LM2576HVSX-12/NOPB

Voltage - Output (Min/Fixed):	12V
Base Part Number:	LM2576
Supplier Device Package:	DDPAK/TO-263-5
Package / Case:	TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	52kHz
Current - Output:	3A
Voltage - Output (Max):	--
Series:	SIMPLE SWITCHER®
Voltage - Input (Max):	60V
Voltage - Input (Min):	4V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LM2576HVSX-12/NOPB Application Field and Working Principle

The LM2576HVSX-12/NOPB is a monolithic integrated high voltage DC/DC Step Up converter. It is part of the family of PMIC Voltage Regulators that are DC/DC Switching Regulators. It is designed for use in low voltage regulated DC/DC step up conversions. The device is made up of an internal fuse, a high voltage, low power voltage reference and an internal error amplifier. The device is ideal for applications requiring an up to 6A of output current and an up to 40V output voltage. The device includes current and thermal protections. The converter has two low impedance footprints: one in parallel and the other in series providing minimal switching losses and increased efficiency. It also includes a wide array of operating modes allowing the user to easily select the required functionality. The device is composed of a gate driver, a high voltage output stage, an overvoltage controller and an internal oscillator. The gate driver, output stage and overvoltage controller are designed to reduce the power dissipation and provide high efficiency. The internal oscillator provides the clock signal for the switching circuit. The clock frequency is internally programmable and can be changed by the user as needed. The device also includes comprehensive fault protection and over current limiting, ensuring that the device operates safely.When the device is first activated, the input voltage is sensed by the internal error amplifier and the internal oscillator is enabled. The user then adjusts the clock frequency and the operation mode as needed. The device operates at a frequency determined by the user. The device then uses the internal comparator and error amplifier to create a PWM signal. The PWM signal is then used to modulate the output voltage produced. The higher the PWM duty cycle, the higher the output voltage will be.The output voltage produced is then sent to the output stage where it is then amplified and regulated. The output stage is responsible for regulating and providing the correct output voltage for the application. The output voltage is then sent to the load and the current level is detected by the current limiter. This allows the device to accurately regulate the output current. The device is capable of delivering high efficiency while operating with a wide range of input and output voltages. This makes it ideal for applications such as energy harvesting and DC/DC conversion in the telecommunications industry. In summary, the LM2576HVSX-12/NOPB is a member of PMIC Voltage Regulators family. It is a DC/DC Step Up converter that is capable of providing up to 40V as well as an output current up to 6A. The device is equipped with ergonomic design, easy to use operation modes and high efficiency. This makes it an ideal device for various applications such as energy harvesting and telecommunications.

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