MAX1879

简单、高效率、1节Li+电池脉冲充电器


点击查看特定型号的库存状况。

说明

The MAX1879 single-cell lithium-ion (Li+) battery charger utilizes an efficient pulse-charging architecture to minimize power dissipation in portable devices. This architecture combines the efficiency of switch-mode chargers with the simplicity and low cost of linear chargers. This simple device, in conjunction with a current-limited wall cube and a PMOS transistor, allows safe and fast charging of a single Li+ cell.

The MAX1879 initiates charging in one of three ways: battery insertion, charger power-up, or toggling the THERM pin. Key safety features include continuous voltage and temperature monitoring, a preset charger time-out, and an 8mA precharge current mode to charge near-dead cells. Automatic detection of input power removal shuts down the device, minimizing current drain from the battery. An overall system accuracy of 0.75% ensures that the cell capacity is fully utilized without cycle life degradation.

The MAX1879 is offered in a space-saving 8-pin µMAX® package. An evaluation kit (MAX1879EVKIT) is available to help reduce design time.
MAX1879:典型工作电路 MAX1879:典型工作电路 放大+

关键特性

  • Simple Design Minimizes Heat
  • Low Component Count, No Inductor
  • Battery-Full Indicator
  • 0.75% Accurate Battery Regulation
  • 1.5µA (max) Battery Current Drain with Wall Cube Removed
  • Restart Charging at 4.0V
  • Continuous Overvoltage and Overtemperature Protection
  • Safely Precharges Near-Dead Cells
  • Automatic Power-Down when Power Source is Removed
  • Charges 1 Cell from as Low as 4.5V
  • Pin-Compatible Upgrade to MAX1679

应用

  • 蜂窝电话
  • 消费类音频
  • 无绳电话
  • 数码相机
  • 全球定位系统(GPS)
  • 寻呼机
  • 掌上电脑、手持终端
  • 笔输入掌上电脑、PDA和数字助理
  • 智能电池组/充电器
Part NumberLithium Ion CellsProtected VIN
(V)
Charging VIN
(V)
Charge Rate Set byMax. ICHG
(A)
Charge TerminationCharge RegulationOper. Temp.
(°C)
Package/PinsBudgetary
Price
maxmaxSee Notes
MAX1879 12222External Source2External ControlPulse-40 to +85
UMAX/8
$1.49 @1k
查看所有Battery Chargers (74)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。


MAX1879EVKIT: MAX1879评估板

CAD Symbols and Footprints

  • MAX1879EUA
  • MAX1879EUA+
  • MAX1879EUA+T
  • MAX1879EUA-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 >

     
    Status:
    Package:
    Temperature:

    相关资料


    MAX17312
    1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

    • Battery Health + Programmable Safety/Protection
    • Nonvolatile Memory for Stand-Alone Operation
    • Low Quiescent Current

    MAX17311
    1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

    • Battery Health + Programmable Safety/Protection
    • Nonvolatile Memory for Stand-Alone Operation
    • Low Quiescent Current

    MAX17313
    1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

    • Battery Health + Programmable Safety/Protection
    • Nonvolatile Memory for Stand-Alone Operation
    • Low Quiescent Current

    MAX17301
    1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

    • Battery Health + Programmable Safety/Protection
    • Nonvolatile Memory for Stand-Alone Operation
    • Low Quiescent Current

    MAX17302
    1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

    • Battery Health + Programmable Safety/Protection
    • Nonvolatile Memory for Stand-Alone Operation
    • Low Quiescent Current

    MAX17303
    1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

    • Battery Health + Programmable Safety/Protection
    • Nonvolatile Memory for Stand-Alone Operation
    • Low Quiescent Current

    MAX17823H
    12-Channel, High-Voltage Sensor with Integrated 650mA Cell Balancing and Differential UART for Daisy-Chain Communication

    • AECQ-100 Grade 2 Temperature Range
    • Operating Voltage from 9V to 65V
    • Ultra-Low Power Operation

    MAX17853
    14-Channel High-Voltage Data-Acquisition System

    • 65V Operating Voltage
    • Ultra-Low-Power Operation
    • Redundant ADC and Comparator (COMP) Acquisitions

    MAX77860
    USB Type-C、3A、开关模式Buck充电器,具有集成CC检测、反向升压和ADC

    • 单路输入开关模式充电器
    • USB Type-C检测
    • 一个Safeout LDO