UCC3802DG4

Duty Cycle:	99%
Base Part Number:	UCC3802
Mounting Type:	Surface Mount
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
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):	No
Output Isolation:	--
Part Status:	Active
Packaging:	Tube

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The UCC3802DG4 is a monolithic IC (integrated circuit) designed to provide boost, flyback, SEPIC, and buck-boost switching solutions. This versatile IC allows for both step-up and step-down voltage conversions and is commonly used when a wide range of input voltages must be adapted to a single regulated output voltage. The UCC3802DG4 is a part of the UCC3802 family, which offers power solutions with a wide range of features like a flexible oscillator frequency, up to 84.5% efficiency, and a high 200kHz switching frequency. All of these features make the UCC3802DG4 a great choice for many offline applications.The UCC3802DG4 comes in a 6-pin, low-profile surface mount package, making it suitable for a variety of applications. Its versatile design makes it suitable for many applications, such as cell phone chargers, portable electronics, laptop adapters, and many more. Working PrincipleThe UCC3802DG4 is a monolithic IC that operates in either a Boost-Flyback configuration or a Buck-Boost configuration. In a Boost-Flyback configuration, the UCC3802DG4 is used to provide a regulated output voltage that is higher than the input voltage. This is achieved by storing energy in a high frequency, large value inductor which is then released through a diode or MOSFET to the output. In a Buck-Boost configuration, the UCC3802DG4 is used to provide an output voltage that is either higher or lower than the input voltage. This is done by automatically switching between two different inductors, one for step-up operation and one for step-down operation, depending on the input voltage. In both configuration modes, an optional external power N-MOSFET, connected to the UCC3802DG4 output, is used to disconnect the output from the IC during periods of no load. The UCC3802DG4 incorporates a range of features to ensure reliable and accurate operation. For instance, it includes protection from undervoltage lockout, overcurrent, and over-temperature situations. The IC also employs ripple current and voltage regulation, as well as programmability for frequency, deadtime, and soft-start.ApplicationsThe UCC3802DG4 offers a wide range of applications such as battery-powered electronic products, chargers and power supplies, LED drivers, and many more. It is a great choice for power conversion applications that require reliable operation, high efficiency, wide input and output range, and low cost solution. Additionally, the UCC3802DG4 is well-suited for applications that require high precision regulation and a wide operating frequency range. The UCC3802DG4’s features make it extremely versatile and ideal for a wide array of applications such as cell phone chargers, audio amplifiers, laptop adapters, and many others. It also offers excellent efficiency, making it suitable for use in applications where longer battery life is desired. ConclusionThe UCC3802DG4 is a versatile and cost-effective monolithic IC which provides robust and reliable power management solutions for a wide range of applications. Its wide input and output range, high efficiency, and programmability make it ideal for many applications such as cell phone chargers, audio amplifiers, laptop adapters, and many more. This chip is a great choice for anyone looking for a cost-effective and reliable solution for their power conversion needs.

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