STMicroelectronics

LF33ABPT  

Linear & Switching Voltage Regulators

LF33ABPT Description

The LF33ABPT is a fixed output linear voltage regulator designed by STMicroelectronics, offering a stable 3.3V output voltage with a maximum output current of 500mA. This regulator is housed in a PPAK package, making it suitable for surface mount applications. The LF33ABPT is designed to operate with an input voltage range up to 16V, providing a dropout voltage of 0.7V at 500mA. This low dropout voltage ensures efficient power conversion even at low input-to-output voltage differentials. The regulator features an enable control function, allowing for dynamic power management and reduced power consumption during standby or shutdown states. Additionally, it includes over-current and over-temperature protection features to safeguard the device and connected circuits from damage under abnormal operating conditions. Despite its obsolescence, the LF33ABPT remains a reliable choice for applications requiring a compact, high-performance voltage regulator.

LF33ABPT Features

• Output Type: Fixed at 3.3V, ensuring stable power supply for sensitive electronic components.
• Input Voltage Range: Capable of handling up to 16V, providing flexibility in power source selection.
• Output Current: Delivers up to 500mA, suitable for a wide range of low to medium power applications.
• Low Dropout Voltage: 0.7V at 500mA, enhancing efficiency and reducing power loss.
• Enable Control: Allows for dynamic power management, optimizing system power consumption.
• Protection Features: Over-current and over-temperature protection ensure robustness and reliability.
• Mounting Type: Surface mount in a PPAK package, ideal for compact and space-constrained designs.
• Compliance: REACH unaffected and ROHS3 compliant, adhering to environmental and safety standards.
• Moisture Sensitivity Level: MSL 1 (Unlimited), suitable for various manufacturing environments.

LF33ABPT Applications

The LF33ABPT is well-suited for a variety of applications where a stable and efficient power supply is critical. Its fixed 3.3V output and 500mA current capability make it ideal for powering microcontrollers, sensors, and other low-power electronics. The low dropout voltage and enable control feature are particularly beneficial in battery-powered devices, where maintaining power efficiency and extending battery life are essential. The compact PPAK package and surface mount design allow for easy integration into small form factor devices, such as portable electronics, IoT devices, and wearable technology. Additionally, the over-current and over-temperature protection features make it a reliable choice for applications in harsh environments or where high reliability is required.

Conclusion of LF33ABPT

The LF33ABPT is a versatile and reliable linear voltage regulator that offers a stable 3.3V output with a maximum current of 500mA. Its low dropout voltage and enable control feature make it an efficient choice for applications where power efficiency and dynamic power management are crucial. The compact PPAK package and surface mount design ensure ease of integration into various electronic systems. Despite being marked as obsolete, the LF33ABPT remains a robust and compliant solution for applications requiring a fixed output voltage regulator. Its over-current and over-temperature protection features further enhance its reliability, making it a dependable choice for a wide range of electronic devices.

LF33ABPT Documents

Download datasheets and manufacturer documentation for LF33ABPT

Datasheets :

LF00 Series Datasheet      

HTML Datasheet :

LF00 Series Datasheet