UCC2803NG4

Frequency - Switching:	31kHz
Base Part Number:	UCC2803
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):	99%
Series:	--
Voltage - Supply (Vcc/Vdd):	3.6 V ~ 12 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost, Flyback, Forward Converter
Output Configuration:	Positive
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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UCC2803NG4 Application Field and Working Principle

The UCC2803NG4 is a specially designed DC to DC switching controller from the Texas Instruments family of Precision Monolithic Integrated Circuit (PMIC) voltage regulators. It is a go-to device for customers looking for something more efficient and better performing than their linear counterparts.This specialist device provides up to 3A output current capabilities which makes it ideal for applications requiring high-speed switching controllers, such as computing, networking devices, and other digital equipment. It is a single-channel device that features frequency modulation, over-current protection, and a thermal shutdown capability. This makes it reliable when dealing with high-power applications or when a wide temperature range is needed. It even has a built-in startup system to give users a hassle-free installation.The UCC2803NG4 has a wide range of features to optimize its performance, including adjustable switching frequency, programmable current limit, and a wide input voltage tolerance circuit that ensures reliable operation even when dealing with higher voltages. Its switching frequency range is from 20kHz to 1.5MHz and has an adjustable peak current limit range from 1.7A to 3.4A. It also boasts a wide operating temperature range from -40°C to +125°C, making it suitable for a variety of applications.The UCC2803NG4 relies on its spring-back gate drive mechanism for current-limiting protection and enhanced over-voltage fault protection. While it utilizes a low impedance gate drive, its high slew rate allows for accurate current limit control. The overall design enables the device to perform high accuracy voltage regulation and peak current-limit protection, ensuring reliable performance even when dealing with high-power applications.The UCC2803NG4 works by sensing the output current and adjusting the control voltage given to the power switch. The voltage adjustment ensures that the input voltage is just right to maintain the output current. In turn, this regulates the voltage that is outputted from the power switch. This is essentially how the device performs its voltage regulation task.In conclusion, the UCC2803NG4 from Texas Instruments is an efficient and reliable DC to DC switching controller packaged in a small form factor. With features such as adjustable switching frequency, programmable current limit, and a wide input voltage tolerance, it is an ideal device for those who require high-power performance. Its spring-back gate drive mechanize and its low impedance gate drive make it reliable and able to perform accurate current limit protection, making it ideal for applications where high accuracy and peak current-limit protection are needed.

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