STMicroelectronics

LM258QT

The LM258QT is a high-quality, integrated circuit (IC) manufactured by STMicroelectronics. It is a step-down switching regulator, also known as a buck converter, designed to provide efficient and stable voltage regulation for a wide range of applications.

Description:

The LM258QT is a compact, 5-pin package that features a high-efficiency, step-down voltage converter. It is designed to accept a wide input voltage range and provide a regulated output voltage to power various electronic devices. The device is available in a small-outline transistor (SOT) package, making it suitable for space-constrained applications.

Features:

1. Wide input voltage range: The LM258QT can accept input voltages from 4V to 40V, making it suitable for various power supply sources.
2. Fixed or adjustable output voltage: The output voltage can be set to a fixed value or adjusted using an external resistor divider.
3. High efficiency: The LM258QT offers high efficiency, typically above 90%, which helps reduce power dissipation and improve overall system performance.
4. Low quiescent current: The device has a low quiescent current, which is essential for battery-powered applications to extend battery life.
5. Protection features: The LM258QT includes over-current protection, over-temperature protection, and short-circuit protection to safeguard the device and the connected components.
6. Small form factor: The compact SOT package allows for easy integration into space-constrained designs.

Applications:

1. Portable electronic devices: The LM258QT can be used to provide regulated power to smartphones, tablets, and other portable electronics.
2. Power supplies: It can be used in battery-powered or AC/DC adapters to provide a stable output voltage for various electronic devices.
3. Industrial equipment: The device can be used in industrial applications where stable and efficient power regulation is required.
4. Medical devices: The LM258QT can be used in medical equipment that requires a stable and regulated power supply.
5. Telecommunication equipment: The device can be used to provide power to telecommunication equipment, such as routers and modems.

In summary, the LM258QT is a versatile and efficient step-down switching regulator that can be used in a wide range of applications requiring stable and regulated power supply. Its compact form factor, high efficiency, and built-in protection features make it an ideal choice for various electronic devices.