UCC3813N-2

Duty Cycle:	99%
Base Part Number:	UCC3813-2
Mounting Type:	Through Hole
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Operating Temperature:	-55°C ~ 150°C (TJ)
Control Features:	Frequency Control
Fault Protection:	--
Frequency - Switching:	1MHz
Series:	--
Voltage - Supply (Vcc/Vdd):	8.3 V ~ 12 V
Voltage - Start Up:	12.5V
Topology:	Boost, Buck, Flyback, Forward
Voltage - Breakdown:	--
Internal Switch(s):	Yes
Output Isolation:	Non-Isolated
Part Status:	Active
Packaging:	Tube

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UCC3813N-2 is a voltage and current controller converter from Texas Instruments. It belongs to the family of PMIC (Power Management Integrated Circuit) AC DC Converters, Offline Switchers. The main purpose of this device is to provide offline constant current, voltage or power solutions using minimal external components.The UCC3813N-2 chip contains an operational amplifier plus clamping, feedback and control circuitry, allowing it to convert AC to DC without the need of an external diode array or switch. The device can be configured to control the output voltage or current, depending on the application.The UCC3813N-2 is used in a variety of applications including power supplies, point-of-load (POL) converters, motor control, and even medical instrumentation. It is very useful for generating regulated DC power from AC sources in flyback and forward converters. The device can also be used to drive LEDs, monitor AC line voltage or protect against over-current conditions.The device’s main operating principle is to detect the output voltage or current by monitoring the voltage across an external sense resistor. The integrated amplifier creates a control signal that is then used to turn on an N-channel MOSFET switch, which controls the power supply output. The UCC3813N-2 also has provisions for slew rate control, as well as detect and respond to over-current situations.The UCC3813N-2 offers a wide range of features, making it a reliable and cost-effective device for many applications. The main operation is based on the feedback loop principle in which the device detects output voltage changes and adjusts the input voltage accordingly. Other features include internal current limiting, under-voltage lockout, temperature compensation, and soft-start capability.The chip has a current output capacitor-free configuration, allowing for fast transient responses by minimizing the need for an output capacitor. The integrated voltage clamping circuit also prevents voltages from exceeding a safe level.In addition, the device has several input protection features which protect it from line spikes and power interruptions. This is especially useful in applications such as motor drives and small appliances where reliable power supply operation is of paramount importance.Overall, the UCC3813N-2 provides many advantages over other AC/DC converters due to its cost-effectiveness, flexibility and built-in protection features. It is a great choice for many applications in the field of power management and AC/DC conversion.

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