MAX20335
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MAX20335

PMIC with Ultra-Low IQ Voltage Regulators and Battery Chargers for Small Lithium Ion Systems

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

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 12
1ku List Price Starting From $1.99
Features
  • Extend System Use Time Between Battery Charging
    • Dual Ultra-Low-IQ 200mA Buck Regulators
      • Output Programmable from 0.7V to 2.275V and 0.7V to 3.85V
      • 0.9µA (typ) Quiescent Current (Buck 1)
      • Optional Fixed Peak-Current Mode to Optimize Ripple Frequency in Noise-Sensitive Applications
    • Three Ultra-Low-IQ 100mA LDOs
    • LDO1
      • Output Programmable from 0.8V to 3.6V
      • 0.6µA (typ) Quiescent Current
      • 2.7V to 5.5V Input with Dedicated Pin
    • LDO2/3
      • Output Programmable from 0.9V to 4V
      • 1µA (typ) Quiescent Current
      • 1.71V to 5.5V Input with Dedicated Pin
  • Easy-to-Implement Li+ Battery Charging
    • Smart Power Selector
    • 28V/-5.5V Tolerant Input
    • Thermistor Monitor
  • Minimize Solution Footprint Through High Integration
    • Provides Five Regulated Voltage Rails
    • Switch Mode Option on Each LDO
  • Optimize System Control
    • Monitors Pushbutton for Ultra-Low Power Mode
    • Power-On Reset Delay and Voltage Sequencing
    • On-Chip Voltage Monitor Multiplexer
Additional Details
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The MAX20335 is a battery-charge-management solution ideal for low-power wearable applications. The device includes a linear battery charger with a smart power selector and several power-optimized peripherals. The MAX20335 features two ultra-low quiescent current buck regulators and three ultra-low quiescent current low-dropout (LDO) linear regulators, providing up to five regulated voltages, each with an ultra-low quiescent current, allows designers to minimize power consumption and extend battery life in 24/7 operation devices, such as those in the wearable market.

The battery charger features a smart power selector that allows operation on a dead battery when connected to a power source. To avoid overloading a power adapter, the input current to the smart power selector is limited based on an I2C register setting. If the charger power source is unable to supply the entire system load, the smart power control circuit supplements the system load with current from the battery. The charger also supports temperature dependent charge currents.

The two synchronous, high-efficiency step-down buck regulators feature a variable frequency mode for increased efficiency during light-load operation. The output voltage of these regulators can be programmed through I2C with the default preconfigured. The buck regulators can support dynamic voltage scaling to further improve system power consumption.

The three configurable LDOs each have a dedicated input pin. Each LDO regulator output voltage can be programmed through I2C with the default preconfigured. The linear regulators can also be configured to operate as power switches that may be used to disconnect the quiescent load of the system peripherals.

The MAX20335 features a programmable power controller that allows the device to be configured for applications that require the device be in a true-off, or always-on, state. The controller also provides a delayed reset signal and voltage sequencing.

The MAX20335 is available in a 36-bump, 0.4mm pitch, 2.72mm x 2.47mm wafer-level package (WLP).

Applications

  • Fitness Monitors
  • Rechargeable IoT devices
  • Wearable Electronics
Part Models 12
1ku List Price Starting From $1.99

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX20335AEWX+
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MAX20335AEWX+T
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MAX20335BEWX+
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MAX20335BEWX+T
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MAX20335DEWX+
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MAX20335DEWX+T
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MAX20335FEWX+
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MAX20335FEWX+T
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MAX20335GEWX+
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MAX20335GEWX+T
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MAX20335JEWX+
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MAX20335JEWX+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 3

reference details image

EV-CATTLETAG-ARDZ

Smart Livestock Tracking and Health Monitoring Sensor

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EV-CATTLETAG-ARDZ

Smart Livestock Tracking and Health Monitoring Sensor

Smart Livestock Tracking and Health Monitoring Sensor

Features and Benefits

  • Monitors the health and vitality of livestock in real-time, enabling farmers to quickly treat animals and prevent the spread of illness or disease.
  • Tracks grazing animals to prevent loss and to identify grazing patterns.
  • Gathers and analyzes historical data to identify trends in cattle health or to track the spread of illness.
  • Monitors readiness to mate or give birth, preventing the loss of new calves and optimizing breeding practices.

Product Detail

The EV-CATTLETAG-ARDZ is an Arduino board with a fully integrated solution for harvesting energy from single-/multi-cell solar sources. The device includes battery chargers for small lithium-ion systems, and a digital temperature sensor for applications such as Wearables and IoT. The board has an on-board MAX20335 BMS device, a MAX30210 temperature sensor, and a buzzer with a vibration motor option.

APPLICATIONS

  • Asset location
  • Asset recovery
  • Asset traceability
  • Inventory management

MAX20335EVKIT

Evaluation Kit for the MAX20335

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MAX20335EVKIT

Evaluation Kit for the MAX20335

Evaluation Kit for the MAX20335

Features and Benefits

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

Product Detail

The MAX20335 evaluation kit (EV kit) is a fully assembled and tested circuit for evaluating the MAX20335 wearable charge-management solution with I2C capability for low-power wearable application. The device includes a linear battery charger, smart power selector, two ultra-low quiescent current buck regulators, and three low-dropout (LDO) linear regulators.

Refer to the MAX20335 IC data sheet for detailed information regarding the operation and features of the devices.

Applications

  • Fitness Monitors
  • Rechargeable IoT devices
  • Wearable Electronics

MAX20335EVSYS

Evaluation Kit for the MAX20335

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MAX20335EVSYS

Evaluation Kit for the MAX20335

Evaluation Kit for the MAX20335

Features and Benefits

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

Product Detail

The MAX20335 evaluation system (EV system) is a fully assembled and tested circuit board that demonstrates the MAX20335 low-power wearable power management integrated circuit (PMIC). The MAX20335 features two bucks, three linear regulators, and a battery charger.

The EV system comes with the MAX20335 board, the MAXPICO2PMB# board, and two USB micro-B cables. The EV system comes with the MAX20335BEWX+ installed. The MAX20335 is configurable through an I2C interface that allows for programming various functions and reading the device status. The EV system GUI application sends commands to the MAXPICO2PMB# adapter board to configure the device.

Applications

  • Fitness Monitors
  • Rechargeable IoT devices
  • Wearable Electronics
Reference Designs

Reference Designs 1

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