Over-Voltage Protection IC and Li+ Charger Front-End Protection IC with LDO Mode
Over-Voltage Protection IC and Li+ Charger Front-End Protection IC with LDO Mode

The SGM4065 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 = 7.1V). 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. When the IC is controlled by a processor, the IC provides status information about fault conditions to the host.

The SGM4065 is available in a Green TDFN-2×2-8L package and is rated over the -40 to +85 temperature range.



  • Input Over-Voltage Protection

  • Accurate Battery Over-Voltage Protection

  • Soft-Start to Prevent Inrush Currents

  • Soft-Stop to Prevent Voltage Spikes

  • 18V Maximum Input Voltage

  • Supports up to 1.5A Load Current

  • Thermal Shutdown

  • Enable Function

  • Fault Status Indication

  • Available in a Green TDFN-2×2-8L Package


Smart Phones, Mobile Phones


MP3 Players

Low-Power Handheld Devices

Part Number Status Package Pins Pb-Free Temp Range
SGM4065YDE8G/TR Production TDFN-2×2-8L 8 Y -40℃ to +85℃ Samples