Efficient ASIC for wireless Li-Ion battery charging and power management
For use in high-reliability and long-lifetime systems, ICsense has developed a versatile power management ASIC that provides power to transceivers, digital processors and analog blocks. The ASIC can draw its power from any primary battery, from rechargeable Li-ion batteries and from wireless power transfer through inductive coupling. Li-Ion batteries are recharged through the intelligent wireless power link. To assure a long battery life, Li-Ion charging is highly accurate up to 0.1% and peak currents are minimized.
Features:
- Intelligent wireless power transfer and power rectification
- High-efficiency inductive buck/boost DC-DC converter
- Linear regulators for accurate analog and digital supplies
- Li-Ion charge controller
- Highly-accurate battery charging reference: 4.1V ± 10mV
- Safety: under-/over-voltage, over-temperature protection
- Ultralow-power sleep and storage mode
- Sleep mode: 150nA (POR, clock, controller)
- Storage mode: 7nA (self-discharge of battery ~100nA
- 0.5um CMOS technology
- Temperature range 10°C to 60°C