Charger ICs for single-cell li-ion batteries
Torex Semiconductor
Linear charger ICs
Torex Semiconductor has unveiled the XC6802 series of linear charger ICs for single-cell lithium-ion batteries.
Available in the ultra-small USP-6C package, as well as in standard SOT-25 and SOT-89-5 versions, the XC6802 includes: a reference voltage source; battery voltage monitor; driver transistor; constant-current/constant-voltage charge circuit; over-heat protection circuit; and phase compensation circuit.
The battery charge termination voltage is internally set to 4.2V +/- 0.7 per cent and the trickle charge voltage and accuracy is 2.9V +/- 3 per cent.
In a typical application circuit, when the BAT pin voltage rises above 2.9V, the charger enters into constant-current mode (CC mode) and the battery is charged by the programmed current charge.
When the BAT pin voltage reaches 4.2V, the charger enters constant-voltage mode (CV mode) automatically.
After this, the charge current drops to a tenth of the programmed charge current and the charge terminates.
The charge status output pin - /CHG pin - is capable of checking the device's charging state while connected to an external LED.
With an external resistor (RSEN) between the ISEN pin and the VSS pin, the charge current can be set anywhere up to a maximum of 800mA.
This flexibility makes the XC6802 Series the ideal choice for a variety of battery charge applications.
Typical applications include charging docks and stationary chargers, MP3 and other portable audio players, mobile phones and PDAs as well as various Bluetooth applications.
More stories
LDO regulator is housed in ultra-small package
The XC6229 series is a high-speed LDO regulator housed in an ultra-small LGA-4B01 package.
Negative voltage regulators fit small capacitors
The XC6901/02 series from Torex are negative voltage regulators that are compatible with small ceramic capacitors.
High-speed LDO for low input/output applications
Torex has launched the XC6602 series, a high-speed, accurate LDO that can supply up to 1A of output current while consuming 110uA in low input/output applications.
Small voltage detectors with manual reset input
Torex has introduced the XC6127, a range of Voltage Detectors with ultra-low power consumption and suitable for monitoring a wide range of microprocessors in all types of battery-powered applications.
Torex launches high-speed 10.5V LDO regulator
Torex Semiconductor has launched the XC6505 series, a 10.5V LDO regulator that is targeted at applications that require a small form factor and a good amount of power dissipation.
