The GLF4003 is an advanced ultra-low quiescent current (IQ) power multiplexer IC designed to manage dual power sources efficiently with seamless switching to a single output. It integrates two independent power switches, enabling reliable and intelligent power path control for systems requiring backup power or dual-input operation.

　　With its asymmetrical channel design, Channel 1 (VIN1) supports up to 2.0A with a low ON-resistance of 45mΩ, while Channel 2 (VIN2) supports 1.5A with 77mΩ, optimizing performance based on priority and load requirements.

　　The GLF4003 offers flexible input selection modes, including:

　　Automatic source selection (higher voltage priority)

　　Manual selection via control pins

　　VIN1 priority mode for primary power preference

　　This device ensures safe operation by preventing reverse current flow and eliminating cross-conduction between input sources, making it ideal for sensitive and power-critical applications.

　　With an ultra-low operating current of 1.1 µA and standby current of 400 nA, the GLF4003 is highly efficient and suitable for battery-powered and energy-sensitive systems.

　　Key Features

　　Dual-input, single-output power multiplexer

　　Wide input voltage range: 1.5V to 4.8V

　　Ultra-low quiescent current (IQ): 1.1 µA (typ.)

　　Low ON-resistance:

　　VIN1: 45 mΩ

　　VIN2: 77 mΩ

　　Output current capability:

　　VIN1: 2.0A

　　VIN2: 1.5A

　　Automatic, manual, and priority-based selection modes

　　Reverse current blocking and cross-conduction protection

　　Operating temperature: -40°C to +85°C

　　Compact DFN 2x3-8L package

　　Applications

　　Smart devices and portable electronics

　　IoT tracking systems

　　Backup power subsystems

　　Communication and networking equipment

　　E-meters and motor control systems

　　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.