STMicroelectronics

LD39015M15R

LD39015M15R Description

The LD39015M15R from STMicroelectronics is a high-performance, low-dropout (LDO) linear voltage regulator designed for precision power management in space-constrained applications. This fixed-output regulator delivers a stable 1.5V output voltage with a maximum output current of 150mA, making it ideal for low-power embedded systems, IoT devices, and portable electronics. Its ultra-low dropout voltage of 0.1V @ 100mA ensures efficient operation even with minimal input-to-output differentials, while the input voltage range of up to 5.5V accommodates various power sources. Packaged in a compact SOT23-5 form factor and available in Tape & Reel (TR), it is optimized for automated assembly processes.

LD39015M15R Features

• Low Quiescent Current: Just 50 µA (typ) enhances battery life in portable applications.
• High PSRR: 65dB @ 1kHz and 62dB @ 10kHz ensures excellent noise rejection for sensitive analog/digital circuits.
• Robust Protection: Integrated over-current and over-temperature safeguards enhance reliability.
• Enable Control: External enable pin allows for power sequencing and standby mode, reducing system power consumption.
• Low Dropout: 0.1V @ 100mA maximizes efficiency in low-voltage scenarios.
• Wide Operating Range: Supports input voltages up to 5.5V, compatible with Li-ion batteries and 3.3V/5V rails.
• RoHS3 & REACH Compliant: Meets stringent environmental and safety standards.

LD39015M15R Applications

• Battery-Powered Devices: Ideal for wearables, sensors, and wireless modules due to low Iq and dropout.
• Consumer Electronics: Powers microcontrollers, memory, and peripherals in smart home devices.
• Industrial Systems: Suitable for PLCs, instrumentation, and low-noise analog circuits benefiting from high PSRR.
• Automotive Accessories: Supports infotainment and telematics systems where stable voltage is critical.
• Medical Devices: Ensures reliable operation in portable diagnostic equipment.

Conclusion of LD39015M15R

The LD39015M15R stands out as a versatile, high-efficiency LDO regulator, combining low power consumption, compact packaging, and robust protection features. Its superior PSRR and enable control make it a preferred choice for noise-sensitive and power-optimized designs. Whether for IoT edge devices, industrial automation, or consumer electronics, this regulator delivers reliable performance while adhering to modern environmental standards. Engineers seeking a balance of size, efficiency, and reliability will find it an exceptional solution for 1.5V power rails.