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Texas Instruments has 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.
The 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.
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