UC3875DWP

Duty Cycle:	100%
Base Part Number:	UC3875
Mounting Type:	Surface Mount
Supplier Device Package:	28-SOIC
Package / Case:	28-SOIC (0.295", 7.50mm Width)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Frequency Control, Soft Start, Sync
Fault Protection:	Current Limiting
Frequency - Switching:	1MHz
Series:	--
Voltage - Supply (Vcc/Vdd):	9.5 V ~ 20 V
Voltage - Start Up:	10.75V
Topology:	Full-Bridge
Voltage - Breakdown:	--
Internal Switch(s):	--
Output Isolation:	Non-Isolated
Part Status:	Active
Packaging:	Tube

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

UC3875DWP PMIC - AC DC Converters, Offline Switchers

UC3875DWP（Universal Controller 3875 Device with Power Supply）is a revolutionary power supply controller designed for middle-power applications that require strict performance. Utilizing a 4-switch flyback topology, this device is well suited for a variety of primary-side-regulated AC/DC switch mode power supplies. The UC3875DWPrequires only the minimal outside components,thus reducing the cost of implementation. The UC3875DWP is ideal for applications operating under cost pressures such as adapter and non-PFC application.The UC3875DWP is capable of providing a system solution in power output up to 120W of output power. The low cost, low component count, high performance, and packaging flexibility make the UC3875DWP one of the most versatile power converters available today.

Application Field

The UC3875DWP is ideal for state-of-the-art AC/DC converters and switchers. It is a universal controller, capable of providing designs for various power levels up to 120 watts. The UC3875DWP is designed for potential applications in consumer electronic and home appliance products. Some of the applications that this device can potentially cover include (but are not limited to) LV adapters, LCD/LED TV, PC adapters and chargers, HDD and PSU, Vacuum Cleaners, Set Top Boxes, and Industrial ElectronicsProducts powered by the UC3875DWP need to only have the minimum components, thus reducing the cost of implementation.

Working Principle

UC3875DWP is designed for the flyback topology. A flyback converter is a type of switched-mode power supply that uses a transformer to isolate the output of the circuit. At its most basic, the flyback converter consists of four components: an inductor, a diode, a switch, and a capacitor. The switch is cycled on, allowing current to flow through the inductor.When the switch is opened, the current stored in the inductor is then sent to the load, providing the output voltage and current needed to power the load. At the same time, the inductor\'s collapsing magnetic field then charges the output capacitor, providing the needed power to sustain the load. This process is repeated as long as the output voltage is above the desired level.The UC3875DWP ensures the steady and reliable speed of operation that is necessary while avoiding any premature dying of components due to the high current and voltages. The controller also includes a built-in soft-start function that helps minimize current surge during start-up, as well as over-voltage protection and input voltage range protection to further add to the system\'s level of safety and reliability.These performance characteristics are further supported by various other features including error amplifier with under voltage lockout, preemptive protection against fault conditions, cycle-by-cycle current limit mechanism, and current mode control.By integrating so many features and performance characteristics, the UC3875DWP is one of the most powerful and reliable PMICs available today.

Conclusion

The UC3875DWP is a revolutionary power supply controller designed for middle-power applications that require strict performance. With features like integrated soft start, low component count, power output up to 120W of output power, and flexible packages, the UC3875DWP is ideal for AC/DC converters and offline switchers. With its high level of performance and versatility, the UC3875DWP is capable of providing state-of-the-art designs in various applications ranging from consumer electronics, home appliances, and industrial electronics.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description