UC2573DTR

Frequency - Switching:	100kHz
Base Part Number:	UC2573
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Current Limit, Ramp
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	92%
Series:	--
Voltage - Supply (Vcc/Vdd):	4.75 V ~ 30 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to UC2573DTRUC2573DTR is a monolithic integrated circuit (IC) of pulse width modulator (PWM) that is used in step-down switching regulator system. This switch mode power supply (SMPS) controller has high-efficiency, low consumption, and small size, resulting in a lower cost of implementation. The UC2573DTR is primarily aimed at power supplies of 5V – 24V with low loads.Application Fields of UC2573DTRThe UC2573DTR can be mostly applied in a variety of areas. These uses can be generally divided into five categories, which are: - Home appliances- Medical equipment- Battery charger- Automotive- Computers and peripheralsIn the home appliances category, UC2573DTR can be used to provide the required power to Television sets, air conditioning systems, and lighting products as it achieved higher efficiency and more power in a low price.In medical equipment and related technology, UC2573DTR can also be used to provide power for medical equipment such as adjustable beds, imaging scanners, medical monitoring tools and medical beds.In the battery charger category, UC2573DTR is commonly utilized for the charging of mobile phones, laptops and cameras.In the automotive industry, UC2573DTR can be used to provide power to fuel injection, car audio systems and other automotive electronics.Lastly, in computers and peripherals, UC2573DTR can be used to provide power to computer monitors, disk drives, DVD players, gaming consoles and many other kinds of peripheral equipment.Working Principle of UC2573DTRThe basic working principle of UC2573DTR is to control a transistor switching converter that is able to convert an input DC voltage to an output DC voltage of different magnitude. It is basically a pulse width modulation (PWM) controller that provides a steady voltage on the output of you system in spite of the fluctuations seen in the input voltage.The IC basically takes in an input voltage, compares it with its internal reference voltage and then perceives the error voltage. This error voltage drives a pulse width modulated control which actuates the top switch of the switching converter. This control drives the FET (field effect transistor) according to the switching signal received from the control block. All this is done in order to vary the output voltage in response to changes in the input voltage.ConclusionUC2573DTR is a monolithic integrated circuit (IC) used in pulse width modulator (PWM) as a stepdown switching regulator system which provides higher efficiency and more power at a low price. UC2573DTR can be applied in a variety of areas such as home appliances, medical equipment, battery charger, automotive, and computers and peripherals. Its working principle is to control a transistor switching converter that is able to convert an input DC voltage to an output DC voltage of different magnitude. In short, UC2573DTR is an effective and efficient switching regulator IC that is ideal for a variety of applications for both consumer and industrial purposes.

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