L4987CPT33

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The L4987CPT33 is a cost-effective, low-power linear voltage regulator that offers a wide variety of features and performance characteristics, making it the ideal choice for many applications. This device is designed to provide stable output voltages of 3.3V or 5V and is optimized for low-noise operation and low power consumption in a wide range of applications.The L4987CPT33 offers excellent protection features including an output overvoltage protection circuit, a thermal shutdown circuit, and a wide input voltage range up to 24V. This device also features a programmable soft start timing and an integrated power- MOSFET for better thermal performance. To protect against reverse-battery connection and fault conditions, the L4987CPT33 has a built-in reverse current protection circuit.In terms of performance, the L4987CPT33 offers excellent line and load regulation, transient response, and outputs extremely low levels of noise and ripple, making it suitable for use in noise-sensitive applications. Additionally, the device has a wide operating temperature range of -40 to 85°C, making it suitable for a variety of applications.The L4987CPT33 is a linear voltage regulator that works by converting a higher input voltage to a lower, regulated output voltage. It uses an integrated voltage reference, pass transistor and feedback network to achieve good regulation and minimal noise. The reference voltage is adjustable via an external resistor and can be set to 3.3V or 5V to meet the needs of different system requirements.The pass transistor is an N-channel MOSFET, which is effectively an efficient amplifier for the lower voltage and also helps to dissipate power, resulting in a much cooler operation. To protect from damage from output overvoltages, the device includes an Over Protect circuit. This circuit will limit the output to a safe level when the output voltage exceeds the set limit by more than 10%.The L4987CPT33 also includes a power-MOSFET, which switches the output on and off when the input voltage exceeds the preset voltage. This is preferable in applications such as laptops or tablets that require a low power consumption when the device is sleeping. The integrated power-MOSFET also helps to reduce power dissipation, which means that the device becomes much more efficient.Finally, a soft start circuit helps to protect the output components during power-up by slowly ramping up the output voltage so that components are not subjected to large in-rush currents. This circuit can be programmed with an external resistor.In conclusion, the L4987CPT33 is a cost-effective, low-power linear voltage regulator that offers a wide range of features for many applications. It offers excellent protection features, low noise operation and excellent line and load regulation and transient response. With its wide operating temperature range and integrated power-MOSFET, this device is ideal for use in noise-sensitive applications, laptops and tablets, and other applications requiring low power and efficient operation.

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