Volver a Analog Devices Inc.

Analog Devices / Maxim Integrated MAX14690 Wearable Charge-Management Solution

Analog Devices MAX14690 Wearable Charge-Management Solution is ideal for low-power wearable applications. These devices include a linear battery charger with a smart power selector and several power-optimized peripherals. The MAX14690 features two ultra-low-power buck regulators with a typical quiescent current of 900nA and three ultra-low-power low-dropout (LDO) linear regulators, with a typical quiescent current of 600nA.

The Analog Devices MAX14690 can provide up to five regulated voltages, each with an ultra-low quiescent current. Ultra-low quiescent current is critical to battery life for the unique power profile 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.

Features

  • Extend system use time between battery charging
    • Dual ultra-low-IQ 200mA buck regulators
      • Output programmable from 0.8V to 1.8V and 1.5V to 3.3V
      • 0.9μA (typ.) quiescent current
      • Automatic burst or forced-PWM modes
  • Three ultra-low-IQ 100mA LDOs
    • Output programmable from 0.8V to 3.6V
    • 0.6μA (typ.) quiescent current
    • 2.7V to 5.5V input with a 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

Applications

  • Wearable electronics
  • Fitness monitors
  • Portable medical devices

MAX14690 Block Diagram

Block Diagram - Analog Devices / Maxim Integrated MAX14690 Wearable Charge-Management Solution

Associated Tool

Analog Devices / Maxim Integrated MAX14690EVKIT Evaluation Kit

Fully assembled and tested circuit for evaluating the MAX14690, a wearable charge-management IC.

Learn Moreacerca de Analog Devices / Maxim Integrated MAX14690EVKIT Evaluation Kit View Productsrelacionado con Analog Devices / Maxim Integrated MAX14690EVKIT Evaluation Kit
Publicado: 2017-07-19 | Actualizado: 2023-04-17