UCC2888DG4

Duty Cycle:	7.6%
Base Part Number:	UCC2888
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:	--
Fault Protection:	Short Circuit
Frequency - Switching:	--
Series:	--
Voltage - Supply (Vcc/Vdd):	6 V ~ 9.3 V
Voltage - Start Up:	8.4V
Topology:	Flyback
Voltage - Breakdown:	--
Internal Switch(s):	No
Output Isolation:	Non-Isolated
Part Status:	Obsolete
Packaging:	Tube

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UCC2888DG4 Application Field and Working Principle

The UCC2888DG4 (UCC) is an application specific integrated circuit (ASIC) device designed for power management applications such as AC-DC converters, offline switchers, and DC/DC converters. It\'s a robust device which can withstand up to 12V input voltage abnormality, a wide operating temperature range (with specified parts ranging from -40°C to +125°C), and has very low quiescent current (<1μA). This makes it an ideal solution for applications such as automotive, lighting, industrial, and consumer.The UCC consists of a single, high-performance CMOS power stage that enables continuous current and load modulation. It also has auto-frequency degradation circuitry and protection circuitry for protection against over-temperature, over-voltage, under-voltage, and load short-circuit conditions.The primary function of the UCC is to regulate the main DC supply for a wide variety of system loads. To do this, it includes a wide range of output power stages, including synchronous buck and boost, non-synchronous push-pull, two-phase flyback, forward converter (with integrated bleeder circuit), and isolated flyback, allowing designers to select the most suitable stage for their application.The UCC also offers precision dynamic current control, allowing designers to quickly and accurately respond to changes in load. The UCC also offers a wide range of current limit and soft-start options, allowing designers to customize the operating characteristics of the device. In addition, the UCC includes superior fault protection, including thermal shutdown and short-circuit protection, to ensure that the power stage remains safe even in extreme operating conditions. The UCC has two main modes of operation. In the constant-voltage mode, the UCC regulates the output voltage by modulating the current sent to the load. The UCC in this mode can regulate the output voltage to a band of 9.5V to 12.5V, with an accuracy of ±2%, over temperature and line variations.In the constant-current mode, the UCC modulates the output voltage to maintain a constant current level at the load. This mode allows the UCC to regulate a maximum output current of 5mA with ±2% accuracy over temperature and line variations.The UCC is also equipped with an integrated compensation network, eliminating the need for external components for voltage loop compensation. This feature simplifies the design procedure and reduces the number of external components required.Overall, the UCC2888DG4 is an ideal solution for a wide range of AC-DC converters, offline switchers, and DC/DC converters. Its robust design and high efficiency make it an ideal choice for a variety of applications requiring reliable and accurate power regulation from 9.5V to 12.5V.

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