Two-Input and Single-Output Power Multiplexer IC
Manual Input Selection Mode
Wide Input Range
VIN1 = 2.8 V to 13 V ；VIN2 = 2.8 V to 6 V
IOUT Max
4 A Per Channel, VIN1 and VIN2
Low RON
24 mΩ Typ
Low Quiescent Current, IQ
36 µA Typ at VIN1 & VIN2 = 2.8 V ； 53 µA Typ at VIN1 & VIN2 = 6 V ；69 µA Typ at VIN1 =12 V
Low Stand-by Current, ISD
10 µA Typ at VIN1 & VIN2 = 2.8 V ；13 µA Typ at VIN1 & VIN2 = 6 V ；17 µA Typ at VIN1 =12 V
No Cross Conduction Between Two Input Sources
Programmable Over-Voltage Protection
Thermal Shutdown Protection
State Indication Function
Operating Temperature Range
- 40 °C to 85 °C
The GLF4031 is an integrated power multiplexer IC featuring dual independent power switches connected to a single output, enabling seamless transitions between two input power sources. The device supports a manual selection mode, configurable via the logic input pins S1 and S2. These pins allow system designers to manually select VIN1 only or VIN2 or and disable both switches.
The GLF4031 features low conduction resistance, enabling robust 4 A continuous current handling capability per channel. The device incorporates advanced cross-conduction protection that actively prevents current flow between input sources, maintaining isolation regardless of which power supply is active. The GLF4031 is ideally suited for power systems requiring an internal backup power supply.
