UCC38C42DG4

Duty Cycle:	96%
Base Part Number:	UCC38C42
Mounting Type:	Surface Mount
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Frequency Control
Fault Protection:	Current Limiting
Frequency - Switching:	Up to 1MHz
Series:	--
Voltage - Supply (Vcc/Vdd):	9 V ~ 18 V
Voltage - Start Up:	14.5V
Topology:	Forward
Voltage - Breakdown:	--
Internal Switch(s):	No
Output Isolation:	Isolated
Part Status:	Active
Packaging:	Tube

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UBEC UCC38C42DG4 is a current-mode controller specifically designed for offline switch mode power supply systems. The device features a wide range of operating conditions and is based on sixteen-level current mode control technology. It offers superiorline end transient performance and cost minimization.

The device has three main stages: the current-sense stage, the peak current-mode control stage, and the running current-mode control stage. The current-sense stage measures the actual output current of the converter and is responsible for the main control loops. The peak current-mode control stage controls the peak current of the converter and is responsible for the converter\'s voltage regulation loop. Finally, the running current-mode control stage controls the output frequency of the converter and is also responsible for the converter\'s current regulation loop.In addition to providing excellent line end transient performance and better cost minimization, the UCC38C42DG4 also offers improved light load efficiency, faster transient response, and excellent power factor performance. Moreover, the UCC38C42DG4 comes with an integrated error amplifier and an external voltage reference which allow for tight voltage regulation.The UCC38C42DG4 is suitable for a wide range of applications such as offline AC-DC converters, switch mode power supplies with wide range of operating conditions, and multiple output converters. It is also suitable for noise-sensitive applications such as audio amplifiers, consumer appliances, and others.The UCC38C42DG4 incorporates over-voltage protection, short circuit protection, and thermal protection capabilities. It also integrates hysteretic thermal protection to ensure the device operates within safety margins. The device can handle a wide input voltage range of 80-265 VAC and a wide operating temperature range of -40C to +85C.In summary, the UCC38C42DG4 is a highly versatile current-mode controller featuring superior line end transient performance, low cost, and excellent system performance. It can be used in a wide variety of applications including offline AC-DC and switch mode power supply systems. Furthermore, the device incorporates extensive protections and wide range of operating conditions.

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