High Precision Current Limit Power Switch

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GLF231xx SOT23 6L package

(~2.9mm) X (~2.8mm)
~1.1mm thick


  • Input Range: 2.5 V to 5.5 V
  • Programmable Output Constant Current Limit
    • Range: 40 mA ~ 2.1 A
  • Low RON: 56 mΩ Typ. @ 5 VIN
  • Ultra-Low IQ: 20 µA Typ. @ 5.0 VIN
  • Ultra-Low ISD: 50 nA Typ. @ 5.0 VIN
  • Under Voltage Lockout Protection
  • Output Voltage Slew Rate Controlled
  • True Reverse Current Blocking Protection
  • Short Circuit Protection
  • Deglitched Fault Flag Indication
  • Integrated Output Discharge Switch
  • Thermal Shutdown Protection
  • IEC 62368-1:2018 CB Certification No. FI-52066


  • USB ports
  • Notebooks
  • Set-Top Boxes
  • Telecom Systems


GLF 71311 schematic


The GLF2311A-T2G7 is an advanced technology fully integrated power switch for applications required for precision output current limiting. The GLF2311A-T2G7 features also various protection functions such as under voltage lockout, true reverse current blocking (TRCB), short circuit protection, and thermal shutdown.

The GLF2311A-T2G7 provides a built-in output voltage slew rate control to limit the inrush current and voltage surges. The FLGB output pin can be used to send a signal of fault events to the system controller. The integrated thermal shutdown (TSD) insures complete protection for the switch during output current limit and short circuit conditions. The GLF2311A-T2G7 is an ideal switch for USB power supply.