UC2842AQDR Integrated Circuits (ICs)

Frequency - Switching:	Up to 500kHz
Base Part Number:	UC2842AQ
Supplier Device Package:	14-SOIC
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 125°C (TA)
Control Features:	Frequency Control
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	96%
Series:	--
Voltage - Supply (Vcc/Vdd):	10 V ~ 30 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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UC2842AQDR - DC DC Switching Controllers

The UC2842AQDR is a sophisticated automatic on/off switching controller specifically engineered to regulate input DC voltages with high efficiency. The integrated device allows the user to regulate and switch between two DC sources with high efficiency, complete with under-current, over-current, and short-circuit protection. Being highly accurate, the device ensures consistent, high-quality power output, making it a great choice for applications including auxiliary equipment in automobiles, low voltage power supplies, programmable logic controllers (PLCs), solar power systems and robotics.

Application Field and Working Principle

The UC2842AQDR is a switching controller designed to be utilized in circuits where effective power is needed with minimal power loss. It can be used to regulate the input DC voltages of different types of equipment, like PLCs, solar panels and robotics. This means that the user can switch between two different sources of DC power, ensuring the consistent quality and efficiency of the power output.

Control Circuit

The UC2842AQDR functions as a voltage regulation and control circuit, and is connected to two control inputs. When the voltage of the first control input is higher than the second one, the device will switch the input to the one with the higher voltage. When the voltage of the second control input is higher than the first one, then the device will switch the input off, giving a regulated, consistent power supply to the equipment. The UC2842AQDR also functions as a current limiter, so that the current that flows from the two inputs don\'t exceed the pre-set maximum value. This is particularly useful for applications such as large solar power systems, where the system needs to be protected from power surges or diverts in order to maintain efficiency.

Factors for Consideration

A user must consider several factors when choosing a switching controller. Firstly, the power usage of the application must be taken into account. If the application requires a comparatively high amount of power, then a device with a higher maximum load rating can be selected. Secondly, the user must consider the voltage range of application. If the application requires a largely fluctuating voltage, then they must be sure that the controller can support this range. Thirdly, the user should be sure to consider the environmental conditions of their application. Extreme temperatures, moisture and dust can drastically reduce the overall life span of the device, and should be taken into consideration before choosing a switching controller.

Advantages

The UC2842AQDR offers a state-of-the-art switching solution, designed for applications where efficiency is paramount. By allowing the user to easily switch between two DC sources, the device can help to ease electrical requirements, as well as ensuring that the equipment receives a consistent source of power, with minimal power loss. Furthermore, the device also incorporates a built-in current limiter and provides a wide range of protection, including under-current, over current and short-circuit protection. Combined with, the device is highly durable and reliable, making it a great choice for applications such as those in automobiles and robotics.

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