UC3872MTR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Ballast Controller
Frequency:	57kHz ~ 78kHz
Voltage - Supply:	4.5 V ~ 24 V
Current - Supply:	6mA
Current - Output Source/Sink:	--
Dimming:	No
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	16-SSOP (0.154", 3.90mm Width)
Supplier Device Package:	16-SSOP
Base Part Number:	UC3872

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The UC3872MTR is an integrated switching regulator controller specifically designed for use in ballast-type lighting controllers and other tough supply applications. Thanks to its internal circuitry, it can be used in a wide variety of conditions and provides a total system solution in a small package. This article will explain the application field and working principle of the UC3872MTR.The UC3872MTR is part of a family of switching regulators designed to be used in ballast-type lighting control systems. The UC3872MTR provides a complete ballast controller solution with built-in start-up, dimming and overvoltage protection. Its integrated architecture makes it ideal for applications requiring high efficiency, low EMI emissions, and simplified ballast control. The integrated protection makes it ideal for applications such as HID ballast controllers, DC-DC gate drivers, offline LED drivers, universal input AC/DC drivers, and LED lighting systems.The UC3872MTR is designed to provide a cost-effective solution for a variety of ballast control applications. It provides many features including integrated soft start, automatic load protection and dimming, dynamic input and output voltage/current limits, and overvoltage protection. The device also provides sense loop current sensing up to 20mA, programmable dimming (up to 256 steps) and dead time control. The UC3872MTR has a wide input voltage range of 8 to 40V, and is protected from transient spikes and surges up to 55V. It also supports 3 current sensing voltage levels for use in different operating conditions.The UC3872MTR’s working principle is based on its integrated driver and comparator circuits. The controller compares the sensed output current to the programmed limit, and adjusts its duty cycle accordingly. This ensures that the output current remains within a safe range. The IC also features an internal regulator which ensures that the output voltage remains within the desired range. The feedback loop also regulates the device’s operating frequency, allowing the device to operate at a constant switching frequency without requiring an external clock source. This eliminates the need for tuning components, and increases efficiency and reduces cost. The UC3872MTR is designed to provide a cost-effective solution for a variety of ballast control applications. It combines a high efficiency and high frequency switching operation with a number of integrated features, such as automatic load protection, dynamic input and output voltage/ current limit control, sense loop current sensing, and overvoltage protection.The integrated circuitry makes the UC3872MTR ideal for use in a wide variety of applications. It is also capable of providing a total system solution in a small package, eliminating the need for additional components. Its rugged construction makes it suitable for a variety of conditions and provides dependable protection from transient spikes and surges. This makes it highly reliable and ideal for use in challenging applications. In conclusion, the UC3872MTR is a versatile integrated switching regulator controller specifically designed for use in ballast-type lighting controllers and other tough supply applications. It combines a high efficiency and high frequency switching operation with a number of integrated features, such as automatic load protection, dynamic input and output voltage/ current limit control, sense loop current sensing, and overvoltage protection. It is highly reliable and ideal for use in challenging applications.

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