MAX20345

具有超低IQ电压调节器、升/降压调节器(用于光学检测)和充电器(用于小型锂离子系统)的PMIC

经过优化的电源管理,支持可穿戴和IoT等7×24小时监测系统


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说明

MAX20345为具有超低IQ电压调节器的电源管理方案,是低功耗可穿戴应用的理想选择。器件包括一个线性电池充电器,带有智能电源选择器和多种经过功率优化的外设。器件具有3个降压调节器、3个低压差(LDO)线性调节器和1个升降/压调节器,提供高达7路调节电压,每路电压均具有超低静态电流。2个负载开关允许断开系统外设,最大程度降低系统的总静态负载。MAX20345允许系统设计师最大程度降低7×24小时工作设备的功耗以及延长电池寿命,例如可穿戴市场的产品。

3个同步、高效buck调节器采用脉冲频率调制(PFM)控制方法,有效提高轻载操作期间的效率。这些调节器的输出电压可通过I2C编程,低至0.7V。此外,buck调节器支持动态电压调节(DVS),允许系统设计师在使用能够利用DVS优势的器件时,进一步改进系统功耗。

3个LDO调节器中的每路输出电压均可通过I2C编程。为进一步增加灵活性,每个LDO均可配置为负载开关,可用于断开系统外设的静态负载。

对于要求电压高于和/或低于电池电压的系统外设,集成升/降压转换器为其提供了便利的供电途径,且优化用于光学检测系统,例如光学心率(OHR)/PPG和SpO2测量。升/降压调节器的输出噪声达到了最小,对此类系统中敏感测量的影响降至最低。增加DVS可进一步节省相应测量条件下的功耗。

MAX20345也具有可编程电源控制器,允许器件配置用于要求器件处于真关断或常电工作状态的应用。控制器提供延迟复位信号和电压排序。MAX20345采用56焊球、0.4mm焊距、3.37mm x 3.05mm晶圆级封装(WLP)。

MAX20345: Typical Application Circuits MAX20345: Typical Application Circuits 放大+

关键特性

  • 延长电池两次充电之间的使用时间
    • 3个低IQ降压调节器(IQ = 0.9μA,典型值)
      • 220mA输出电流
      • 通过灵活调整开关频率抑制噪声
      • Buck1:0.700V至1.330V输出电压,10mV步长
      • Buck2:0.700V至2.275V输出电压,25mV步长
      • Buck3:0.700V至3.850V输出电压,50mV步长
    • LDO1 (IQ = 0.55µA,典型值)
      • 100mA输出
      • 2.7V至5.5V输入电压范围
      • 0.8V至3.6V输出电压,100mV步长
    • LDO2 (IQ = 1µA,典型值)
      • 100mA输出
      • 1.71V至5.50V输入电压范围
      • 0.9V至4.0V输出电压,100mV步长
    • LDO3 (IQ = 1µA,典型值)
      • 50mA输出
      • 1.00V至2.00V输入电压范围
      • 0.50V至1.95V输出电压,25mV
    • 2个负载开关
      • 0.65V至5.50V输入电压范围
      • 1Ω RON @ SYS = 3.0V
    • 低IQ升/降压调节器(IQ = 2µA,典型值)
      • 1.5W输出能力
      • 2.6V至5.5V输出电压,50mV步长
  • 易于实现的Li+电池充电
    • 线性锂离子电池充电器
      • 5mA至500mA充电电流
      • +28V / -5.5V容限输入
      • 步进充电(见步进充电部分)
    • 热敏电阻监测器
    • 智能电源选择器
  • 优化系统控制
    • 上电/复位控制器
    • 按键监测器
    • 工厂运输模式
    • 系统接口
      • 带有可编程分压器的监测器多路复用器,用于监测系统电压和充电电流

应用

  • IoT
  • 可穿戴设备

MAX20345EVKIT: MAX20345评估板

技术资料

应用笔记 7035 Choose the Proper PMIC to Boost Your Optical Sensor SNR

质量和环境数据

申请可靠性报告: MAX20345 
无铅封装的锡(Sn)晶须报告

CAD Symbols and Footprints

  • MAX20345AEWN+
  • MAX20345AEWN+T
  • MAX20345EWN+
  • MAX20345EWN+T
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

    质量管理体系 >
    环境管理体系 >

     
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    相关资料


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    MAX38909
    4A/2A High-Performance LDO Linear Regulators

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    MAX20333A
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    MAX20333B
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    MAX20333
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    MAX20333C
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    MAX20333D
    Adjustable Current-Limit Switch with Low Power Mode

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    MAX20333F
    Adjustable Current-Limit Switch with Low Power Mode

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    MAX20333I
    Adjustable Current-Limit Switch with Low Power Mode

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    MAX20333G
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    MAX20333H
    Adjustable Current-Limit Switch with Low Power Mode

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    MAX20333J
    Adjustable Current-Limit Switch with Low Power Mode

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    MAX20006E
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    MAX20011
    Automotive Single 8A/12A Step-Down Converter with High Efficiency

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    MAX77654
    Ultra-Low Power PMIC Featuring Single-Inductor, 3-Output Buck-Boost, 2-LDOs, Power-Path Charger for Small Li+, and Ship Mode

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    MAX16136
    High-Precision Supervisory with Window Watchdog and Overvoltage Indicator

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    MAX16160
    High-Accuracy 4-Channel, Any-Input Supervisory Circuits

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    MAX15158Z
    High-Voltage Multiphase Boost Controller

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    MAX20079
    Automotive 36V 3.5A Buck Converter with 3.5μA IQ

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    MAX20026, MAX20026S
    Automotive Quad, Low-Voltage Step-Down DC-DC Converters with Low-Noise LDO

    • High-Integration Shrinks Solution Size
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    MAX20026S
    Automotive Quad, Low-Voltage Step-Down DC-DC Converters with Low-Noise LDO

    • High-Integration Shrinks Solution Size
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    MAX20801
    MPP Tracking DC-DC Converter

    • Performs MPPT on 20-24 Series Connected PV Cells
    • Fast MPPT Reacts Quickly to Changing Conditions
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    MAX20800
    MPP Tracking DC-DC Converter

    • Performs MPPT on 20-24 Series Connected PV Cells
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    • Integrated Voltage-Limiting Clamps Output Voltage

    MAX5992A
    Multisource, High-Power, High-Performance Powered Device Controllers

    • IEEE 802.3af/at Compliant
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    MAX5992B
    Multisource, High-Power, High-Performance Powered Device Controllers

    • IEEE 802.3af/at Compliant
    • UPoE Compatible
    • High-Power 2x2P/Multi-PD Synchronization/Multi-PD Redundancy

    MAX20059
    72V, 1A, Automotive Synchronous Step-Down DC-DC Converter

    • Synchronous DC-DC Converters with Integrated FETs
    • Flexibility
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    MAX20058
    60V, 1A, Automotive Synchronous Step-Down DC-DC Converter

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    • Flexibility
    • Active-Low RESET Output and EN Input (26V max) Simplify Power Sequencing

    MAXM15067
    4.5V to 60V, 300mA Step-Down uSLIC Power Module

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    • High Efficiency
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    MAXM15065
    4.5V to 60V, 300mA Step-Down uSLIC Power Module

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    • High Efficiency
    • Flexible Design

    MAXM15066
    4.5V to 60V, 300mA Step-Down uSLIC Power Module

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    • High Efficiency
    • Flexible Design

    MAXM17904
    4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

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    • High Efficiency
    • Flexible Design

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    4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

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    • High Efficiency
    • Flexible Design

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    4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAX25600
    同步、高压、4开关、升/降压LED控制器

    • 支持汽车应用:AEC-Q100认证
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    MAX20048
    Automotive 40V, 55µA IQ, 2.2MHz, H-Bridge Buck-Boost Controller

    • Meets Stringent Automotive Quality and Reliability Requirements
    • Efficient Solution in a Small Solutions Size
    • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements

    MAX20010C
    Automotive Single 6A Step-Down Converters

    • Fully Integrated, Synchronous 6A DC-DC Converter Enables Small Solution Size
    • High-Precision Voltage Regulator for Applications Processors
    • Low-Noise Feature Reduces EMI

    MAX20010D
    Automotive Single 6A Step-Down Converters

    • Fully Integrated, Synchronous 6A DC-DC Converter Enables Small Solution Size
    • High-Precision Voltage Regulator for Applications Processors
    • Low-Noise Feature Reduces EMI

    MAX17301
    单节电池ModelGauge m5 EZ电量计,集成保护器和SHA-256安全认证

    • 电池健康 + 可编程安全/保护
    • 非易失存储器,用于独立操作
    • 低静态电流

    MAX17302
    单节电池ModelGauge m5 EZ电量计,集成保护器和SHA-256安全认证

    • 电池健康 + 可编程安全/保护
    • 非易失存储器,用于独立操作
    • 低静态电流

    MAX17312
    单节电池ModelGauge m5 EZ电量计,集成保护器和SHA-256安全认证

    • 电池健康 + 可编程安全/保护
    • 非易失存储器,用于独立操作
    • 低静态电流

    MAX17311
    单节电池ModelGauge m5 EZ电量计,集成保护器和SHA-256安全认证

    • 电池健康 + 可编程安全/保护
    • 非易失存储器,用于独立操作
    • 低静态电流

    MAX17303
    单节电池ModelGauge m5 EZ电量计,集成保护器和SHA-256安全认证

    • 电池健康 + 可编程安全/保护
    • 非易失存储器,用于独立操作
    • 低静态电流

    MAX17313
    单节电池ModelGauge m5 EZ电量计,集成保护器和SHA-256安全认证

    • 电池健康 + 可编程安全/保护
    • 非易失存储器,用于独立操作
    • 低静态电流

    MAX20039
    Automotive, 2V to 36V, 2.2MHz, 0.6A/1.2A Buck-Boost Converters with Integrated H-Bridge Architecture

    • Meets Stringent Automotive Quality and Reliability Requirements
    • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements (B and D version only)
    • High Switching Frequency Allows Use of Small External Components

    MAX20040
    Automotive, 2V to 36V, 2.2MHz, 0.6A/1.2A Buck-Boost Converters with Integrated H-Bridge Architecture

    • Meets Stringent Automotive Quality and Reliability Requirements
    • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements (B and D version only)
    • High Switching Frequency Allows Use of Small External Components

    MAX20029B
    Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

    • Quad Step-Down DC-DC Converters with Integrated FETs
    • Operate from 3.0V to 5.5V Supply Voltage
    • 1.0V to 4.0V Fixed or Adjustable Output Voltage

    MAX20029C
    Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

    • Quad Step-Down DC-DC Converters with Integrated FETs
    • Operate from 3.0V to 5.5V Supply Voltage
    • 1.0V to 4.0V Fixed or Adjustable Output Voltage

    MAX20029, MAX20029B, MAX20029C
    Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

    • Quad Step-Down DC-DC Converters with Integrated FETs
    • Operate from 3.0V to 5.5V Supply Voltage
    • 1.0V to 4.0V Fixed or Adjustable Output Voltage

    MAX77827
    5.5V输入、1.8A/3.1A开关升/降压转换器,6μA IQ

    • 1.8V至5.5V输入电压范围
    • 2.3V至5.3V单电阻可调节输出电压
    • 1.6A最大输出电流(3.1A ILIM选项,降压模式)

    MAX17823H
    12-Channel, High-Voltage Data-Acquisition Systems

    • AEC-Q100 Grade 2 Temperature Range
    • Operating Voltage from 9V to 65V
    • Ultra-Low Power Operation

    MAX25615
    7A Sink, 3A Source, 12ns, SOT23 MOSFET Drivers

    • Automotive Ready: AEC-Q100 Qualified
    • Independent Source and Sink Outputs
    • +4V to +15.5V Single Power-Supply Range

    MAX25615EVKIT
    Evaluation Kit for the MAX25615

    • +4V to +16V Single Power-Supply Range
    • 7A Peak Sink Current
    • 3A Peak Source Current

    MAX20334
    具有过压和浪涌保护的双路SPDT数据线路开关

    • 无失真、高速信号
    • 灵活的系统设计
    • 可靠性和安全性

    MAX25611C
    汽车应用高电压、HB-LED控制器

    • 支持汽车应用:AEC-Q100认证
    • 高度集成最大程度降低BOM,用于高亮度LED驱动器
    • 灵活的应用配置

    MAX25611A
    汽车应用高电压、HB-LED控制器

    • 支持汽车应用:AEC-Q100认证
    • 高度集成最大程度降低BOM,用于高亮度LED驱动器
    • 灵活的应用配置

    MAX25611B
    汽车应用高电压、HB-LED控制器

    • 支持汽车应用:AEC-Q100认证
    • 高度集成最大程度降低BOM,用于高亮度LED驱动器
    • 灵活的应用配置

    MAX25611D
    汽车应用高电压、HB-LED控制器

    • 支持汽车应用:AEC-Q100认证
    • 高度集成最大程度降低BOM,用于高亮度LED驱动器
    • 灵活的应用配置

    MAX25610A
    同步、降压和升/降压LED驱动器/DC-DC转换器

    • 支持汽车应用:AEC-Q100认证
    • 高度集成最大程度减少BOM,节省空间和成本
    • 较宽调光比支持高对比度

    MAX25610B
    同步、降压和升/降压LED驱动器/DC-DC转换器

    • 支持汽车应用:AEC-Q100认证
    • 高度集成最大程度减少BOM,节省空间和成本
    • 较宽调光比支持高对比度

    MAX16152
    nanoPower Supervisor and Watchdog Timer

    • 400nA (typ) Supply Current
    • 1.2V to 5.5V Operating Supply Range
    • Monitors Supply Voltage and Provides System Reset Signal

    MAX16153
    nanoPower Supervisor and Watchdog Timer

    • 400nA (typ) Supply Current
    • 1.2V to 5.5V Operating Supply Range
    • Monitors Supply Voltage and Provides System Reset Signal

    MAX16154
    nanoPower Supervisor and Watchdog Timer

    • 400nA (typ) Supply Current
    • 1.2V to 5.5V Operating Supply Range
    • Monitors Supply Voltage and Provides System Reset Signal

    MAX16155
    nanoPower Supervisor and Watchdog Timer

    • 400nA (typ) Supply Current
    • 1.2V to 5.5V Operating Supply Range
    • Monitors Supply Voltage and Provides System Reset Signal

    MAX17613A
    4.5V to 60V, 3A Current-Limiter with OV, UV, and Reverse Protection

    • Robust Protection Reduces System Downtime
    • Flexible Design Options Enable Reuse and Less Requalification
    • Saves Board Space and Reduces External BOM Count

    MAX17613B
    4.5V to 60V, 3A Current-Limiter with OV, UV, and Reverse Protection

    • Robust Protection Reduces System Downtime
    • Flexible Design Options Enable Reuse and Less Requalification
    • Saves Board Space and Reduces External BOM Count

    MAX17613C
    4.5V to 60V, 3A Current-Limiter with OV, UV, and Reverse Protection

    • Robust Protection Reduces System Downtime
    • Flexible Design Options Enable Reuse and Less Requalification
    • Saves Board Space and Reduces External BOM Count

    MAX21610
    Automotive 16-Channel 100mA Local Dimming Backlight Driver with SPI Interface

    • High Integration
    • Robust and Low EMI
    • Relative Dimming Ratio Between Strings Up to 32768:1

    MAX17687
    4.5V至60V输入、超小尺寸、高效、Iso-Buck DC-DC转换器

    • 无需外部元件,降低总体成本
    • 支持各种隔离DC-DC应用
    • 降低功耗

    MAX17686
    4.5V至60V输入、高效、Iso-Buck DC-DC转换器

    • 减少外部元件,降低总体成本
    • 支持多种隔离DC-DC应用
    • 降低功耗

    MAX20480
    汽车应用ASIL-D 7通道电源系统检测器

    • 小方案尺寸
    • 高精度
    • 高度集成

    MAXM15465
    4.5V至42V、300mA、喜马拉雅uSLIC降压型电源模块

    • 容易使用
    • 高效
    • 灵活的设计

    MAXM15466
    4.5V至42V、300mA、喜马拉雅uSLIC降压型电源模块

    • 容易使用
    • 高效
    • 灵活的设计

    MAXM15467
    4.5V至42V、300mA、喜马拉雅uSLIC降压型电源模块

    • 容易使用
    • 高效
    • 灵活的设计

    类型 编号 标题
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