BD2042AFJ-E2

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

BD2042AFJ-E2 is a Power Distribution Switches, Load Drivers developed by ON Semiconductor. It is designed for Power Management Load Drivers, and is able to deliver high current without the need for external components, making it suitable for mobile applications.

BD2042AFJ-E2 enables the addition of smart power management switches to a system, allowing efficient control of power supply in Power Management Load Drivers. It fully integrates a power switch and a fast single-channel load switch driver in a small, low profile SOIC-8 package. The integrated synchronization circuit supports fully remote open-drain control of the load switch without the need for a dedicated clock line, providing easy integration with existing system designs.

The design of BD2042AFJ-E2 use a core IC to reduce the external components and obtain higher efficiency. Maximum current output up to 0.35A and the output voltage is adjustable from 1.9V to 5V. Operating from an input supply range from 1.8V to 5.5V and includes integrated soft-start and Over Voltage Protection (OVP) functions.

BD2042AFJ-E2 provides high efficiency with the minimum parts count and the highest power density either in space-constrained mobile applications or in large-scale power management design. It is optimized for devices operating at 1.8V-5V with low voltage operation down to 1.8V and is ideal for automotive, LED lighting and industrial control applications.

Working principle

The BD2042AFJ-E2 is an advanced current-regulated power switch which employs a unique architecture. Its main components are a N-Channel MOSFET, a Linear Voltage Regulator (LVR) and an ON Semiconductor proprietary control circuitry. This sophisticated architecture provides high-efficiency power switch control with minimal external components.

The BD2042AFJ-E2 employs a linear regulator to maintain the output voltage. It has current sensing capability that allows the voltage regulation to remain accurate even as the load current varies. The output voltage is set using a VID code through an I2C port. The maximum current level is also configured through an I2C port. This will protect the device from an output over-current.

The BD2042AFJ-E2 employs a “Soft-start” feature to reduce inrush currents and minimize the output voltage drop when the switch is enabled. The soft-start feature is also used to monitor the input supply voltage and adjust the output voltage dynamically to match, providing a reliable and efficient power supply.

The BD2042AFJ-E2 also has an Over Voltage Protection (OVP) feature to guard against potential output over-voltage conditions. This protects not only the device itself but ensures that the surrounding system does not suffer from excessively high voltages.

In summary, the BD2042AFJ-E2 is an advanced current-regulated power switch which employs a unique architecture to provide high-efficiency power switch control with minimal external components. It provides high efficiency with the minimum parts count and the highest power density either in space-constrained mobile applications or in large-scale power management design. With its built-in OVP and soft-start features, it makes an ideal choice for power management load drivers.

The specific data is subject to PDF, and the above content is for reference