STMicroelectronics

LD3985M47R

LD3985M47R Description

The LD3985M47R is a high-performance linear regulator designed by STMicroelectronics, a leading manufacturer in the electronics industry. This regulator is part of the Power Management Integrated Circuit (PMIC) category and offers a fixed output voltage of 4.7V with a maximum output current of 150mA. It is housed in a compact SOT23-5 package, making it suitable for a wide range of applications where space is a critical consideration.

The LD3985M47R features a maximum input voltage of 6V and a very low dropout voltage of 0.1V at 150mA, ensuring high efficiency even under heavy load conditions. The regulator also boasts a low quiescent current of 150 µA, which is crucial for battery-operated devices and other applications where power consumption must be minimized. Additionally, the regulator includes an enable control feature, allowing for dynamic power management and further optimization of power consumption.

LD3985M47R Features

• Output Type: Fixed
• Voltage - Input (Max): 6V
• Current - Output: 150mA
• Number of Regulators: 1
• Output Configuration: Positive
• Current - Supply (Max): 250 µA
• Voltage - Output (Min/Fixed): 4.7V
• Voltage Dropout (Max): 0.1V @ 150mA
• Current - Quiescent (Iq): 150 µA
• PSRR: 60dB ~ 50dB (1kHz ~ 10kHz)
• Control Features: Enable
• Protection Features: Over Current, Over Temperature
• Mounting Type: Surface Mount
• Package: Tape & Reel (TR)
• Product Status: Active
• REACH Status: REACH Unaffected
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• HTSUS: 8542.39.0001
• ECCN: EAR99

LD3985M47R Applications

The LD3985M47R is ideal for applications requiring a stable and efficient power supply with minimal power loss. Its low dropout voltage and high PSRR make it suitable for consumer electronics, portable devices, and industrial applications. Specific use cases include:

• Consumer Electronics: Smartphones, tablets, and other portable devices benefit from the regulator's low power consumption and high efficiency.
• Industrial Equipment: Sensors, actuators, and control systems can leverage the LD3985M47R for reliable power management.
• Medical Devices: Portable medical devices, such as glucose meters and portable monitors, can utilize the regulator for its compact size and low power draw.
• Automotive Applications: In-vehicle electronics, such as infotainment systems and electronic control units, can benefit from the regulator's robust protection features and high reliability.

Conclusion of LD3985M47R

The LD3985M47R from STMicroelectronics stands out in the market due to its combination of high efficiency, low power consumption, and robust protection features. Its compact SOT23-5 package and low dropout voltage make it an excellent choice for space-constrained applications. The enable control feature and high PSRR further enhance its versatility and performance. Whether used in consumer electronics, industrial equipment, or medical devices, the LD3985M47R offers a reliable and efficient power management solution.