MAX1870A
Features
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- 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 Ni Cd/Ni MH 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 ponents. The MAX1870A uses a proprietary step-up/stepdown control scheme that provides efficient charging. Analog inputs control charge current and voltage, and can be programmed by the host or hardwired. The MAX1870A accurately charges two to four lithiumion (Li+) series cells at greater than 4A. A programmable...
