BQ21061YFPT

BQ21061是一款高度集成的电池充电管理IC，其集成了适用于可穿戴设备、便携式设备和小型医疗设备的最常用功能，即充电器、用于系统电源的稳定输出电压轨、LDO以及按钮控制器。 BQ21061 IC集成了具有PowerPath的线性充电器，可快速准确地为小型电池充电，同时为系统提供稳定电压。稳定系统电压(PMID)输出可通过基于下行IC建议运行条件和系统负载的I²C来实现最佳的系统运行。 The BQ21061 IC is a highly programmable battery management device that integrates a 500-mA linear charger for single cell Li-Ion batteries, a general purpose LDO that may be configured as a load switch, and a pushbutton controller. Through it's I²C interface the host may change charging parameters such as battery regulation voltage and charge current, and obtain detailed device status and fault information. The push-button controller allows the user to reset the system without any intervention from the host and wake up the device from Ship Mode. The BQ21061 IC integrates a linear charger that allows the battery to be charged with a programmable charge current of up to 500 mA. In addition to the charge current, other charging parameters can be programmed through I²C such as the battery regulation voltage, pre-charge current, termination current, and input current limit current. The power path allows the system to be powered from PMID, even when the battery is dead or charging, by drawing power from IN pin. It also prioritizes the system load connected to PMID, reducing the charging current, if necessary, in order support the load when input power is limited. If the input supply is removed and the battery voltage level is above VBATUVLO, PMID will automatically and seamlessly switch to battery power.

• 具有1.25mA至500mA快速充电电流范围的线性电池充电器
• 精度为0.5%的I²C可编程电池稳压范围为3.6V至4.6V，阶跃为10mV
• 可配置的终止电流，支持低至0.5mA
• 可耐受20V的输入，具有3.4V至5.5V的典型输入电压工作范围
• 可编程热负荷曲线，完全可配置的热、温、凉、冷阈值
• 电源路径管理，用于系统供电和电池充电
• I²C可编程稳定系统电压(PMID)范围为4.4V至4.9V，此外还具有电池电压跟踪功能和输入直通选项
• 动态电源路径管理可以对通过弱适配器充电进行优化
• 利用高级I²C控制，主机可以根据需要断开电池或适配器
• I²C可配置负载开关或高达150mA LDO输出可编程范围为0.6V至3.7V，阶跃为100mV
• 10nA运输模式电池Iq
• 在为系统供电时具有400nA的Iq（PMID和VDD打开）

• 耳麦、耳塞和助听器
• 智能手表和智能追踪器
• 可穿戴健身和活动监测仪
• 血糖监测仪