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LDK320ADU50R

LDK320ADU50R Description

The LDK320ADU50R is a high-performance linear regulator designed by STMicroelectronics, a leading manufacturer of semiconductor solutions. This device is part of the Power Management Integrated Circuit (PMIC) category and is specifically tailored for applications requiring a stable and efficient power supply. The LDK320ADU50R features a fixed output voltage of 5V and is capable of delivering a maximum output current of 200mA. It operates with an input voltage range up to 18V, ensuring compatibility with a wide array of power sources. The regulator is housed in a compact SOT89 package, making it suitable for surface mount applications and ideal for space-constrained designs.

LDK320ADU50R Features

• Output Type: Fixed
• Voltage - Input (Max): 18V
• Current - Output: 200mA
• Number of Regulators: 1
• Output Configuration: Positive
• Current - Supply (Max): 100 µA
• Voltage - Output (Min/Fixed): 5V
• Voltage Dropout (Max): 0.35V @ 200mA
• Current - Quiescent (Iq): 90 µA
• PSRR: 88dB to 48dB (120Hz to 10kHz)
• Protection Features: Over Current, Over Temperature
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• Mounting Type: Surface Mount
• Package: Tape & Reel (TR)
• Product Status: Active
• REACH Status: REACH Unaffected
• RoHS Status: ROHS3 Compliant
• ECCN: EAR99
• HTSUS: 8542.39.0001

The LDK320ADU50R stands out due to its low dropout voltage of 0.35V at 200mA, which minimizes power dissipation and enhances efficiency, especially in low-voltage applications. Its quiescent current of 90 µA ensures minimal power consumption during operation, making it ideal for battery-powered devices. The regulator also offers excellent power supply rejection ratio (PSRR), ranging from 88dB at 120Hz to 48dB at 10kHz, which helps in maintaining a clean output voltage even in noisy environments. Additionally, the device includes over-current and over-temperature protection features, ensuring robustness and reliability in various operating conditions.

LDK320ADU50R Applications

The LDK320ADU50R is well-suited for a variety of applications where a stable and efficient power supply is required. Its fixed 5V output and 200mA current capability make it ideal for powering microcontrollers, sensors, and other low-power electronics. The low dropout voltage and high PSRR make it particularly suitable for applications where the input voltage may vary significantly or where a clean output voltage is critical. Specific use cases include:

• Consumer Electronics: Portable devices such as smartphones, tablets, and wearables.
• Industrial Applications: Sensors, actuators, and control systems.
• Automotive: Electronic control units (ECUs) and in-vehicle infotainment systems.
• Medical Devices: Portable medical equipment and diagnostic tools.

Conclusion of LDK320ADU50R

The LDK320ADU50R from STMicroelectronics is a versatile and efficient linear regulator designed to meet the demands of modern electronic systems. Its combination of a fixed 5V output, low dropout voltage, and high PSRR ensures stable and efficient power delivery, making it a reliable choice for a wide range of applications. The inclusion of over-current and over-temperature protection features further enhances its robustness and reliability. With its compact SOT89 package and surface mount compatibility, the LDK320ADU50R is an excellent solution for designers looking to optimize space and performance in their power management designs.