LP8725TLX-B/NOPB

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The LP8725TLX-B/NOPB is a special variety of voltage regulator integrated circuit (IC) used in applications such as motor drives, power amplifiers, and LED lighting. The device is designed to provide constant voltage output and maintains a low voltage drop across the power supply circuit. It is designed to offer protection against short-circuit loads, off-load conditions, and positive and negative transients.

Overview of the LP8725TLX-B/NOPB

The LP8725TLX-B/NOPB is an integrated voltage regulator that operates over a wide input voltage range from 4.5V to 24V and delivers a steady output voltage regardless of load conditions. It features an adjustable output voltage from 0.8V to 3.6V. In order to ensure an accurate output voltage, the device features an internal voltage reference as a reference. The device also features low power loss of 30 mW, low noise, and a switching frequency of 1.5MHz.The device also integrates an over-temperature protection circuit that prevent the device from being damaged due to high temperature conditions. The LP8725TLX-B/NOPB also features a built-in soft-start circuit which helps to reduce current surges to protect the internal circuitry and external components.

Applications of the LP8725TLX-B/NOPB

The LP8725TLX-B/NOPB is mainly used in motor drive and power amplifier applications, providing constant voltage output and maintains a low voltage drop across the power supply circuit. It is also used in LED lighting applications that require a stable voltage over a wide range of loads. The device can be used in LCD module drivers and automotive applications. The device can be used in power supplies that require a high degree of power quality, for example, laptop chargers and switched-mode power converters. The device is also suitable for point-of-use applications such as notebook PCs, tablets, and other consumer electronic devices.

Working Principle of the LP8725TLX-B/NOPB

The LP8725TLX-B/NOPB uses pulse width modulation (PWM) to regulate the output voltage. The device contains internal circuitry that monitors the output voltage and compares it with a stored reference voltage. If the output voltage is higher than the stored reference voltage, the device reduces the duty-cycle of the PWM to decrease the output voltage. Conversely, if the output voltage is lower than the stored reference voltage, the device increases the duty-cycle of the PWM to increase the output voltage.In addition to the over-temperature protection circuit, the LP8725TLX-B/NOPB also features extremely low dropout voltage (LDO) to protect the device from short circuit and over-current conditions. It also has an adjustable soft-start circuit which helps to reduce current surges. The LP8725TLX-B/NOPB also uses current mode control to reduce torque ripple and avoid false firing of the power supply by detecting the current load and regulating the PWM duty-cycle accordingly.

Conclusion

The LP8725TLX-B/NOPB integrated voltage regulator ensures an accurate output voltage and provides protection against short-circuit loads, off-load conditions, and positive and negative transients. The device is suitable for applications such as motor drives, power amplifiers, LED lighting, LCD module drivers, and automotive applications. It also features a built-in over-temperature protection circuit and adjustable soft-start circuit for added protection. The device uses pulse width modulation and current mode control to regulate the voltage output and protect the device from false firing and over-current conditions.

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