STMicroelectronics

LDK120C31R

LDK120C31R Description

The LDK120C31R is a high-performance, low-dropout linear regulator designed by STMicroelectronics, a leading manufacturer of power management integrated circuits (PMICs). This device is specifically engineered to provide a fixed output voltage of 3.1V with a maximum output current of 200mA. It is housed in a compact SOT323-5 package, making it suitable for space-constrained applications. The LDK120C31R is designed to operate with a maximum input voltage of 5.5V and features a low quiescent current of 60 µA, ensuring high efficiency even under light load conditions. This regulator is ideal for applications requiring a stable and reliable power supply with minimal power consumption.

LDK120C31R Features

• Output Type: Fixed, providing a stable 3.1V output voltage.
• Input Voltage Range: Up to 5.5V, ensuring compatibility with a wide range of input sources.
• Output Current: Capable of delivering up to 200mA, making it suitable for various low-power applications.
• Low Dropout Voltage: A maximum dropout voltage of 0.3V at 200mA ensures efficient operation even at low input-to-output voltage differentials.
• Low Quiescent Current: 60 µA quiescent current minimizes power consumption, enhancing the device's efficiency.
• Power Supply Rejection Ratio (PSRR): 55dB over the frequency range of 120Hz to 10kHz, ensuring excellent noise rejection and stable output voltage.
• Protection Features: Over-current and over-temperature protection safeguard the device and connected circuits from damage.
• Control Features: An enable pin allows for easy control of the regulator's operation.
• Package Type: Surface mount in a Tape & Reel (TR) format, facilitating automated assembly processes.
• Compliance: REACH Unaffected and ROHS3 Compliant, ensuring environmental and safety standards are met.
• Moisture Sensitivity Level: MSL 1 (Unlimited), making it suitable for various manufacturing environments.

LDK120C31R Applications

The LDK120C31R is well-suited for a variety of applications where stable power supply and low power consumption are critical. These include:

• Consumer Electronics: Ideal for portable devices such as smartphones, tablets, and wearables where battery life and compact design are essential.
• Industrial Applications: Suitable for low-power sensors, IoT devices, and other industrial equipment requiring reliable power management.
• Telecommunications: Can be used in base stations, routers, and other communication equipment for stable power supply.
• Automotive: Applicable in various automotive electronic systems where space and power efficiency are crucial.
• Medical Devices: Ideal for portable medical devices such as glucose meters, blood pressure monitors, and other low-power medical equipment.

Conclusion of LDK120C31R

The LDK120C31R from STMicroelectronics stands out as a highly efficient and reliable linear regulator, offering a fixed 3.1V output with a maximum current of 200mA. Its low dropout voltage, low quiescent current, and high PSRR make it an excellent choice for applications requiring minimal power consumption and stable voltage regulation. The inclusion of over-current and over-temperature protection features ensures robustness and reliability, while the compact SOT323-5 package and surface mount configuration facilitate easy integration into a wide range of devices. Whether in consumer electronics, industrial systems, or medical devices, the LDK120C31R delivers outstanding performance and efficiency, making it a preferred choice for designers and engineers in the electronics industry.