LDK120M33R

The LDK120M33R is a low-dropout (LDO) linear voltage regulator manufactured by STMicroelectronics. It is designed to provide a stable output voltage of 3.3V with a maximum output current of 120mA. This device is particularly useful in applications where a low noise and stable power supply is critical, such as in portable devices, RF applications, and battery-powered systems.

Key Features:

1. Output Voltage: The LDK120M33R provides a fixed output voltage of 3.3V, making it suitable for powering various digital circuits and microcontrollers that require this specific voltage level.

2. Dropout Voltage: The LDO features a low dropout voltage, typically around 200mV at full load, which allows it to maintain regulation even when the input voltage is close to the output voltage. This is particularly beneficial in battery-operated devices where maximizing battery life is essential.

3. Current Capability: With a maximum output current of 120mA, the LDK120M33R can efficiently power low to moderate load applications, ensuring that connected components receive adequate current without significant voltage drop.

4. Quiescent Current: The device has a low quiescent current, which is advantageous for battery-powered applications, as it helps to extend battery life by minimizing power consumption when the device is idle.

5. Thermal Protection: The LDK120M33R includes built-in thermal shutdown protection, which prevents the device from overheating and ensures reliable operation under varying load conditions.

6. Short-Circuit Protection: This LDO is equipped with short-circuit protection, safeguarding the device and the connected load from damage in the event of a fault condition.

7. Package Type: The LDK120M33R is typically available in a compact SOT-23 package, which is suitable for space-constrained applications. This small form factor allows for easy integration into various circuit designs.

8. Operating Temperature Range: The device operates over a wide temperature range, typically from -40°C to +125°C, making it suitable for use in harsh environments.

Applications:

The LDK120M33R is ideal for a variety of applications, including:

• Powering microcontrollers and digital signal processors (DSPs)
• RF and wireless communication devices
• Battery-operated devices and portable electronics
• Automotive electronics
• Industrial control systems

Conclusion:

The LDK120M33R from STMicroelectronics is a versatile and efficient LDO voltage regulator that provides a reliable 3.3V output with low dropout voltage and low quiescent current. Its robust protection features and compact package make it an excellent choice for a wide range of electronic applications, particularly where space and power efficiency are critical.