Nano Current Consumed Integrated Load Switch with Reset Timer

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GLF Efuse

0.97mm x 1.47mm 
0.55mm thick
0.5mm pitch
6 bump


  • Ultra-Low ISD: 7 nA Typ @ 3.6VBAT
  • Ultra-Low IQ: 3 nA Typ @ 3.6VBAT
  • Low RON : 34mΩ Typ @ 3.6VIN
  • IOUT Max: 2A
  • Supply Voltage Range: 2.5 V to 5.5 V
    • 6 Vabs max
  • Reset Delay Time (/SRO Hold Time): 2.95 s
  • Reset Pulse Period: 360 ms
  • Turn-Off Delay Time: 2.95 s
  • Controlled Output Rise Time: 1 ms at 3.6 VBAT
  • Integrated Output Discharge Switch When Disabled
  • Operating Temperature Range: -40 to 85 °C
  • HBM: 6 kV, CDM: 2 kV
  • Ultra-Small: 0.97 mm x 1.47 mm WLCSP


  • Wearables
  • IoT Devices
  • Medical Devices


GLF 71311 schematic


GLF76121S Application Schematic


The GLF76121S is an ultra-efficient IQSmartTM load switch with an integrated reset timer for wearables and IoT devices.

The /SRO pin offers a true reset function enabling the load switch to completely disconnect the load from the input battery after a reasonable long delay time. After the reset period, the main switch of the GLF76121S reconnect the output load to the input battery for normal operation. The GLF76121S offers 2.95 second delay time before the 360 ms reset duration.

The ultra-low IQ enables direct interface to lower voltage chipset without any external circuit and maintains lower power consumption. The OFF input pin allows the GLF76121S to achieve complete shutdown with total downstream standby current of 7 nA typical. With the switch placed between a battery and system, this switch can help to significantly extend system battery life in mobile devices during shipping or periods of extended off time.

The GLF76121S help to reduce power consumption with the best in class RON and a breakthrough on state IQ of only 3 nA typical when the switch is on.

The GLF76121S integrated 1 ms slew rate control can also enhance system reliability by mitigating bus voltage swings during switching events. Where uncontrolled switching can generate high inrush current that results in voltage droop and/or bus reset events, the GLF slew rate control specifically limits inrush current during turn-on to minimize voltage droop. The output discharge function makes output voltage off quickly during the reset period.

The GLF76121S are available in 0.97 mm x 1.47 mm x 0.55mm wafer level chip scale package (WLCSP).