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Analog Devices Inc. MAX20353 Wearable Power Management IC

Analog Devices Inc. MAX20353 Wearable Power Management IC (PMIC) is a highly integrated and programmable PMIC designed specifically for ultra-low-power wearable applications. The MAX20353 PMIC is optimized for size and efficiency to enhance the value of the end product by extending the battery life and shrinking the overall solution size. A flexible set of power-optimized voltage regulators, including multiple bucks, boost, buck-boost, and linear regulators, provide a high level of integration and the ability to create a fully optimized power architecture. The quiescent current of each regulator is specifically suited for 1µA (typical) to extend battery life in always-on applications.

The MAX20353 includes a complete battery management solution with a battery seal, charger, power path, and fuel gauge. Both thermal management and input protection are built into the device.

The MAX20353 also includes a factory programmable button controller with multiple inputs that are customizable to fit specific product UX requirements. Three integrated LED current sinks are included for indicator or backlighting functions, and an ERM/LRA driver with automatic resonance tracking is capable of providing sophisticated haptic feedback to the user. This device is configurable through an I2C interface that allows for programming various functions and reading device status, including the ability to read temperature and supply voltages with the integrated ADC.

This MAX20353 PMIC is offered in a 56-bump Wafer-Level Package (WLP) and operates over the -40°C to +85°C extended temperature range.

Features

  • Extend battery use time between battery charging
    • 2x micro-IQ buck regulators [<1µA IQ (typical) each]
      • 350mA output
      • Buck1: 0.7V to 2.275V in 25mV steps
      • Buck2: 0.7V to 3.85V in 50mV steps
    • Micro-IQ LV LDO/load switch [1µA IQ (typical)]
      • 16.0V to 2.0V input voltage
      • 50mA output
      • 5.0V to 1.95V output, 25mV steps
    • Micro-IQ LDO/load switch [1µA IQ (typical)]
      • 71.0V to 5.5V input voltage
      • 100mA output
      • 9V to 4V, 100mV steps
    • Micro-IQ buck-boost regulator [1.3µA IQ (typical)]
      • 250mW output
      • 2.5V to 5.0V in 100mV steps
  • Minimizes solution footprint through high integration
    • Safe output LDO
      • 15mA when CHGIN present
      • 5.0V or 3.0V
    • Haptic driver
      • ERM/LRA driver with quick start and stored pattern RAM
      • Automatic resonance tracking (LRA only)
      • Closed-loop automatic braking (LRA only)
  • Easy-to-implement Li+ battery charging
    • Wide 5mA to 500mA fast charge current range
    • Smart power selector
      • 28.0V/-5.5V tolerant input
      • Programmable JEITA current/voltage profiles
  • Supports a wide variety of display options
    • Micro-IQ boost regulator (2.4µA IQ (typical))
      • 300mW output
      • 5.0V to 20.0V in 250mV step
    • 3-channel current sinks
      • 20V tolerant
      • Programmable from 0.6mA to 30mA
  • Optimized system control
    • Power-on/reset controller
    • Programmable push-button controller
    • Programmable supply sequencing
    • Factory shelf mode
    • On-chip voltage monitor multiplexer and Analog-to-Digital Converter (ADC)
  • Package information
    • WLP-56 package type
    • 3.71mm x 4.21mm package dimensions, 0.5mm pitch

Applications

  • Wearable devices
  • IoT

Charger State Diagram

Block Diagram - Analog Devices Inc. MAX20353 Wearable Power Management IC

Typical Application Circuit

Application Circuit Diagram - Analog Devices Inc. MAX20353 Wearable Power Management IC

Development Tools

Analog Devices Inc. MAX20353EVKIT Evaluation Kit

Fully assembled and tested reference design for evaluating the MAX20353 Wearable PMIC.

Learn Moreacerca de Analog Devices Inc. MAX20353EVKIT Evaluation Kit View Productsrelacionado con Analog Devices Inc. MAX20353EVKIT Evaluation Kit
Publicado: 2020-03-10 | Actualizado: 2024-04-30