UC2842BD1G

Frequency - Switching:	Up to 500kHz
Base Part Number:	UC284*B
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-25°C ~ 85°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, Flyback
Output Configuration:	Positive
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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Introduction

The UC2842BD1G is a monolithic integrated circuit (IC) designed primarily for on/off control and switching of power in a wide variety of applications. As a integrated power switch, this IC operates as a switch between a DC source and a load in the circuit. By varying the input voltage and the on/off time, this switch is capable of providing a regulated level of voltage between the source and the load. This ability allows the switch to maintain the same level of power between the source and the load while controlling the amount of current that passes through the switch. Additionally, using this IC, the user can control the voltage level between the source and the load to maintain the desired level of power. It is also capable of performing as an on/off switch can be used in combination with PWM (pulse width modulation) to provide a variable voltage.

Features

This IC offers several features, such as:- High conversion efficiency – the UC2842BD1G can achieve a conversion efficiency up to 98 percent, allowing for a significant increase in battery life.- Low quiescent current operation – the IC can provide a low quiescent current operation, reducing the amount of power consumed during inactivity.- Adjustable on/off delay time – the adjustable on/off delay time of the UC2842BD1G allows the user to customize the timing of the switch, regulating the surge and drop in voltage.-Selectable output voltage – the user can select the output voltage between 2.5 and 5.5 volts.-Input voltage range – the input voltage range can be adjusted between 2.5 to 30 volts.- PWM control – this IC allows the user to use PWM control to regulate the output voltage between the DC source and the load.

Application Field

The UC2842BD1G can be used in a variety of applications, from industrial, automotive and medical to consumer electronics. Automotive applications include starter circuits, generator circuits and power-management ICs for electric cars. This IC can also be used in telecommunications, such as base station and wireless equipment, as well as industrial applications, including DC/DC converters, power supplies and solar power systems. Additionally, this IC is used in medical devices and consumer electronics, such as mobile phones, laptops and tablets.

Working Principle

The UC2842BD1G operates as a switching device between a DC source and a load in a circuit, allowing current flow in only one direction. It has a built-in oscillator that switches the PNP and NPN transistors on and off at a set frequency, providing a continuous on/off pulse to the load. The frequency can be adjusted using an external resistor, allowing the user to control the on/off delay timing and provide constant voltage between the source and the load. Additionally, this IC also has a power MOSFET gate driver that converts the low-level control input signals into a fast, high-level drive for the power MOSFET. The UC2842BD1G also contains a current sense amplifier that senses the average current flowing through the load and limits this current to a pre-set limit. This limit is chosen based on the amount of current that the load can handle without failure or damage. Additionally, this IC also has built-in over temperature and over-current protection, allowing the user to use it safely without fear of damage.

Conclusion

The UC2842BD1G is a highly versatile and reliable IC that can be used for a wide variety of applications, from automotive to medical. It can operate as a switch between a DC source and a load, providing a regulated level of voltage and current between the two. The IC also contains several safety features, such as over-temperature and over-current protection, and adjustable on/off delay timing that allow the user to customize the operating conditions of the IC. Finally, by using PWM control, this IC is capable of providing a variable voltage between the DC source and the load.

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