor System Voltages and Charging Current
MAX20345
PMIC with Ultra-Low IQ Voltage Regulators, Buck-Boost for Optical Sensing and Charger for Small Lithium Ion Systems
MAX20345 Functional Diagram MAX20345 Typical AppIication Circuit MAX20345 Pin Configuration
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Documentation

Data Sheet 1

Technical Articles 1

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Evaluation Kits

eval board
schematic 1
MAX20345EVSYS

Evaluation Kit for the MAX20345

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Features and Benefits

  • USB-Power Option
  • Flexible Configuration
  • On-Board Battery Simulation
  • Sense Test Point for Output-Voltage Measurement
  • Windows® 8/Windows 10-Compatible Graphical User Interface (GUI) Software
  • Fully Assembled and Tested

Product Details

The MAX20345 evaluation system (EV system) is a fully assembled and tested circuit board that demonstrates the MAX20345 ultra low-power wearable power management integrated circuit (PMIC).

The MAX20345 is a battery-charge-management solution ideal for low-power wearable applications. The device includes voltage regulators such as bucks, boost, buckboost, and linear regulators, as well as a battery management solution with battery seal, linear battery charger, and smart power path selector.

The MAX20345 EV system comes with the MAX20345_ SYS_EVKIT_B board, the PICO2PMB# board, and two micro-B cables. The EV system has the MAX20345AEWN+ installed. The device is configurable through an I2C interface that allows for programming various functions and reading the device status. The application sends commands to the MAXPICO2PMB USB-to-I2C adapter board to configure the MAX20345.

Applications

  • IoT
  • Wearable Devices

MAX20345EVKIT

Evaluation Kit for the MAX20345

Buy Now View Details

Features and Benefits

  • RoHS Compliant
  • Proven PCB Layout
  • Fully Assembled and Tested
  • I2C Serial Interface

Product Details

The MAX20345 evaluation kit (EV kit) is a fully assembled and tested circuit for evaluating the MAX20345 wearable charge-management solution with I2C compatibility for low-power wearable applications. The device includes a linear battery charger, smart power selector, three ultralow quiescent current buck regulators, a buck-boost regulator, three low-dropout (LDO) linear regulators, two load switches, and five GPIO pins.

Refer to the full MAX20345 IC datasheet for detailed information regarding the operation and features of the devices.

Applications

  • IoT
  • Wearable Devices
MAX20345EVSYS
Evaluation Kit for the MAX20345
MAX20345EVSYS:Board Photo
MAX20345EVKIT
Evaluation Kit for the MAX20345

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