MAX745是Maxim美信半导体公司的一款电池管理产品，MAX745是开关模式锂离子电池充电器，本站介绍了MAX745的封装应用图解、特点和优点、功能等，并给出了与MAX745相关的Maxim元器件型号供参考。
MAX745 - 开关模式锂离子电池充电器 - 电池管理 - 精度高达±0.75%的Li+电池充电器，提供4A充电电流时不会出现发热现象 - 美信半导体
The MAX745 provides all functions necessary for charging lithium-ion (Li+) battery packs. It provides a regulated charging current of up to 4A without getting hot, and a regulated voltage with only ±0.75% total error at the battery terminals. It uses low-cost, 1% resistors to set the output voltage, and a low-cost N-channel MOSFET as the power switch.
The MAX745 regulates the voltage set point and charging current using two loops that work together to transition smoothly between voltage and current regulation. The per-cell battery voltage regulation limit is set between 4V and 4.4V using standard 1% resistors, and then the number of cells is set from 1 to 4 by pin-strapping. Total output voltage error is less than ±0.75%.
For a similar device with an SMBus™ microcontroller interface and the ability to charge NiCd and NiMH cells, refer to the MAX1647 and MAX1648. For a low-cost Li+ charger using a linear-regulator control scheme, refer to the MAX846A.
