Texas Instruments

LMS1585ACT-1.5

LMS1585ACT-1.5 Description

The LMS1585ACT-1.5 is a linear regulator IC designed by Texas Instruments, offering a fixed output voltage of 1.5V and a maximum output current of 5A. This device is housed in a TO220-3 package, making it suitable for through-hole mounting. It features a maximum input voltage of 13V and a dropout voltage of 1.4V at 5A, ensuring efficient power regulation even under high load conditions. The regulator is designed to operate within a temperature range of 0°C to 125°C, making it suitable for a variety of industrial and commercial applications.

LMS1585ACT-1.5 Features

• Output Type: Fixed, providing a stable 1.5V output.
• Input Voltage Range: Up to 13V, offering flexibility in power supply requirements.
• Output Current: Capable of delivering up to 5A, making it suitable for high-current applications.
• Number of Regulators: Single regulator design simplifies circuit design and reduces component count.
• Output Configuration: Positive output voltage, ideal for most electronic systems.
• Supply Current: Maximum of 13 mA, ensuring low power consumption.
• Product Status: Obsolete, but still available for legacy systems.
• REACH Status: REACH unaffected, ensuring compliance with environmental regulations.
• Moisture Sensitivity Level (MSL): Level 1 (Unlimited), suitable for storage and handling without special precautions.
• Operating Temperature: 0°C to 125°C, ensuring reliability in a wide range of operating conditions.
• Quiescent Current (Iq): 7 mA, contributing to high efficiency even at low load conditions.
• Power Supply Rejection Ratio (PSRR): 60 to 72 dB at 120Hz, ensuring excellent noise rejection.
• Protection Features: Over-current and over-temperature protection, enhancing reliability and safety.
• Package: Tube, suitable for through-hole mounting and easy integration into existing designs.

LMS1585ACT-1.5 Applications

The LMS1585ACT-1.5 is ideal for applications requiring a stable and reliable power supply with a fixed output voltage. Its high output current capability makes it suitable for driving high-power devices such as microcontrollers, FPGAs, and other digital circuits. The regulator's low dropout voltage ensures efficient power conversion, even when the input voltage is close to the output voltage. This makes it particularly useful in battery-powered systems where the input voltage may drop as the battery discharges.

Specific use cases include:

• Industrial Control Systems: Providing stable power to control boards and sensors.
• Telecommunications: Powering communication modules and base stations.
• Automotive Electronics: Supplying power to electronic control units (ECUs) and infotainment systems.
• Consumer Electronics: Driving power-hungry components in devices such as gaming consoles and high-end audio equipment.

Conclusion of LMS1585ACT-1.5

The LMS1585ACT-1.5 is a robust and reliable linear regulator designed for applications requiring a stable 1.5V output and up to 5A of current. Its low dropout voltage and high PSRR make it an excellent choice for systems where efficiency and noise rejection are critical. Despite being marked as obsolete, the LMS1585ACT-1.5 remains a viable option for legacy systems and new designs where its unique features and performance benefits are required. Its through-hole package and comprehensive protection features further enhance its suitability for a wide range of industrial and commercial applications.