STMicroelectronics

LF33CV-DG

LF33CV-DG Description

The LF33CV-DG is a linear regulator IC designed by STMicroelectronics, offering a fixed output voltage of 3.3V and a maximum output current of 500mA. This regulator is housed in a TO220 package and is suitable for through-hole mounting, making it ideal for applications requiring robust and reliable power management solutions. Despite being marked as obsolete, the LF33CV-DG continues to be a reliable choice for its specific voltage and current requirements.

LF33CV-DG Features

• Output Type: Fixed 3.3V output voltage, ensuring stable power supply for sensitive electronic components.
• Input Voltage Range: Capable of handling input voltages up to 16V, providing flexibility in power source options.
• Output Current: Delivers a maximum output current of 500mA, suitable for driving a variety of low-power devices.
• Low Dropout Voltage: With a maximum dropout voltage of 0.7V at 500mA, the LF33CV-DG maintains high efficiency even under varying load conditions.
• Protection Features: Over-current and over-temperature protection ensure the regulator's longevity and reliability in demanding environments.
• Low Quiescent Current: A quiescent current of just 1mA minimizes power consumption, making it ideal for battery-powered applications.
• High PSRR: A power supply rejection ratio (PSRR) of 80dB at 120Hz and 65dB at higher frequencies ensures minimal noise and ripple in the output voltage.
• Compliance: The LF33CV-DG is REACH unaffected and ROHS3 compliant, adhering to stringent environmental and safety standards.
• Moisture Sensitivity Level: MSL 1 (Unlimited) indicates that the component is not sensitive to moisture, enhancing its durability in various operating conditions.

LF33CV-DG Applications

The LF33CV-DG is well-suited for a range of applications where a stable 3.3V supply is required. Its low dropout voltage and high PSRR make it particularly effective in applications such as:

• Embedded Systems: Providing a stable power supply for microcontrollers, sensors, and other low-power devices.
• Communication Equipment: Ensuring reliable power for RF modules and other communication components.
• Consumer Electronics: Suitable for portable devices where low power consumption and high efficiency are crucial.
• Industrial Control Systems: Offering robust power management for PLCs, actuators, and other industrial components.

Conclusion of LF33CV-DG

The LF33CV-DG from STMicroelectronics is a versatile linear regulator that delivers a stable 3.3V output with a maximum current of 500mA. Its low dropout voltage, high PSRR, and protection features make it a reliable choice for a variety of applications. Despite its obsolete status, the LF33CV-DG remains a valuable component for engineers seeking a dependable power management solution. Its compliance with environmental and safety standards further enhances its suitability for modern electronics.