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MAX1870A - Step-Up / Step-Down Li+ Battery Charger

General Description

The MAX1870A step-up/step-down multichemistry battery charger charges with battery voltages above and below the adapter voltage.

This highly integrated charger requires a minimum number of external components.

Key Features

  • Patented Step-Up/Step-Down Control Scheme.
  • ±0.5% Charge-Voltage Accuracy ±9% Charge-Current Accuracy ±8% Input Current-Limit Accuracy Programmable Maximum Battery Charge Current Analog Inputs Control Charge Current, Charge Voltage, and Input Current Limit Analog Output Indicates Adapter Current Input Voltage from 8V to 28V Battery Voltage from 0 to 17.6V Charges Li+ or NiCd/NiMH Batt.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-3243; Rev 0; 4/04 KIT ATION EVALU LE B A IL A AV Step-Up/Step-Down Li+ Battery Charger Features ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ Patented Step-Up/Step-Down Control Scheme* ±0.5% Charge-Voltage Accuracy ±9% Charge-Current Accuracy ±8% Input Current-Limit Accuracy Programmable Maximum Battery Charge Current Analog Inputs Control Charge Current, Charge Voltage, and Input Current Limit Analog Output Indicates Adapter Current Input Voltage from 8V to 28V Battery Voltage from 0 to 17.6V Charges Li+ or NiCd/NiMH Batteries Tiny 32-Pin Thin QFN (5mm x 5mm) Package General Description The MAX1870A step-up/step-down multichemistry battery charger charges with battery voltages above and below the adapter voltage. This highly integrated charger requires a minimum number of external components.