Simple Current-Limited Switch-Mode Li Charger Controller

 

 

Features

Low-Cost and Simple Circuit

Charges 2-, 3-, or 4-Series Lithium-Ion Cells

AC Adapter Input-Current-Limit Loop

Also Charges Ni-Based Batteries

Analog Output Monitors Charge Current

±0.75% Battery-Regulation Voltage

5µA Shutdown Battery Current

Input Voltage Up to 28V

200mV Dropout Voltage/100% Duty Cycle

Adjustable Charging Current

300kHz PWM Oscillator Reduces Noise

Space-Saving 16-Pin QSOP

MAX1873 Evaluation Kit Available to Speed

Designs

 

 

 

 

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