LM2574HVN-15/NOPB

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The LM2574HVN-15/NOPB is an advanced, wide input range, monolithic, step-down switch regulator, capable of regulating the voltage from 4.5V to 48V for output voltages of 1.25V to 33V. It is a low noise device, typically featuring a 0.2µF output capacitor and 0.22µF minimum input capacitance, making it suitable for a wide variety of applications. The LM2574HVN-15/NOPB has built-in frequency compensation, linear current limiting and thermal shutdown features. It is capable of delivering 2A of output current and can provide up to 15V of output regulation.

The LM2574HVN-15/NOPB is a highly efficient, multiphase regulator which combines a robust power stage controller and a switching stage driver along with an integrated pre-bias circuitry. This provides improved dynamic range, low noise performance and lower power consumption. The LM2574HVN-15/NOPB includes a wide Vin input range, low output voltage ripple, high switching frequency and low output voltage errors. It is capable of operating at load currents as low as 20mA and up to 2A.

The LM2574HVN-15/NOPB features a PWM operation mode with a 500kHz switching frequency, enabling the conversion of a wide input voltage range into a constant, regulated output voltage. The device also supports a pulse skip mode, hysteretic mode and a pulse frequency modulation (PFM) mode, as well as multiple device synchronization, and so can be used in a wide range of intelligent power systems. The LM2574HVN-15/NOPB also utilizes an internal power FET, an adjustable soft start function and an external shutdown function, providing comprehensive protection and improved stability in demanding applications.

The LM2574HVN-15/NOPB is suitable for use in automotive, communications, storage and a variety of industrial applications, making it an ideal choice for applications that require high efficiency, low voltage ripple and noise, even in harsh temperature environments. The device is available in a variety of package sizes and has an adjustable output voltage that can be programmed from 1.25V to 33V.

The working principle of the LM2574HVN-15/NOPB is relatively simple and easy to understand. The device works by regulating the input voltage through the power stage controller, and then correcting the input voltage through the controller and amplifier, using pulse-width modulation to adjust the output voltage. During the PWM operation, the internal power FET is cycled on and off to regulate the gain. The frequency of the PWM signal is controlled by an internal frequency compensation network. The output voltage is compared to an internal reference voltage and the feedback signal is used to calculate the PWM signal.

The LM2574HVN-15/NOPB is a versatile, low noise and efficient power management device which is suitable for a wide range of applications. Its wide input voltage range, low output voltage errors, adjustable soft start function and multiple device synchronization make it ideal for a variety of applications. Furthermore, its PWM operation mode, pulse skip mode, hysteretic mode and pulse frequency modulation (PFM) mode enable the device to be used in a wide range of intelligent power systems.

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