提高精度MAX1737的锂离子电池充电器

摘要：本应用笔记介绍了如何提高MAX1737的锂离子（锂离子）电池充电器的精度满量程电流检测和充电终止。 MAX1737的电流检测是比数据表中所列的更准确，但需要不同的计算，以实现改善。显示在文章的例子。

Maxim > App Notes > BATTERY MANAGEMENT

Keywords: charger, lithium-ion, Ii+, battery Jun 23, 2006

APPLICATION NOTE 3841
Improving Accuracy of the MAX1737 Lithium-Ion Battery Charger

Abstract: This application note describes how to improve full-scale current-sense and charge-termination
accuracy of the MAX1737 lithium-ion (Li+) battery charger. The MAX1737 current-sense is more accurate than
stated in the data sheet, but different calculations are needed to realize the improvement. Examples are
shown in the article.


Introduction

The current-sense on the MAX1737 is more accurate than stated in the data sheet. The data-sheet limits
represent 6-sigma numbers and are very conservative. Sample test data suggests approximately a 4-sigm