Linear LT3652太阳能2A电池充电方案

Linear 公司的LT3652是完整的降压电池充电器,输入电压从4.95V到32V,具有恒流/恒压充电特性,最大充电电流可达2A,当LT3652连接到太阳能电池板时,它的输入调整回路能使电池板保持在峰值输出功率.充电电流精度达5%,可编程的安全定时器能在充电时间到了时终止充电. LT3652可用在太阳能应用,遥控监视站, LiFePO4电池应用和手提仪表.本文介绍了LT3652的主要特性,方框图以及多种应用电路和演示板的指标,详细电路与所用材料清单.

LT3652 Power Tracking 2A Battery Charger for Solar Power

The LT 3652 is a complete monolithic step-down battery charger that operates over a 4.95V to 32V input voltage range. The LT3652 provides a constant-current/ constant-voltage charge characteristic, with maximum charge current externally programmable up to 2A. The charger employs a 3.3V fl oat voltage feedback reference,so any desired battery float voltage up to 14.4V can be programmed with a resistor divider.

The LT3652 employs an input voltage regulation loop, which reduces charge current if the input voltage falls below a programmed level, set with a resistor divider. When the LT3652 is powered by a solar panel, the input regulation loop is used to maintain the panel at peak output power.
..

查看全文