The RT9467 is a switch-mode single cell Li-Ion/Li-Polymer
battery charger for portable applications. It integrates a
synchronous PWM controller, power MOSFETs, input
current sensing and regulation, high-accuracy voltage
regulation, and charge termination. The charge current is
regulated through integrated sensing resistors. The
RT9467 also features USB On-The-Go (OTG) support.
RT9467 integrates D+/D- pin for USB host/charging port
detection.
The RT9467 optimizes for charging task by using a control
algorithm to vary the charge rate for different modes,
including pre-charge mode, fast charge mode (constant
voltage and constant current). The key charge parameters
are programmable through an I2C interface. The RT9467
will resume the charge cycle whenever the battery voltage
falls below an internal recharge threshold, and can
automatically enter sleep mode if the input power supply
is removed.资料下载
