DESCRIPTION

· The bq24153A/6A/8/9 is a compact, high-efficiency switch-mode charge management device for single-cell Li-ion and Li-polymer batteries.

· It integrates a synchronous PWM controller, power MOSFETs, input current sensing, and high-accuracy current and voltage regulation.

· The charge parameters are programmable through an I2C interface.

FEATURES

· High-accuracy voltage and current regulation with ±5% input current regulation accuracy and ±0.5% charge voltage regulation accuracy.

· Input Voltage Based Dynamic Power Management (VIN DPM) and bad adaptor detection.

· Built-in input current sensing and limiting, with integrated power FETs for up to 1.55-A charge rate.

· Synchronous fixed-frequency PWM controller operating at 3 MHz with 0% to 99.5% duty cycle.

· Robust protection features including reverse leakage protection, thermal regulation, and input/output overvoltage protection.

APPLICATIONS

· Mobile and smart phones.

· MP3 players.

· Handheld devices.