The BQ24600RVAT is a stand-alone synchronous switch-mode highly integrated Li-ion/Li-polymer switch-mode battery-charge controller. It offers a constant-frequency synchronous PWM controller with high-accuracy charge current and voltage regulation, charge preconditioning, termination and charge status monitoring. The BQ24600 charges the battery in three phases such as preconditioning, constant current and constant voltage. Charge is terminated when the current reaches a minimum level. An internal charge timer provides a safety backup. The charge controller automatically restarts the charge cycle if the battery voltage falls below an internal threshold and enters a low-quiescent-current sleep mode when the input voltage falls below the battery voltage.
1.2MHz NMOS-NMOS Synchronous buck converter
High-accuracy voltage and current regulation
±0.5% Charge-voltage accuracy
±3% Charge-current accuracy
Internal loop compensation
Internal soft start
Input overvoltage protection
Battery thermistor sense hot/cold charge suspend
Battery detection
Built-in safety timer
Charge over-current protection
Battery short protection
Battery overvoltage protection
Thermal shutdown
<15µA Off-state battery discharge current
<1.5mA Off-state input quiescent current
Green product and no Sb/Br
This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
