Ultra-Low Current Consumption Power Multiplexer Switch with Auto & Manual Input Selection in SOT23-6L

GLF4001 package

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


  • Two-Input and Single-Output Power Multiplexer Switch
  • Automatic and Manual Input Selection Mode
  • Supply Voltage Range: 1.5 V to 5.5 V
    6 Vabs Max
  • RON :
    • 68 mΩ Typ. at 5.5 VIN1 or VIN2
    • 77 mΩ Typ. at 3.3 VIN1 or VIN2
  • 2 A Continuous Output Current Capability Per Channel
  • Ultra-Low Supply Current at Operation
    IQ : 4 µA Typ at 5.5 VIN
  • Ultra-Low Stand-by Current
    ISD : 20 nA Typ at 5.5 VIN
  • Smart Control Pins:
    • IEN and ISEL : 3 nA Typ at VEN or VSEL > VIH
    • REN and RSEL : 500 kΩ Typ
  • No Cross Conduction Between Two Inputs
  • Reverse Current Blocking when Disabled
  • Operating Temperature Range: -40 to 85 °C
  • HBM: 6 kV, CDM: 2 kV


  • Smart IoT Devices
  • Wearables / Portable Devices


GLF 71311 schematic


GLF4001 application schematic


The GLF4001 is an integrated power multiplexer switch with dual independent power switches connected to a single output pin to enable seamless transition between two input sources.

The GLF4001 provides an automatic selection mode as well as a manual selection mode by the combination of the logic input pins of EN and SEL. The EN input pin is used along with the select (SEL) input pin to select the automatic switching function, select VIN1 only, select VIN2 only, or turn both switches off. In the automatic selection mode, the GLF4001 automatically selects the higher input voltage source out of two input DC power supplies.

The GLF4001 features an ultra-efficient IQSmartTM technology that offers quiescent current (IQ) and shutdown current (ISD) in the industry. Low RON reduces conduction losses while low IQ and ISD solutions help designers to reduce parasitic leakage current, improve system efficiency, and increase battery lifetime.

The GLF4001 blocks any cross-conduction current between two input power sources. When the switch is disabled, the GLF4001 prevents the reverse current to the input source from the output at any higher Vout than Vin condition.


NOTE: Spec values & feature set for "Coming Soon" and "Development" devices are provided on a best estimate basis, based on available data at time of estimate. Values are subject to change. GLF makes no warrenties that it will release or offer for sale products that are marked “Coming Soon” or “Development” "Integrated Features" Table Key: √ = Feature Included, P = Programmable Feature

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