TL2575HV-33IKV

Voltage - Output (Min/Fixed):	3.3V
Base Part Number:	TL2575HV-33
Supplier Device Package:	TO-220-5
Package / Case:	TO-220-5 Formed Leads
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	52kHz
Current - Output:	1A
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	60V
Voltage - Input (Min):	4.75V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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TL2575HV-33IKV application field and working principle

Introduction

The TL2575HV-33IKV is a positive, adjustable switching voltage regulator from Texas Instruments that generates a constant and regulated output voltage despite changes in input voltage or load current. It is specifically designed to deliver the industry’s widest output range of 1.8V to 33V with a maximum load current of 4A and a maximum regulator efficiency of 94%. The device features thermal shutdown and current limiting for protection and is suitable for a variety of applications including PC motherboards, disk drives and battery charging systems.

Classification

The TL2575HV-33IKV can be classified as a PMIC (Power Management IC) – Voltage Regulators – DC DC Switching Regulators.

Application Fields

The TL2575HV-33IKV has numerous applications across different industries, but some of the most popular uses include powering computer motherboards, disk drives and battery charging systems in the consumer electronics sector. The device is also used in industrial and automotive applications, especially those requiring high-efficiency, reliable and accurate measurement of power, such as in motor control and automation systems.The TL2575HV-33IKV is particularly popular in applications where a minimum component count is essential. Its wide range of features, combined with its high power efficiency, makes it a great choice for designers looking to reduce component count and bill of materials (BOM).

Working Principle

The TL2575HV-33IKV is a Buck DC/DC Converter, also known as a Step-Down Voltage Regulator, that regulates the output voltage across a load regardless of the input voltage or load current. The device operates by using an input voltage to transform it into a higher-voltage pulsed voltage at the beginning. This pulsed voltage is then fed into a switching FET, which acts as a switch, to produce the required output voltage.The device can be set to a wide range of output voltages to suit different applications by simply changing the control voltage at the feedback pin. A current sensing resistor is also used to limit the output current.The TL2575HV-33IKV also has built-in thermal protection and over-current protection to ensure it can operate safely in hazardous environments. This makes it a popular choice for applications requiring robustness and reliability, such as in motor control systems.

Conclusion

The TL2575HV-33IKV is a positive, adjustable switching voltage regulator from Texas Instruments, designed to deliver a wide output range of 1.8V to 33V. With up to 4A output current and 94% power efficiency, the device is suitable for a wide range of applications, including PC motherboards, disk drives and battery charging systems, as well as industrial and automotive applications. The device works by transforming the input voltage into a higher-voltage pulsed voltage, which is then used to regulate the output voltage. The device also features thermal and current limiting protections for safety.

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