LF33ABV-DG

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The LF33ABV-DG voltage regulator is a linear voltage regulator which provides an accurate output voltage of 3.3V and current limit of 800 mA.

It belongs to the family of LF33ABV (Output Voltage Adjustable) voltage regulators. These voltage regulators offer output voltage adjustment and remote sensing. The LF33ABV-DG provides 3.3V and is specifically designed for applications where stable voltage and current are required, such as microprocessors, memory and EPROMs, power supplies, transistors, etc.

The LF33ABV-DG voltage regulator offers excellent thermal regulation, a wide operating temperature range and high output current rating. The output voltage is adjustable by means of an external resistor divider. The resistor divider is responsible for setting the output voltage according to the user’s needs. The user can connect additional output capacitors to minimize output noise and AC ripple.

The LF33ABV-DG includes several features such as overcurrent protection and short-circuit protection. The short-circuit protection prevents damage to the device in case of a short-circuit between the output and ground. It also offers current limiting and thermal shutdown. The maximum output current is 800mA.

The LF33ABV-DG has a wide input voltage range of 2.5 to 15V and is designed to provide maximum flexibility for applications where the input voltage varies. The supply voltage can also be regulated by using a series resistor. The parts are also available with a thermal pad for improved thermal dissipation.

Typical applications of the LF33ABV-DG include low dropout linear regulators, power management, microprocessors, memory, EPROMs, loads, switching circuits, power supplies, transistors, etc.

The working principle of the LF33ABV-DG voltage regulator is based on the operation of transistors and diodes. A transistor and a diode are connected in series between the input and output terminals of the voltage regulator and in parallel with the load. The output voltage is determined by the ratio between the resistance values of the resistor and the diode, and the transistor acts as a current limiter.

The voltage regulator is controlled by the error amplifier. When the output voltage is lower than the pre-set voltage, the error amplifier increases the base current of the transistor, thus increasing the output voltage. Conversely, when the output voltage is higher than the pre-set voltage, the error amplifier will reduce the base current of the transistor to decrease the output voltage.

These features combined make the LF33ABV-DG voltage regulator a great choice for many applications that require a stable output voltage and current. It is easy to use and provides high performance with excellent thermal regulation.

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