Batteries and Portable Power

Maxim Integrated Products Debuts the MAX1873R/S/T Lithium-Ion Charger Controller

Maxim Integrated Products (Sunnyvale, CA) announced a new current-limited, switch-mode lithium-ion charger controller. The MAX1873R/S/T is designed to provide all of the functions needed to simplify and charge 23- or 4-series lithium-ion cells at up to 4A or more. It provides a regulated chargin current and voltage with less than 0.75 percent total voltage error at the battery terminals. An external p-channel MOSFET operates in a step-down dc/dc configuration to charge the batteries.

The MAX1873R/S/T regulates the battery-voltage and charging current using two control loops. An additional control loop limits current drawn from the input source. An analog voltage output proportional to charging current is also supplied.

Maxim Integrated Products Inc.
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