ON Semiconductor (Phoenix, AZ) introduced a single-cell, lithium-ion, battery-charge controller that features a standby current of 0.5mA. Designed for use in a wide variety of portable electronic devices, the NCP1800 delivers a smaller footprint, reduced part count and extended battery life.
The NCP1800 is a constant-current/constant-voltage, single-cell, charge controller for use with either lithium-ion or lithium-polymer batteries. A conditioning and pre-charge phase helps protect and prolong the life of a nearly depleted lithium-ion battery by lightly charging it before the onset of full charge. The battery capacity and system safety are also maximized through the NCP1800’s +1 percent voltage regulation. Integrated voltage and programmable current features offer design versatility by providing various charging options for different lithium-ion battery chemistries and capacities. The NCP1800 accommodates either a PNP or PMOS transistor to control battery charging. In the case of the PNP transistor, the device reduces the overall printed-circuit board area needed to implement a charging solution by eliminating the blocking diode.
The NCP1800 is packaged in the space-saving Micro8. Pricing for the device is $0.83 per unit in 12,000-unit quantities.
