UC2842ADTR

Frequency - Switching:	Up to 500kHz
Base Part Number:	UC2842A
Supplier Device Package:	14-SOIC
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Frequency Control
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	96%
Series:	--
Voltage - Supply (Vcc/Vdd):	10 V ~ 30 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost, Buck, Buck-Boost, Flyback, Forward
Output Configuration:	Positive
Function:	Step-Up, Step-Down, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The UC2842ADTR is a type of DC-DC switching controller, a two-terminal device that regulates the output voltage of a switching circuit by generating a feedback signal. It is designed for use in applications where the device must be able to precisely control the output voltage and maintain it in the presence of varying loads including motor starting, and dynamically changing loads.The UC2842ADTR has an adjustable output current and voltage range and is capable of providing precise output remoted from the load and/or the source. It can also be used in fans, pumps, remote sensing and linear light dimmers, to name a few.When the output voltage is low, the device senses the low voltage point and increases the duty cycle of the pulse-width-modulating (PWM) signal. The duty cycle of the PWM signal is periodically adjusted by the integrated error amplifier. As the output voltage increases, the duty cycle decreases until the output voltage is regulated to its rated value. The voltage regulation is not affected by the changing parameters of the switching circuit.The device also features a power on reset circuit that enables proper start up of the control loop even in the presence of large capacitors. This feature is used to reduce the turn-on surge of the current comparator.The UC2842ADTR also includes a precision reference voltage, temperature compensation, slew rate controls and thermal protection circuitry. It is packaged in an 8-pin PDIP, SOIC or MSOP package, with the MSOP variant being the most popular due to its small size and the fact that it is lead-free.The UC2842ADTR is ideal for applications which require precise control over the output voltage, such as motor speed control, process control, consumer electronics, solar inverters and AC-DC power supplies. It can also be used in motor starters, power supplies, motor drives, and consumer appliances. In addition, it may be used in lighting control systems, such as LED lights, fluorescent lights, and street lights.The UC2842ADTR is easy to use, with no external components needed. The integrated temperature compensation and power on reset circuit allows the design to be resilient to temperature variations and EMC disturbances. The device provides an adjustable output current and voltage range, and is capable of providing precise output down to its rated value.Overall, the UC2842ADTR is a versatile DC-DC switching controller that offers precise voltage regulation, power on reset functionality and temperature compensation. It is ideal for applications which require precise control over the output voltage, and is packaged in an 8-pin PDIP, SOIC or MSOP package.

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