UCC28C41DGKRG4

Frequency - Switching:	--
Base Part Number:	UCC28C41
Supplier Device Package:	8-VSSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 105°C (TJ)
Control Features:	Frequency Control
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	49%
Series:	--
Voltage - Supply (Vcc/Vdd):	6.6 V ~ 18 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost, Flyback, Forward Converter
Output Configuration:	Positive
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The UCC28C41DGKRG4 is a Pulse Width Modulator (PWM) digital control integrated circuit (IC) made by Texas Instruments. It is a type of switched-mode power supply (SMPS) controller designed to control the current in a switched capvoltage regulator or a buck converter, allowing the output voltage to be controlled with a minimum of power loss. The UCC28C41DGKRG4 is also used to provide efficient power for other applications, such as LED lighting, telecom power supplies and battery chargers.The UCC28C41DGKRG4 is a monolithic integrated circuit (IC) formed on a single silicon die and packaged in a single chip package. It is a high-speed, high-accuracy Pulse Width Modulation (PWM) controller, with an input resolution of 8 bits. The device\'s output frequency can be programmed in the range of 42kHz to 4MHz.The UCC28C41DGKRG4 is designed to control the current in a switched capvoltage regulator or a buck converter. It uses a switching current source to control the voltage feedback loop, and by controlling this current, the output voltage can be adjusted to the desired value with a minimum of power loss. The device has an under-voltage lockout (UVLO) circuit to prevent operation with insufficient supply voltage, thermal shutdown and over-current protection, and a regulated output voltage of 3.3V. This is provided by an internal, voltage-regulated, high-source-current reference circuit, which is used to generate the reference voltage for the adjustable feedback point.The switching controller uses voltage-mode control to ensure that the output voltage is kept within a specified tolerance. It uses a ramp-up/down comparator circuit to generate a PWM switching signal that is synchronised to an internal oscillator. The PWM signal is applied to a drive circuit, which turns the PWM signal into a pulse width modulated (PWM), self-oscillating switching current source. This switching current source then drives the external output FETs, supplying the load current.When operating, the UCC28C41DGKRG4 takes into account several parameters, such as input voltage, output current, and output voltage, in order to achieve an efficient output voltage regulation. It is designed to provide a smooth and efficient switching of the current source during voltage transients, as well as during continuous operation.In conclusion, the UCC28C41DGKRG4 is a versatile DC/DC converter digital control IC designed to control the current in a switched capvoltage regulator or a buck converter. It uses voltage-mode control and PWM current source to achieve efficient output voltage regulation. It has a wide range of features, including under-voltage lockout, thermal shutdown, over-current protection, and adjustable feedback point. As such, the UCC28C41DGKRG4 is an ideal choice for applications such as LED lighting, telecom power supplies and battery chargers.

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