The TPS2068DR, manufactured by Texas Instruments, is a state-of-the-art USB power distribution switch designed for applications where heavy capacitive loads and short-circuits are likely to be encountered. This integrated circuit is particularly suitable for USB hubs, docking stations, and other computer peripherals that require power management for downstream USB ports.

Key Features

• Multiple USB Ports: The TPS2068DR supports up to two downstream ports, with a 1.5A continuous current limit per port, which is more than sufficient for most USB-powered devices.
• Overcurrent Protection: With built-in overcurrent protection, the device safeguards both the host and the downstream devices from excessive current draw that could otherwise cause damage.
• Thermal Shutdown: The thermal shutdown feature prevents the chip and connected devices from overheating, thus ensuring safe operation under various conditions.
• Accurate Current Limiting: The TPS2068DR provides accurate current limiting to prevent excessive power draw, which is essential for maintaining the integrity of the USB bus power.
• Low On-Resistance: The low on-resistance of the internal FET helps to minimize voltage drop and power loss, ensuring efficient power distribution to connected devices.

Applications

The versatility of the TPS2068DR makes it an excellent choice for a variety of applications beyond just USB hubs. These include self-powered and bus-powered peripherals, hot-swap supplies, and battery-charger circuits. Its robust design ensures reliable operation even in environments where power fluctuations and surges are common.

Technical Specifications

• Input Voltage Range: 2.7V to 5.5V
• Continuous Output Current: 1.5A (maximum per port)
• Operating Temperature Range: -40°C to 85°C
• Packaging: 8-pin SOIC (DR) package

Overall, the TPS2068DR by Texas Instruments represents a reliable and efficient solution for power distribution in USB applications, ensuring safe and stable operation across a wide range of devices.