The RT9536 is a fully integrated single cell Li-ion battery
charger IC ideal for portable applications. The RT9536
optimizes the charging task by using a control algorithm
including pre-charge mode, fast charge mode and constant
voltage mode. The input voltage range of the VIN pin can
be as high as 28V. When the input voltage exceeds
the OVP threshold, it will turn off the charging MOSFET
to avoid overheating of the chip.
In RT9536, the maximum charging current can be
programmed with an external resistor. For USB application,
the user can set the current to 100mA/500mA through
the EN/SET pin. For the factory mode, the RT9536 can
allow 4.2V or 4.35V/2.3A power pass through to support
system operation. It also provides a 50mA LDO to support
the power of peripheral circuit. The internal thermal
feedback circuit regulates the die temperature to optimize
the charge rate for all ambient temperatures. The RT9536
provides protection functions such as under voltage
protection, over voltage protection for VIN supply and
thermal protection for battery temperature.资料下载
