MAX1640EVKIT

MAX1640、MAX1641评估板


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说明

The MAX1640 evaluation kit (EV kit) is an adjustable switch-mode current source that operates from a 5.5V to 26V input. It is intended for microprocessor-controlled battery chargers. The charging current, maximum voltage, and pulse-trickle charge are programmed with external resistors. The EV kit is shipped configured for a maximum charge voltage (6 cells). It is configured as a step-down pulse-width modulator (PWM) with synchronous rectification, allowing fast-charge currents up to 1.5A with greater than 90% efficiency. The MAX1640 uses high-side current sense; this allows the load to connect directly to ground, eliminating ground potential errors. The MAX1641 uses low-side current sense.

The MAX1640 EV kit is a fully assembled and tested surface-mount printed circuit board. It can also be used to evaluate the MAX1641.

关键特性

  • 5.5V to 26V Input Voltage Range
  • Tight Current-Regulation Accuracy:
    • 2% (MAX1641)
    • 5% (MAX1640)
  • Up to 1.5A Fast-Charge Current
  • Up to 500kHz PWM Operation
  • Pulse-Trickle Charge Current
  • 100% Maximum Duty Cycle (low dropout)
  • Synchronous Rectifier
  • Surface-Mount Components
  • Fully Assembled and Tested

应用

  • 备用电池充电器
  • 电池供电应用
  • 蜂窝电话
  • 无绳电话
  • 手持终端
  • 笔记本电脑、笔记本电脑与掌上电脑
  • PCS电话
  • 便携式消费类产品
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。

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