UCC2804D/81221G4

Voltage - Supply (Vcc/Vdd):	8.3 V ~ 12 V
Base Part Number:	UCC2804
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Frequency Control
Fault Protection:	Current Limiting
Frequency - Switching:	Up to 1MHz
Duty Cycle:	49%
Series:	--
Voltage - Start Up:	12.5V
Topology:	Boost, Flyback, Forward
Voltage - Breakdown:	--
Internal Switch(s):	No
Output Isolation:	--
Part Status:	Obsolete
Packaging:	Tube

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UCC2804D/81221G4 application field and working principleThe UCC2804D/81221G4 AC/DC converter is a highly efficient power management integrated circuit that is used by power engineers to help protect sensitive electronic devices from surges and overvoltages, while also providing a highly efficient and accurate power conversion solution. This versatile piece of power management technology can be used for both home and industrial purposes.The UCC2804D/81221G4 is specifically designed to provide reliable, low-noise power conversion. This AC/DC converter is capable of producing a continuous output voltage of 12V or 28V depending upon the application. It is typically used as a secondary source of power, making it an ideal choice for applications that require a reliable, efficient power source.The UCC2804D/81221G4 AC/DC converter utilizes an advanced switching-converter design, utilizing a switching frequency of up to 1.5MHz. This allows the power conversion process to be accurately and reliably performed with minimal energy loss. The UCC2804D/81221G4 converter is designed for high-reliability applications and is capable of delivering a continuous output current of up to 3.3A.The key component of the UCC2804D/81221G4 AC/DC converter is the switching transistor. The switching transistor is used to enter the converter into the power conversion cycle and provide comparator trigger signals to terminate the cycle. The transistor also supplies bias current to the remaining circuit components through low-voltage power supply pins.The UCC2804D/81221G4 AC/DC converter contains a well-designed Zero-Crossing detect circuit which senses the zero crossing of the line voltage. This helps the converter to maintain a constant output voltage by compensating for the line voltage changes. The UCC2804D/81221G4 AC/DC converter also contains circuit protection components such as an over-current protection circuit and a positive temperature coefficient thermistor.In addition to the output of the UCC2804D/81221G4 AC/DC converter, the device also contains a voltage stabilizing circuit. This provides a stable DC bus voltage, even when the input voltage fluctuates. This ensures that the output is consistently maintained, regardless of the input voltage fluctuations.The UCC2804D/81221G4 AC/DC converter is a highly reliable and efficient power conversion solution. It is suitable for applications such as personal electronics,Home entertainment systems, industrial equipment and automotive electronics. It has become increasingly popular in today’s market as it offers an alternative to traditional power supplies. The UCC2804D/81221G4 AC/DC converter is a great option for those who are looking for a high-quality and efficient alternative to traditional power supplies.

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