The FSUSB131K8X is a USB Over-Voltage Protection (OVP) device from Fairchild/ON Semiconductor. Its primary function is to protect USB ports and connected devices from excessive voltage, preventing damage from faulty power supplies or other voltage surges.

Applications

• Smartphones
• Tablets
• Laptops
• USB hubs
• Power banks

Features

• Over-voltage protection
• Short-circuit protection
• Low clamping voltage
• Fast response time
• Low on-resistance

Benefits

• Protects USB ports and connected devices from damage
• Improves system reliability
• Reduces the risk of fire or electrical hazards
• Minimizes voltage drop during normal operation
• Extends the lifespan of electronic devices

Specifications

Typical specifications include:

• Over-Voltage Protection Threshold: 5.8V (example, can vary)
• Clamping Voltage: 6.5V (example, can vary)
• On-Resistance: Typically less than 1 Ohm
• Supply Voltage: 4.5V to 5.5V (USB Standard)
• Operating Temperature: -40°C to +85°C
• Package: Small outline package (e.g., DFN)

This OVP device safeguards USB ports and connected electronics from voltage spikes and short circuits. The fast response time and low clamping voltage ensure that devices are quickly protected from potentially damaging events. The low on-resistance allows for efficient power delivery under normal operating conditions.