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MAX8922L - 30V Li+ Linear Battery Charger

Description

The MAX8922L linear battery charger safely charges a single-cell lithium-ion (Li+) battery.

Charging rate is optimized to accommodate the thermal characteristics of a given application.

There is no need to reduce the maximum charge current at the worst-case charger power dissipation.

Features

  • o Overvoltage-Protected 30VDC Rated Input (IN) o Input Overvoltage-Protected Safe 4.94V LDO Output o 2.3A GSM RF Test Mode o No External FET, Blocking Diode, or Sense Resistor Required o 1-Wire Easy Programmable Fast-Charge and GSM Test Mode (EN/SET) o Resistor-Programmable Fast-Charge Current (SETI) o Resistor-Programmable Top-Off Current Threshold (MIN) o Prequalification Charge o Power-OK Monitor Output (POK) o Charging-Status Output (CHG) o Die Temperature Regulation for Optimized Charge Rat.

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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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19-4929; Rev 0; 9/09 30V Li+ Linear Battery Charger with GSM Test Mode in 3mm x 2mm TDFN General Description The MAX8922L linear battery charger safely charges a single-cell lithium-ion (Li+) battery. Charging rate is optimized to accommodate the thermal characteristics of a given application. There is no need to reduce the maximum charge current at the worst-case charger power dissipation. Charging is optimized for a single Li+ cell using a control algorithm that includes low-battery precharging, voltage and current-limited fast charging, and top-off charging, while continuously monitoring for input overvoltage and device die-temperature conditions. The fast-charge current and top-off current thresholds are programmable by a simple 1-Wire® serial interface.
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