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GLF74138

4.5 A Power Mux IC with Bidirectional Operation and Low Power Consumption

home Product Power Mux IC GLF74138
Product Features

  • Two-Input and Single-Output Power Multiplexer Switch

  • Automatic and Manual Input Selection Modes

  • No Cross Conduction between Two Input Sources

  • Bidirectional Current Flow at Conduction State

  • Reverse Current Blocking when Disabled

  • 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 μA 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

GLF74138
Product manual
Sample application
Product Description

The GLF74138 is a fully integrated power path switch with the automatic and manual selection function.


The EN pin can be used along with the SEL pin to control two integrated main FETs of the GLF74138. By the combination of these two pins, one of input source selection modes is set to provide power to downstream system seamlessly. Each FET of the GLF74138 is conducted bidirectionally when it is turned on and current flows from VOUT to VIN pin and vice versa.


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.