Two-Input and Single-Output Power Multiplexer Switch
Auto and Manual Input Selection Mode
Wide Input Range
1.5 V to 4.5 V
Low RON
Channel 1, VIN1 = 21 mΩ Typ at 5.5 VIN ；Channel 2, VIN2 = 38 mΩ Typ at 5.5 VIN
IOUT Max
Channel 1 = 2 A ；Channel 2 = 1.5 A
Ultra-Low Supply Current at Operation
IQ: 1.1 μA Typ at 5.5 VIN
Ultra-Low Stand-by Current
ISD: 500 nA Typ at 5.5 VIN
Reverse Current Blocking
Operating Temperature Range
-40 °C to 85 °C
The GLF4002 is an integrated power multiplexer IC with dual independent power switches connected to a single output pin to enable seamless transition between two input sources. The GLF4002 features asymmetrical power FET characteristics. Channel 1 (VIN1) provides lower conduction resistance to support 2 A continuous current capability. The current rating of another channel (VIN2) is 1.5 A. It is an ideal solution for a power system with an internal back up power source.
The GLF4002 provides an automatic selection mode and a manual selection mode. The switching of these two modes is executed by combining the EN and SEL pin settings. The EN input pin has an internal threshold voltage to offer a preference to select the channel 1 (VIN1) power source. In the automatic input selection mode, the GLF4002 automatically selects a higher input voltage source between two input power sources.
