STMicroelectronics

LDK120C35R

LDK120C35R Description

The LDK120C35R is a high-performance linear regulator designed by STMicroelectronics, a leading manufacturer in the power management integrated circuit (PMIC) category. This device offers a fixed output voltage of 3.5V and is capable of delivering up to 200mA of output current. It is designed for surface mount applications and comes in a compact SOT323-5 package, making it suitable for space-constrained designs. The regulator features a low dropout voltage of 0.3V at 200mA, ensuring efficient operation even at low input voltages down to 5.5V. The LDK120C35R also boasts a low quiescent current of 60 µA, making it ideal for battery-powered and low-power consumption applications.

LDK120C35R Features

• Fixed Output Voltage: The LDK120C35R provides a stable 3.5V output, ensuring consistent power delivery to sensitive electronic components.
• High Efficiency: With a low dropout voltage of 0.3V at 200mA, the regulator maintains high efficiency even when the input voltage is close to the output voltage.
• Low Quiescent Current: The device features a low quiescent current of 60 µA, which is crucial for extending battery life in portable devices.
• Enable Control Feature: The regulator includes an enable pin, allowing for dynamic power management and control.
• Protection Features: The LDK120C35R incorporates over-current and over-temperature protection, safeguarding the device and connected components from damage.
• High PSRR: The regulator offers a high power supply rejection ratio (PSRR) of 55dB over a frequency range of 120Hz to 10kHz, ensuring clean output voltage even in noisy environments.
• Compliance and Reliability: The device is REACH unaffected and RoHS3 compliant, ensuring environmental safety and regulatory compliance. It also has a moisture sensitivity level (MSL) of 1, making it suitable for a wide range of manufacturing processes.

LDK120C35R Applications

The LDK120C35R is well-suited for a variety of applications where stable and efficient power regulation is required. Some specific use cases include:

• Portable Devices: Ideal for smartphones, tablets, and other portable electronics where battery life and compact design are critical.
• IoT Devices: Suitable for Internet of Things (IoT) devices that require low power consumption and reliable power regulation.
• Wearable Technology: Perfect for wearable devices such as smartwatches and fitness trackers, where space and power efficiency are paramount.
• Medical Devices: Applicable in medical devices that require stable power supply and low quiescent current to ensure long battery life.
• Industrial Applications: Useful in industrial sensors and control systems where reliable power regulation is essential.

Conclusion of LDK120C35R

The LDK120C35R from STMicroelectronics is a versatile and efficient linear regulator that stands out in its category due to its low dropout voltage, low quiescent current, and high PSRR. Its compact SOT323-5 package and surface mount design make it suitable for a wide range of applications, from portable consumer electronics to industrial and medical devices. The inclusion of enable control and robust protection features further enhances its reliability and flexibility. For designers seeking a high-performance, low-power solution, the LDK120C35R is an excellent choice.