Analog Devices / Maxim Integrated MAX77818 开关模式充电器
美信集成 MAX77818 开关模式充电器是高性能配套 PMIC，适用于最新款智能手机和平板电脑。该 PMIC 采用专有 ModelGauge™ （mg5）电量计技术，带双输入、智能电源路径 3.0A 开关模式充电器，具有反向快速充电功能，以及最高可承受 16VDC 的适配器输入保护功能。
特性
- Smart power path, dual input switching charger
- Up to 13.4V operating/16V withstand/4A (CHGIN)
- Up to 6V operating/1.26A (WCIN)
- Reverse leakage blocking
- Reverse boost with up to 5.1V/1.5A (OTG)
- Integrated low-loss FETs for 3A charging/4.5A discharging
- 95.6% peak efficiency at 5V/4.35V
- Full-feature charger with protection
- Thermal regulation and JEITA compliance
- Two high-voltage input LDOs
- I2C serial interface
- 72-bump, 3.867mm x 3.608mm, 0.4mm pitch WLP
- ModelGauge m5 fuel gauge
- Time-to-empty and time-to-full prediction
- Accurate battery capacity (SOC) and time-to-empty readings
- Temperature, age, and discharge rate compensated
- No calibration
- Integrated FET current sensing
- Maintains accuracy without empty, full, or idle states
- Low quiescent current (IQ)
应用
- Industrial PCs
- Portable medical devices
- Wearable, smartwatches
- Handheld devices
- Wireless speakers
- BLUETOOTH® headsets
- Smart Home automation, sensors
- Internet of Things (IoT)
Simplified Functional Diagram
发布日期: 2015-07-21
| 更新日期: 2023-04-13