TI Introduces Switch-Mode Standalone Battery Charge Controllers For 5 to 28V Applications
Texas Instruments Inc. (TI) introduced three new switch-mode standalone battery charger ICs for lithium-based battery-powered applications with a 5 to 28V input. These devices provide highly accurate and efficient charging in a small package for mass market applications, such as industrial handhelds, mobile Internet devices (MIDs), netbooks, power tools and portable medical devices.
These devices offer a constant-frequency synchronous switching pulse-width modulation (PWM) controller with highly accurate charge current and voltage regulation, charge preconditioning, termination, adapter current regulation and charge status monitoring. The battery is charged in three phases: preconditioning, constant current and constant voltage. A programmable charge timer provides a safety backup.
Key features and benefits include: high efficiency results in low heat dissipation; greater than 99% charge voltage and current accuracy optimize battery life cycle; integrated, standalone solution enhances design flexibility and reduces overall solution size; and dynamic power management maximizes use of adapter power to power the system while charging the battery.
The bq24610 and bq24617 are available now in a 24-pin 4 x 4mm² QFN package. The bq24600 is available in a 16-pin 3.5 x 3.5mm² QFN package. The bq24610 is priced at $2.60 and the bq24600 and bq24617 are priced at $2.90, in quantities of 1,000.
