GLF74139 is a high-performance power path management chip (Power Mux IC) launched by GLF Integrated Power. This device supports dual-input single-output power switching, enabling seamless switching among multiple power sources. It also features industry-leading True Reverse Current Block (TRCB) functionality, effectively safeguarding the system's power supply.

　　Its ultra-low power consumption design makes it highly suitable for battery-powered devices and low-power consumption application scenarios.

　　Key Features

　　2:1 Power Mux

　　Supports automatic/manual switching of two input power sources to a single output

　　Auto + Manual Switching Modes

　　Auto mode: Prioritizes the input source with the higher voltage

　　Manual mode: Input selection controlled via SEL/EN pins

　　TRCB True Reverse Current Block

　　Prevents backflow current when VOUT is higher than VIN, protecting the power system

　　No Cross Conduction

　　Complete isolation between the two input paths, avoiding short circuit risks

　　 Ultra-Low Power Design

　　Quiescent current: 4 μA (typical)

　　Standby current: 30 nA (typical)

　　 High-Performance Electrical Parameters

　　Input voltage range: 2.0 V – 5.5 V

　　On-resistance: 20 mΩ (typical)

　　Continuous output current: 4.5 A / channel

　　 Intelligent Control Pins

　　EN/SEL control logic is simple

　　Extremely low control pin current (10 nA level)

　　 Small Package

　　WLCSP package: 1.27 × 1.67 × 0.55 mm

　　Suitable for high-density PCB designs

　　How It Works

　　The GLF74139 integrates two sets of main power MOSFETs internally and realizes power path management through the EN and SEL control logic.

　　Automatic mode: The chip automatically selects the input with the higher voltage for power supply.

　　Manual mode: The user specifies the input source through logic signals.

　　TRCB mechanism: Automatically cuts off the return path when the output voltage is abnormally higher than the input.

　　Applications

　　This device is widely used in scenarios that require multi-power management and backup power supply.

　　·Smart Devices

　　· Backup Power Systems

　　· IoT Tracking Systems

　　·USB/Battery Dual Power Supply Devices

　　·Hot-swappable Power Systems

　　Model Comparisons (Related Models)

　GLF is a Chinese chip design company specializing in ultra-low power consumption energy saving and high-precision power protection technology. The company's main products include ultra-low power load switches, high-precision lithium battery protection chips, system protection chips and power management chips, etc., which are widely used in smart Internet of Things, smart wearable devices, smart home, industrial applications and automotive electronics and other fields. CORE is one of the agents of GLF,If you need to know more about and purchase GLF products, you can consult CORE customer service or fill out the RFQ.