The LM3525MX-L, manufactured by Texas Instruments, is a high-performance Single Port USB Power Switch and Over-Current Protection IC designed for precision current limiting applications. This integrated circuit is specifically tailored for USB applications, ensuring that devices meet USB power specifications while protecting USB ports from over-current conditions that could potentially cause damage.

Key Features

• Current Limiting: The LM3525MX-L provides accurate and programmable current limiting to protect the USB port and connected devices from over-current conditions.
• Fast Response Time: It features a fast response time to fault conditions, quickly disconnecting the load in the event of over-current, thereby safeguarding the host device and power source.
• Thermal Shutdown: The device includes an internal thermal shutdown protection mechanism that disables the power switch in the event of excessive temperature, preventing thermal damage.
• Low Quiescent Current: The low quiescent current of the LM3525MX-L minimizes power consumption when in operation, making it an energy-efficient choice for portable and battery-powered applications.
• Automatic Recovery: After a fault condition has been removed, the device automatically recovers, simplifying the design by avoiding the need for manual reset.

Applications

The LM3525MX-L is suitable for a variety of applications, including:

• USB Hubs
• USB Peripheral Devices
• Hot-Swap Power Supplies
• Battery-Charger Circuits
• Desktop and Notebook Computers

Technical Specifications

The device comes in an industry-standard 8-pin SOP package, making it compatible with common PCB layouts. It operates over a wide input voltage range, accommodating various USB bus voltage levels. The LM3525MX-L's built-in charge pump circuitry allows for controlled rise and fall times of the output voltage, reducing inrush current and electronic noise during power transitions.

Quality and Reliability

As with all Texas Instruments products, the LM3525MX-L is designed to meet high standards of quality and reliability. This product is available in a lead-free package, supporting the industry's move towards environmentally friendly manufacturing processes.