UC3827DWTR-1

Frequency - Switching:	220kHz
Base Part Number:	UC3827-1
Supplier Device Package:	24-SOIC
Package / Case:	24-SOIC (0.295", 7.50mm Width)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Frequency Control, Ramp, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	91%
Series:	--
Voltage - Supply (Vcc/Vdd):	7.6 V ~ 20 V
Output Phases:	1
Number of Outputs:	3
Topology:	Buck, Full-Bridge, Push-Pull
Output Configuration:	Positive
Function:	Step-Down, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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UC3827DWTR-1 is a high-efficiency and high-performance current-mode controller in Pulse-width Modulated (PWM) DC-to-DC converters. It is designed to provide a stable and reliable Regulated Power Supply (RPS) or system power solution by utilizing Pulse Width Modulated (PWM) control to reduce system cost, size and weight while enhancing efficiency and performance.The UC3827DWTR-1 integrated circuit (IC) is designed to deliver high accuracy current-mode control and can be configured to maintain constant output supply voltage or constant output current. It is a part of DC-DC converters family, which is classified under PMIC -> Voltage Regulators -> DC DC Switching Controllers.The UC3827DWTR-1 application field includes any engineering project that requires voltage regulation at a steady and reliable output, such as switching power supplies, boost converters and inverters. The application examples of this voltage controller IC also include battery driven equipment, and systems that need power management (e.g. telecom, anti-simulations)This IC operates at fixed frequency which includes a triplen output enable, a bootstrap voltage switch, and a under voltage lockout feature to ensure the stable and reliable performance of the system and maintain the accuracy of the given output voltage. As such, the major working principle of the UC3827DWTR-1 is to output a voltage which is lower than the input voltage while providing the same amount of power to the system. For this to happen, it uses a closed loop system to sense and measure the output voltage and adjust the current accordingly. The short circuit protection feature of this IC helps to protect the system by automatically turning off the output voltage in the event of a short circuit. This IC also includes a thermal protection circuit which will shut down the system when it becomes too hot. The UC3827DWTR-1 also includes other important features such as: a programmable soft start time, a low feed-forward signal, and a selectable ripple rejection filter sensitivity. This IC has a very low power dissipation and is able to achieve an efficiency of greater than 90%. Using this IC, the user can easily configure the output voltage and current levels to get the desired result. Moreover, the oscillator frequency of this IC can be easily tuned for optimum performance. Lastly, the UC3827DWTR-1 has a wide input voltage and temperature range, which makes it suitable for use in a variety of applications and conditions. In conclusion, UC3827DWTR-1 is a highly accurate and reliable current mode controller with a wide range of features and functions. It provides accurate voltage regulation with efficiency levels that are higher than 90%, while being able to operate in a variety of conditions. This makes it an ideal choice for any engineering system that needs a stable and reliable power solution.

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