LM2594HVN-ADJ/NOPB

Voltage - Output (Min/Fixed):	1.2V
Base Part Number:	LM2594
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	150kHz
Current - Output:	500mA
Voltage - Output (Max):	57V
Series:	SIMPLE SWITCHER®
Voltage - Input (Max):	60V
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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LM2594HVN-ADJ/NOPB Application Field and Working PrincipleThe LM2594HVN-ADJ/NOPB from Texas Instruments is a high voltage adjustable switch mode voltage regulator intended for use in a wide variety of applications. It is capable of operating from input voltages from 3 V to 40 V and providing an adjustable output voltage of up to 40 V. It is a suitable replacement for linear regulators in applications requiring high efficiency and low noise due to its low voltage drop and low quiescent current. Additionally, it features built-in current and thermal overload protection as well as soft-start and adjustable frequency operation.The LM2594HVN-ADJ/NOPB is a part of PMIC – Voltage Regulators – DC DC Switching Regulators, a type of circuit in which an input voltage waveform is used to generate one or more output voltage waveforms with a constant duty cycle ratio between the two waveforms. The circuit is designed to minimize losses while allowing the output waveform to maintain a constant amplitude over a wide range of operating temperatures and input voltage levels. The design of the circuit is based on the principle of switching regulators which use high frequency switching to convert an input voltage to a higher voltage of the same waveform.The LM2594HVN-ADJ/NOPB is a “buck switching regulator” meaning that it is capable of converting a higher input voltage to a lower output voltage. The circuit achieves this by using a “buck” topology in which two MOSFETs are used to regulate the current flow through the inductor. The frequency of the switching operations can be adjusted from 100kHz to 500kHz to allow for different load conditions and switching speeds.The purpose of the voltage regulator is to provide a stable output voltage over a range of input voltages. The LM2594HVN-ADJ/NOPB is capable of adjusting the output voltage within a specified range in order to match the voltage requirement of the application. For this purpose, the adjustable output is fed back to the reference pin of the device. This reference voltage is compared to an internal voltage reference and the output voltage is adjusted accordingly.The LM2594HVN-ADJ/NOPB is capable of providing power up to 12 A at an adjustable output voltage of up to 40 V in an ambient temperature range of −40 to +85 °C. It is designed to be used in applications such as amplifier power supplies, industrial displays, battery charging systems and point-of-load applications.Apart from its adjustable output, the device also features current and thermal over-load protection as well as soft-start and adjustable frequency operation. Additionally, it is capable of operating over a wide temperature range and provides high efficiency over a wide range of load conditions.To sum up, the LM2594HVN-ADJ/NOPB from Texas Instruments is a high voltage adjustable switch mode voltage regulator intended for use in a wide variety of applications. It is capable of providing power up to 12 A at adjustable output voltages of up to 40 V in an ambient temperature range of −40 to +85 °C. Moreover, the device features built-in current and thermal overload protection as well as soft-start and adjustable frequency operation. Therefore, this device is a suitable replacement for linear regulators in applications requiring high efficiency and low noise due to its low voltage drop and low quiescent current.

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