STMicroelectronics

LM258DT

The LM258DT is a high-voltage, high-current step-down switching regulator from STMicroelectronics. It is designed to provide a stable and efficient power supply for a wide range of applications that require a regulated output voltage.

Description:

The LM258DT is a monolithic integrated circuit that provides all the active functions for a step-down switching regulator, except the input filter capacitors and output inductor. It is available in a compact SOIC-8 package.

Features:

1. Wide input voltage range: The LM258DT can operate from input voltages as low as 4.75V and as high as 45V, making it suitable for a wide range of power supply applications.
2. High output current: The LM258DT is capable of delivering up to 2A of continuous output current, making it suitable for high-current applications.
3. Low dropout voltage: The LM258DT has a low dropout voltage of 0.3V at full load, which ensures high efficiency and stable output voltage even under heavy load conditions.
4. High efficiency: The LM258DT operates with high efficiency, up to 95%, due to its synchronous rectification mode of operation.
5. Thermal shutdown protection: The LM258DT features thermal shutdown protection to prevent damage in case of overheating.
6. Small size: The LM258DT is available in a compact SOIC-8 package, making it suitable for space-constrained applications.

Applications:

The LM258DT is suitable for a wide range of applications that require a regulated output voltage, such as:

1. Power supplies for portable electronic devices, such as smartphones, tablets, and laptops.
2. Power supplies for industrial and automotive applications, such as motor controllers and battery chargers.
3. Power supplies for LED lighting applications, such as streetlights and indoor lighting systems.
4. Power supplies for medical devices, such as hearing aids and portable medical instruments.
5. Power supplies for communication systems, such as routers, modems, and base stations.

In summary, the LM258DT from STMicroelectronics is a high-voltage, high-current step-down switching regulator that offers a wide input voltage range, high output current, low dropout voltage, high efficiency, and thermal shutdown protection. It is suitable for a wide range of applications that require a regulated output voltage, including portable electronic devices, industrial and automotive applications, LED lighting, medical devices, and communication systems.