STMicroelectronics

LDK120M30R

LDK120M30R Description

The LDK120M30R from STMicroelectronics is a high-performance, low-dropout (LDO) linear voltage regulator designed to deliver a fixed 3V output with a maximum current of 200mA. This surface-mount device operates within an input voltage range up to 5.5V, making it suitable for a variety of low-power applications. With a low dropout voltage of just 0.3V at 200mA, it ensures efficient power conversion even when the input voltage is close to the output level. The LDK120M30R is housed in a compact SOT23-5 package, ideal for space-constrained designs, and is available in Tape & Reel (TR) packaging for automated assembly.

LDK120M30R Features

• Low Quiescent Current (60 µA): Enhances battery life in portable applications.
• High PSRR (55dB @ 120Hz–10kHz): Excellent noise rejection for sensitive analog/digital circuits.
• Enable Control Pin: Allows for power management via external logic signals.
• Robust Protection: Includes over-current and over-temperature safeguards for reliable operation.
• Low Dropout (0.3V @ 200mA): Maintains regulation even with minimal input-output differential.
• Wide Input Range (Up to 5.5V): Compatible with common power sources like Li-ion batteries and 5V rails.
• RoHS3 & REACH Compliant: Meets environmental and safety standards.

LDK120M30R Applications

• Portable Electronics: Ideal for IoT sensors, wearables, and handheld devices due to low Iq and small footprint.
• Battery-Powered Systems: Efficiently regulates voltage in medical devices, smart meters, and wireless modules.
• Noise-Sensitive Circuits: High PSRR makes it suitable for RF/analog front-ends, ADCs, and audio amplifiers.
• Embedded Systems: Reliable power supply for microcontrollers, FPGAs, and memory modules in industrial/consumer applications.

Conclusion of LDK120M30R

The LDK120M30R stands out as a high-efficiency, compact LDO regulator with superior noise suppression and low power consumption. Its enable pin and protection features make it versatile for modern power management, while its SOT23-5 package ensures compatibility with miniaturized designs. Whether for battery-operated devices or precision analog systems, this regulator delivers stable, clean power with minimal overhead, making it a top choice for engineers prioritizing performance and reliability.