Analog Devices / Maxim Integrated MAX77818 Switching Mode Charger
Analog Devices MAX77818 Switching Mode Charger is a high-performance companion PMIC for smartphones and tablet computers. The PMIC includes a dual-input, smart power path 3A switch-mode charger with reverse boost capability, adapter input protection up to 16VDC withstand, and proprietary ModelGauge™ (mg5) fuel gauge technology. The switch-mode battery charger's operating frequency is 4MHz and includes integrated, low-loss switches to provide a small L/C size, low heat, and fast battery charging programmable up to 3A. Analog Devices MAX77818 Switching Mode Charger also integrates two high-voltage input LDOs and is highly programmable with an I2C interface.
Features
- 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)
Applications
- Industrial PCs
- Portable medical devices
- Wearable, smartwatches
- Handheld devices
- Wireless speakers
- BLUETOOTH® headsets
- Smart Home automation, sensors
- Internet of Things (IoT)
Simplified Functional Diagram
Opublikowano: 2015-07-21
| Zaktualizowano: 2023-04-13