MAX8568B

Complete Backup-Management ICs for Lithium and NiMH Batteries

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Part Details

  • Automatically Manage All Backup Switchover Functions
  • Charge Both NiMH and Rechargeable Lithium Backup Batteries
  • On-Chip Battery Boost Converter for 1-Cell NiMH
  • Two Backup Output Voltages
  • Programmable Charge Current
  • Programmable Charge Voltage Limit
  • Low 17µA Operating Current in Backup Mode
  • Eliminate Many Discrete Components
  • Tiny 3mm x 3mm Thin QFN Package
  • MAX8568B
    Complete Backup-Management ICs for Lithium and NiMH Batteries
    MAX8568A, MAX8568B: Typical Operating Circuit
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    Evaluation Kits

    MAX8568AEVKIT

    Evaluation for the MAX8568A

    Features and Benefits

  • Charges Both NiMH and Rechargeable Lithium Backup Batteries
  • Internal Switch Step-Up DC-DC Converter for 1-Cell NiMH Battery Input
  • Two Backup Output Voltages
       3.3V, 50mA Step-Up DC-DC Converter
       2.5V, 10mA LDO
  • Programmable Charge Current
  • Programmable Charge Voltage Limit
  • On Board p-Channel MOSFETs for Backup Switchover
  • Fully Assembled and Tested
  • Product Details

    The MAX8568A evaluation kit (EV kit) is a fully assembled and tested circuit board that evaluates the MAX8568A and MAX8568B complete backup-management ICs for lithium and NiMH batteries. The MAX8568A EV kit can charge both NiMH and rechargeable lithium battery types; the EV kit default setting is for NiMH charging. Two on-board p-channel MOSFETs allow the evaluation of backup switchover from the primary source. Low-voltage backup cells can be stepped up by the on-chip synchronous-rectified step-up DC-DC converter, which has a default setting of 3.3V on the EV kit and is capable of 50mA output current. A secondary output provided by an on-chip LDO has a 2.5V output voltage for the MAX8568A and is capable of providing 10mA output current. When the main battery is connected, these two voltages are typically provided by a MAX1586/MAX1587 multi-output complete system power supply. The MAX8568A EV kit can also evaluate the MAX8568B. To evaluate the MAX8568B, order a free sample along with this EV kit.

    Applications

    • DSCs and DVCs
    • Internet Appliances and Web-Books
    • Palmtops and Wireless Handhelds
    • PDAs and PDA Phones
    • Smartphones

    MAX8568AEVKIT
    Evaluation for the MAX8568A

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