Voltage - Supply (Vcc/Vdd):	Not Required
Base Part Number:	VND5E025
Supplier Device Package:	PowerSSO-24
Package / Case:	PowerSSO-24
Operating Temperature:	-40°C ~ 150°C (TJ)
Fault Protection:	Current Limiting (Fixed), Over Temperature, Over Voltage
Features:	Auto Restart
Input Type:	Non-Inverting
Rds On (Typ):	25 mOhm (Max)
Current - Output (Max):	43A
Series:	VIPower™
Voltage - Load:	4.5 V ~ 28 V
Interface:	On/Off
Output Type:	N-Channel
Output Configuration:	High Side
Ratio - Input:Output:	1:1
Number of Outputs:	2
Switch Type:	General Purpose
Part Status:	Active
Packaging:	Tube

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VND5E025MK-E Application Field and Working Principle

Introduction

The VND5E025MK-E is part of STMicroelectronics\' advanced VND5E025MK-E power distribution switches, load drivers and other power management integrated circuit (PMIC) products. Designed for automotive, industrial, and consumer applications, it provides an efficient, power-saving solution for distributed system decision and control. This document will cover VND5E025MK-E application field, working principle and advantages in more detail.

Application Field

VND5E025MK-E is a single-channel high-side load switch, designed to control and protect automotive electronics such as body computer, rear view cameras, audio systems, etc. It supports a communication interface with other power management modules, with a maximum output current of 2.5A. Its over-current and overtemperature protection feature makes it suitable for applications that require high power, efficiency, and safety.VND5E025MK-E is also suitable for industrial application control. With a low control voltage of 0.8V, the load switch can cut off the power supply during dormant periods or when the output current is overloaded. Additionally, its intelligent low load power shutdown feature allows for safe, efficient operation in low load power ranges.VND5E025MK-E can also be used in consumer electronic devices, such as terrestrial and cable TV decoders, personal video recorders, and digital cameras, as a protective switch to reduce the impact of output current spikes on the rest of the power system.

Working Principle

The VND5E025MK-E is a single-channel high-side load switch designed to control and protect automotive electronics. It is mainly composed of three blocks: the load switch, the load drivers, and the power distribution switches. The load switch is responsible for providing enabling/disabling and current limitation control to the load drivers. The load drivers, in turn, serve to cut off the power supply, when needed, and to protect against over-current and overtemperature conditions. Finally, the power distribution switches handle power distribution from the power supply to the device, allowing for power savings and easy communication interface.The VND5E025MK-E features a low control voltage of 0.8V, as well as integrated charge-sharing and comparator functions to maximize efficiency. The load switch also features voltage level shift and signal synchronization capabilities, to reduce energy consumption and to ensure correct operation of the load drivers.

Advantages

VND5E025MK-E\'s operational voltage is lower than traditional solutions, offering the highest conversion efficiency possible. Its integrated hot-swap/hot-link capability allows for safe minimum energy usage, and its load-shedding feature allows for reduced load current and improved system efficiency. Its low operating voltage combined with hot link protection and advanced under-voltage lockout (UVLO) makes it ideal for various automotive, industrial and consumer applications.Furthermore, VND5E025MK-E comes with an integrated slow start function which effectively prevents inrush current at the time of power-on. This provides higher comfortable levels of control over the power supply. Additionally, an active clamping circuit alongside the three-state clocking mode minimizes ringing and optically isolated packages improve EMI/EMC performance.

Conclusion

The VND5E025MK-E is a single-channel high-side load switch from STMicroelectronics’ power management integrated circuit (PMIC) family, specifically designed for automotive, industrial, and consumer applications. It comes with a low control voltage 0.8V and a maximum output current of 2.5A, and offers improved energy efficiency, stability, and safety. Features such as integrated charge-sharing and comparator functions, voltage level shift, signal synchronization capabilities, and load-shedding feature makes the VND5E025MK-E an ideal power distribution switch, load driver, and power management solution.

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