BD33KA5WF-E2

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BD33KA5WF-E2 Application Field and Working Principle

BD33KA5WF-E2 is a three-terminal single positive voltage linear regulator designed to meet the growing demand for higher current and higher efficiency. It is suitable for a wide range of applications, such as stand-alone power supply, test and measurement equipment, PC auxiliary board and communication, as well as car and battery-powered equipment.

BD33KA5WF-E2 is designed with an advanced BiCMOS process with built-in internal current and temperature limiters to provide high-performance, high-efficiency and low-voltage linear regulated power. It is suitable for off-line applications with input range up to 30V, allowing wide input range in a very small package. The output voltage range is from 1.2V to 5V and the output current can reach up to 3A.

Working Principle

BD33KA5WF-E2 is a three-terminal linear voltage regulator, meaning it uses the series voltage drop and current to regulate the output voltage and current stability in order to produce the required power. It has a built-in power transistor and a reference resistor, which is connected between the input and output terminals. The voltage differential between the input and output terminals is used as the control input of the power transistor.

The regulator is designed to provide a well-regulated output voltage by controlling the current passing through the power transistor and the reference resistor. The regulator is designed to manage the current passing through it to ensure the output voltage is regulated and stable. If the output is higher than the required voltage, the current is reduced; if the output is lower than the required voltage, the current is increased. This mechanism enables a regulated output voltage even when the input power supply varies.

Features

• 3A continuous output current
• Input voltage range up to 30V
• High-frequency, low-noise operation
• Wide operating temperature range of -40°C to +125°C
• Built-in current and temperature limiters
• High accuracy: ±1%
• Low dropout voltage
• Output voltage range: 1.2V to 5V

In summary, the BD33KA5WF-E2 is a three-terminal single positive voltage linear regulator designed to meet the growing demand for higher current and higher efficiency. It is suitable for a wide range of applications, providing a well-regulated output voltage even when the input power supply varies.

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