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TI switch-mode standalone battery charge controllers provide faster, cooler charging for 5-V to 28-V applications

10th March 2010

Texas Instruments

ES Admin

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Texas Instruments today introduced three new switch-mode standalone battery charger ICs for lithium-based battery-powered applications with a 5-V to 28-V 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

· Higher efficiency results in less heat dissipation than other solutions.

· Greater than 99 percent charge voltage and current accuracy optimize battery life cycle.

· Integrated, standalone solution enhances design flexibility and reduces overall solution size.

· Dynamic power management maximizes use of adapter power to power the system while charging the battery.