Richtek

RT9742EGJ5  

Power Distribution Switches, Load Drivers

RT9742EGJ5 Description

The RT9742EGJ5 is a high-performance power switch designed by Richtek USA Inc., a leading manufacturer in the power management integrated circuit (PMIC) industry. This device is specifically engineered to provide robust and reliable power switching capabilities in a compact TSOT23-5 package. The RT9742EGJ5 features a high-side output configuration, making it ideal for applications where the load is connected to the positive supply rail. With a maximum output current of 1.5A, this power switch is capable of handling significant loads while maintaining high efficiency and minimal power loss.

The RT9742EGJ5 is designed to operate within a wide load voltage range of 2.7V to 6V, ensuring compatibility with a variety of power sources. The device does not require a separate supply voltage (Vcc/Vdd), simplifying the overall circuit design and reducing component count. The low on-state resistance (Rds On) of 70mOhm ensures minimal voltage drop across the switch, thereby maximizing power transfer efficiency and reducing heat generation.

RT9742EGJ5 Features

The RT9742EGJ5 offers several advanced features that enhance its performance and reliability:

• Load Discharge and Status Flag: These features provide enhanced control and monitoring capabilities, allowing designers to implement sophisticated power management strategies.
• Fault Protection: The device includes comprehensive fault protection mechanisms such as fixed current limiting, over-temperature protection, reverse current protection, and under-voltage lockout (UVLO). These features ensure the switch operates safely under various fault conditions, protecting both the switch and the connected load.
• Compliance and Environmental Considerations: The RT9742EGJ5 is REACH unaffected and RoHS3 compliant, making it suitable for use in environmentally conscious designs. The moisture sensitivity level (MSL) of 3 (168 hours) ensures the device can withstand typical manufacturing processes without degradation.
• Mounting and Packaging: The surface-mount technology (SMT) and tape & reel (TR) packaging options make the RT9742EGJ5 easy to integrate into modern PCB designs, facilitating automated assembly processes.

RT9742EGJ5 Applications

The RT9742EGJ5 is well-suited for a variety of applications where reliable power switching is essential. Some specific use cases include:

• USB Power Switches: The device's 1:1 input-to-output ratio and USB switch type make it ideal for managing power in USB-based applications, ensuring stable and controlled power delivery to connected devices.
• Consumer Electronics: In devices such as smartphones, tablets, and laptops, the RT9742EGJ5 can be used to manage power to various subsystems, providing efficient and reliable power switching.
• Industrial Equipment: The robust fault protection and wide operating voltage range make the RT9742EGJ5 suitable for industrial applications where reliability and durability are paramount.
• Automotive Applications: The device's compact size and high reliability make it a good fit for automotive applications, where space constraints and harsh operating conditions are common.

Conclusion of RT9742EGJ5

The RT9742EGJ5 from Richtek USA Inc. is a versatile and reliable power switch that offers a comprehensive set of features tailored to meet the demands of modern electronic devices. Its high-side output configuration, wide load voltage range, and low on-state resistance ensure efficient power delivery and minimal power loss. The advanced fault protection mechanisms and compliance with environmental standards further enhance its appeal in a wide range of applications. Whether used in consumer electronics, industrial equipment, or automotive systems, the RT9742EGJ5 provides a robust and efficient solution for power management needs.

RT9742EGJ5 Documents

Download datasheets and manufacturer documentation for RT9742EGJ5