The SGM4064 is a charger front-end integrated circuit
designed to provide protection to Li-ion batteries from
failures of the charging circuitry. The IC continuously
monitors the input voltage and the battery voltage. The
device operates like a linear regulator, maintaining a
5.1V output with input voltages up to the input
over-voltage threshold (VOVP = 6.8V). During input
over-voltage conditions, the IC immediately turns off
the internal pass FET disconnecting the charging
circuitry from the damaging input source. Additionally, if
the battery voltage rises to unsafe levels while charging,
power is removed from the system. The IC also
monitors its die temperature and switches off if it
exceeds 145°C. When the IC is controlled by a
processor, the IC provides status information about
fault conditions to the host. SGM4064YDE8G/TR资料下载
