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GLF74139

Ultra-low Power, 4.5 A Power Mux Switch with True Reverse Current Blocking

home Product Power Mux IC GLF74139
Product Features

  • Two-Input and Single-Output Power Multiplexer Switch

  • Automatic and Manual Input Selection Modes

  • True Reverse Current Blocking on Each Channel

  • Supply Voltage Range: 2.0 V to 5.5 V

  • RON = 20 mΩ Typ at 5.5 VIN1 or VIN2

  • 4.5 A Continuous Output Current Capability Per Channel

  • Ultra-Low Supply Current at Operation

    IQ: 4 uA Typ at 5.5 VIN

  • Ultra-Low Stand-by Current

    ISD: 30 nA Typ at 5.5 VIN

  • Smart Control Pins

    IEN and ISEL : 10 nA Typ at VEN or VSEL > VIH ; REN and RSEL : 500 kΩ Typ

  • HBM: 6 kV, CDM: 2 kV

GLF74139
GLF74139
Product manual
Sample application
Product Description

The GLF74139 is a fully integrated power path switch with the automatic and manual selection function.


The GLF74139 offers an industry leading true reverse current blocking (TRCB) function to protect input sources when the VOUT increase higher than VIN abnormally.


The EN pin can be used along with the SEL pin to control two integrated main FETs of the GLF74139. By the combination of these two pins, one of input source selection modes is set to provide power to downstream system seamlessly.


The automatic selection mode chooses a higher input voltage source between two inputs. In the manual selection mode, one of input sources is connected to 

downstream system.