UC2843NG4

Frequency - Switching:	Up to 500kHz
Base Part Number:	UC2843
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Frequency Control
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	97%
Series:	--
Voltage - Supply (Vcc/Vdd):	7.6 V ~ 30 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost, Buck, Buck-Boost, Flyback, Forward
Output Configuration:	Positive
Function:	Step-Up, Step-Down, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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

Introduction

The UC2843NG4 is a Voltage Regulators, DC DC Switching Controllers made by ON Semiconductor. This device is effective for load management in portable devices and in industrial and automotive applications. This device has programmable soft start and cycle-by-cycle current limitation, making it suitable for a wide range of applications. The UC2843NG4 supports host microprocessor-based systems with monitoring, dimming, and protection features.

Application Field

The UC2843NG4 is mainly used for the regulation of the output voltage, such as voltage regulation in power converters, motor controllers and DC/DC switching regulators. It is also used in:

• Automotive applications
• Video systems
• Power supply systems
• Lighting control
• Sensor management
• Portable system management
• Networking systems
• Home appliances
• Industrial processes

Working Principle

The UC2843NG4 regulates output voltage with a number of on/off cycles per cycle. The output voltage is determined by the number of cycles and the on/off duration of each cycle. The output voltage can be adjusted by varying the on/off times. The device also has a soft start feature, which reduces the inrush current when the load is first applied. The UC2843NG4 has a programmable current limit feature, which helps to protect the device from over current conditions. The current limit is set by the voltage on the CT pin. By setting the voltage to a certain level, the device will limit the output current when the current rises above the programmed limit.The UC2843NG4 has two control pins, one for the synchronization (SYNC) and another for the duty cycle setting (DUTY). The duty cycle is used to control the output voltage, while the sync pin is used to achieve synchronization between multiple UC2843NG4s operating at different frequencies.Finally, the UC2843NG4 has two enable pins, ENA and ENB, to control the power supply. These pins can be used independently to enable or disable the supply, or they can be used together to create a controlled shutdown. This feature can be used to enable or disable certain circuits during system standby.

Conclusion

The UC2843NG4 from ON Semiconductor is a voltage regulator, DC DC switching controller which is used in many different applications. It has many features which make it suitable for use in portable devices, automotive and industrial applications, such as programmable soft start, cycle-by-cycle current limitation and two enable pins for controlled shutdown. This device can be used to regulate the output voltage in power converters, motor controllers, DC/DC switching regulators and other applications.

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

Part Number	Manufacturer	Price	Quantity	Description