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Evaluation Kit for the MAX1640, MAX1641

Product Details

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.

Key Features

  • 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

Applications/Uses

  • Backup Battery Charger
  • Battery-Powered Applications
  • Cell Phones
  • Cordless Phones
  • Handy Terminals
  • Laptop, Notebook, and Palmtop Computers
  • PCS Phones
  • Portable Consumer Products

Technical Docs

Data Sheet Evaluation Kit for the MAX1640, MAX1641 Jul 01, 1997

Design & Development

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Parameters

Key Features

  • 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

Applications/Uses

  • Backup Battery Charger
  • Battery-Powered Applications
  • Cell Phones
  • Cordless Phones
  • Handy Terminals
  • Laptop, Notebook, and Palmtop Computers
  • PCS Phones
  • Portable Consumer Products

Description

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.

Technical Docs

Data Sheet Evaluation Kit for the MAX1640, MAX1641 Jul 01, 1997

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal