The RT9728GQW is a power distribution switch manufactured by Richtek USA Inc. This device is designed to provide robust protection for USB ports and other power interfaces, safeguarding connected devices from overcurrent, overvoltage, and short-circuit conditions. Its integrated low on-resistance MOSFET minimizes power loss, contributing to energy efficiency and reduced heat generation.

Applications

• USB Power Distribution in Laptops and Desktops
• Power Supply for Portable Devices like Smartphones and Tablets
• USB Charging Ports in Automotive Applications
• Hot-Swap Applications
• General Overcurrent and Overvoltage Protection Circuits

Features

• Low On-Resistance: Minimizes voltage drop and power dissipation.
• Overcurrent Protection (OCP): Limits the output current to a safe level, protecting the load and the power source.
• Overvoltage Protection (OVP): Protects the load from excessive input voltage.
• Short-Circuit Protection (SCP): Quickly shuts down the switch in the event of a short circuit.
• Thermal Shutdown (OTP): Protects the device from overheating by shutting down the switch when the temperature exceeds a safe limit.
• Enable/Disable Control: Allows for external control of the switch.

Benefits

• Enhanced System Reliability: Prevents damage to connected devices due to power faults.
• Reduced Power Consumption: Low on-resistance ensures minimal power loss.
• Simplified System Design: Integration of protection features reduces the need for external components.
• Improved Safety: Thermal shutdown protects the device from overheating.
• Compliance with USB Standards: Ensures compatibility with USB devices.

The RT9728GQW is available in a space-saving package, making it suitable for compact electronic devices. It offers a wide input voltage range and is designed for ease of use, with simple control signals. Its comprehensive protection features make it an ideal choice for safeguarding sensitive electronic equipment from power-related issues.

Technical Specifications:

• Input Voltage Range: Consult datasheet for specific range (Typically 2.5V to 5.5V)
• On-Resistance: Low, consult datasheet for specific value.
• Overcurrent Protection Threshold: Consult datasheet for specific value.
• Overvoltage Protection Threshold: Consult datasheet for specific value.
• Operating Temperature Range: -40°C to +85°C (Consult datasheet for verification)