STMicroelectronics

LD1117AD2MTR

LD1117AD2MTR Description

The LD1117AD2MTR is a linear voltage regulator designed by STMicroelectronics, offering an adjustable output voltage range from 1.25V to 15V with a maximum input voltage of 15V. This regulator is capable of delivering a continuous output current of up to 1A, making it suitable for a wide range of applications requiring stable power supply. The device is housed in a D2PAK package, which is ideal for surface-mount applications and provides excellent thermal performance.

The LD1117AD2MTR features a low dropout voltage of 1.3V at 1A, ensuring efficient power conversion even when the input-to-output voltage differential is minimal. This characteristic is particularly beneficial in applications where the input voltage may be close to the desired output voltage, as it minimizes power dissipation and maximizes efficiency.

LD1117AD2MTR Features

• Adjustable Output Voltage: The LD1117AD2MTR allows for an adjustable output voltage ranging from 1.25V to 15V, providing flexibility to meet various power supply requirements.
• High Current Capability: With a maximum output current of 1A, this regulator can support demanding applications that require significant power.
• Low Dropout Voltage: The maximum dropout voltage of 1.3V at 1A ensures high efficiency, especially in low-voltage applications.
• Thermal Protection: Integrated over-temperature and over-current protection features safeguard the device against thermal runaway and excessive current, enhancing reliability and longevity.
• High PSRR: The regulator boasts a high power supply rejection ratio (PSRR) of 80dB at 120Hz, effectively filtering out noise from the input supply and ensuring a clean output voltage.
• Wide Operating Temperature Range: The LD1117AD2MTR operates reliably within a temperature range of 0°C to 125°C, making it suitable for both commercial and industrial environments.
• Compliance and Packaging: The device is REACH unaffected and RoHS3 compliant, ensuring environmental safety. It is available in a D2PAK package with a tape and reel (TR) format, facilitating easy integration into automated assembly processes.

LD1117AD2MTR Applications

The LD1117AD2MTR is well-suited for a variety of applications where a stable and efficient power supply is critical. Some specific use cases include:

• Consumer Electronics: Ideal for powering electronic devices such as smartphones, tablets, and other portable electronics that require a stable and adjustable voltage supply.
• Industrial Equipment: Suitable for industrial control systems, sensors, and actuators that demand reliable power with minimal voltage fluctuations.
• Telecommunications: Can be used in base stations and other telecom equipment where efficient power management is essential.
• Automotive Electronics: Applicable in automotive systems, including infotainment and control modules, where the regulator's wide operating temperature range and robust protection features are advantageous.

Conclusion of LD1117AD2MTR

The LD1117AD2MTR is a versatile and efficient linear voltage regulator that offers adjustable output voltage, high current capability, and low dropout voltage. Its robust thermal and over-current protection features, combined with a high PSRR, make it a reliable choice for a wide range of applications. Despite being marked as obsolete, the LD1117AD2MTR remains a valuable component for engineers seeking a dependable and efficient power solution. Its compliance with environmental standards and surface-mount packaging further enhance its appeal for modern electronics design.