LA5759-MDB-E

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LA5759-MDB-E is a highly integrated switching DC/DC Regulator. It is a high-performance, low-noise, low-cost, step-up/step-down DC/DC Regulator with a built-in current limit circuit and undervoltage protection circuit. It enables an output voltage to be accurately regulated from a wide input voltage range. Due to its advanced regulating system, it always performs its excellent operation for any given applications.

The LA5759-MDB-E DC/DC switching regulator applies a pulse width modulation (PWM) technique to its internal circuit to automatically regulate output voltage and achieve a higher conversion efficiency. Its high-efficiency switching power FET enables power efficiency up to 90%, allowing a wide input voltage range. It is designed with over-current protection and undervoltage protection to protect its circuit from overload and overvoltage damage or defective components.

The LA5759-MDB-E DC/DC switching regulator is ideal for wide applications such as battery-powered systems, handheld electronic devices, smart home products, portable electronic equipment, and industrial systems. It is appropriate for use in a variety of power supply systems that require higher switching efficiency with better voltage stability. It also works well for applications that require minimal noise (or low EMI radiation), current limiting, and under-voltage protection.

Principle of Operation

The LA5759-MDB-E operates by switching the current on or off at a fixed frequency determined by an external capacitor. The duty cycle of this Duty Cycle Control (DCC) operation is used to regulate the output voltage of the device. It is designed with over-current protection and under-voltage protection to protect its circuit from overload and overvoltage damage or defective components. It works by using an on-chip error amplifier to monitor the output voltage, and then uses the duty cycle of the internal PWM control circuit to adjust the output voltage accordingly.

The LA5759-MDB-E DC/DC Regulator is equipped with an advanced frequency modulation system which allows it to maintain a stable output frequency when the input voltage changes. This means that the output voltage of the device remains more stable even in the event of input voltage variation, ensuring greater accuracy and a smoother output. This also helps to improve efficiency since the power MOSFET used in the device is switched on/off less often. The device has an excellent transient response, allowing a fast and smooth voltage rise time.

The LA5759-MDB-E DC/DC switching regulator is ideal for high efficiency, high power-density requirements. Its high conversion efficiency, low EMI emission and excellent line/load transient response make this device the ideal choice for a variety of applications. It is smaller in size than other available devices, allowing it to be fitted into even the most space-limited environments. Its low operational noise and high-efficiency, power FET make it suitable for use in battery powered applications, smart home products, and portable electronic equipment. In addition, the integrated over-current protection and under-voltage protection provide further safety for all applications.

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