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MAX1873 - Simple Current-Limited Switch-Mode Li Charger Controller

General Description

The low-cost MAX1873R/S/T provides all functions needed to simply and efficiently charge 2-, 3-, or 4series lithium-ion cells at up to 4A or more.

It provides a regulated charging current and voltage with less than ±0.75% total voltage error at the battery terminals.

Key Features

  • MAX1873 Ordering Information PART MAX1873REEE MAX1873SEEE MAX1873TEEE TEMP. RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C PIN-.

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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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19-2099; Rev 0; 7/01 ILABLE N KIT AVA EVALUATIO Simple Current-Limited Switch-Mode Li+ Charger Controller General Description The low-cost MAX1873R/S/T provides all functions needed to simply and efficiently charge 2-, 3-, or 4series lithium-ion cells at up to 4A or more. It provides a regulated charging current and voltage with less than ±0.75% total voltage error at the battery terminals. An external P-channel MOSFET operates in a step-down DC-DC configuration to efficiently charge batteries in low-cost designs. The MAX1873R/S/T regulates the battery voltage and charging current using two control loops that work together to transition smoothly between voltage and current regulation.