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Ultra-Low Quiescent Current PMIC with SIMO Buck-Boost for Wearable Applications

Wearable Power Management for Single-Cell Zinc Air, Silver Oxide, and Alkaline Battery Architectures

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主要特征

应用/用途

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主要特征

  • Extend System Battery Use Time
    • Single Inductor, Multiple Output (SIMO) Ultra-Low IQ Buck-Boost Regulator
      • Battery Input Voltage from 0.7V to 2.0V
      • Output Voltage Programmable From 0.9V to 4.05V
      • 250mW Maximum Total Input Power
      • Incremental CAP Quiescent Current 1μA per channel
      • 84% Efficiency for 1.8V, 10mA Output
      • Input Current Limited
    • Dual Micro-IQ 50mA LDO
      • Inputs Supplied by Dual Buck-Boost Outputs
      • Output Programmable from 0.5V to 3.65V
      • Quiescent Current 1.1µA per LDO / 600nA per Load Switch
      • Configurable as Load Switch
  • Extend Product Shelf-Life
    • Battery Seal Mode
      • 10nA Battery Current (typ)
  • Minimize Board Area
    • 1.63mm x 1.63mm WLP
  • Easy-to-Implement System Control
    • Voltage Monitor Multiplexer
      • 1% Accurate Battery Inverter (±10mV at 1.0V)
    • Power Button Monitor
      • Buffered Output
    • Power Sequencing
    • Reset Output
    • I2C Control Interface

应用/用途

  • 便携式医疗设备
  • 可穿戴健身设备
  • 可穿戴医疗设备

描述

The MAX20310 is a compact power management integrated circuit (PMIC) for space-constrained, battery-powered applications where size and efficiency are critical. The device combines two single inductor, multiple output (SIMO) buck-boosted outputs with two LDOs and other system power management features like a push-button monitor and sequencing controller.

The device includes a SIMO buck-boost switching regulator that provides two programmable voltage rails using a single inductor, minimizing solution footprint. The MAX20310 operates with battery voltages down to 0.7V for use with Zinc Air, Silver Oxide, or Alkaline batteries. The architecture allows for output voltages above or below the battery voltage.

Additionally, the MAX20310 has two programmable low-dropout (LDO) linear regulators. The linear regulators can also operate as power switches that can disconnect the quiescent load of system peripherals.

The MAX20310 includes a programmable power controller that allows the device to be configured for use in applications that require a true off state or for always-on applications. This controller provides a delayed reset signal, voltage sequencing, and customized button timing for on/off control and recovery hard reset.

The device also features a multiplexer for monitoring the power inputs and outputs of each function. The MAX20310 is available in a 16-bump 0.4mm pitch 1.63mm x 1.63mm wafer-level package (WLP) and operates over the -40°C to +85°C extended temperature range.

简化框图

Disposable Zinc-Air/Silver-Oxide ECG Patch with SIMO Application Circuit Disposable SIMO Primary Cell ECG Patch Application Circuit Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索技术问题的答案

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Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心