STMicroelectronics

LD2982AM18R

LD2928AM18R Description

The LD2982AM18R is a linear regulator IC designed for applications requiring a fixed 1.8V output voltage with a maximum output current of 50mA. Manufactured by STMicroelectronics, this device is part of the Power Management (PMIC) category and is housed in a compact SOT23-5 package, making it suitable for surface mount applications. Despite being marked as obsolete, the LD2982AM18R remains a reliable choice for low-power applications due to its efficient design and robust protection features.

LD2982AM18R Features

• Output Type: Fixed at 1.8V, ensuring stable power supply for sensitive electronic components.
• Input Voltage Range: Capable of handling up to 16V, providing flexibility in power source selection.
• Output Current: Delivers a consistent 50mA, suitable for low-power devices.
• Low Dropout Voltage: A maximum dropout voltage of 0.225V at 50mA ensures high efficiency even at low input-to-output voltage differentials.
• Low Quiescent Current: With a quiescent current of only 150 µA, the LD2982AM18R minimizes power consumption in standby mode.
• High PSRR: A Power Supply Rejection Ratio (PSRR) of 45dB at 1kHz helps in filtering out noise from the input power supply, ensuring clean output voltage.
• Protection Features: Integrated over-current and over-temperature protection safeguards the device and connected circuits from damage.
• Enable Control: The enable feature allows for dynamic control of the regulator's operation, enhancing power management capabilities.
• Compliance: Compliant with REACH and ROHS3 standards, ensuring environmental safety and regulatory adherence.
• Moisture Sensitivity Level: MSL 1 (Unlimited) indicates the device is suitable for a wide range of environmental conditions without additional moisture protection.

LD2982AM18R Applications

The LD2982AM18R is ideal for a variety of low-power applications where a stable and efficient power supply is crucial. Some specific use cases include:

• Battery-Powered Devices: Its low dropout voltage and low quiescent current make it suitable for applications where battery life is a critical factor.
• Portable Electronics: The compact SOT23-5 package and surface mount design allow for integration into small form-factor devices.
• Embedded Systems: The fixed 1.8V output and enable control feature make it a reliable power solution for microcontrollers and other low-power embedded components.
• Industrial Control: The robust protection features and compliance with industry standards ensure reliability in harsh industrial environments.

Conclusion of LD2982AM18R

The LD2982AM18R, despite its obsolete status, remains a valuable component for low-power applications due to its efficient design and comprehensive feature set. Its low dropout voltage, low quiescent current, and high PSRR make it an excellent choice for battery-powered and portable electronic devices. The inclusion of over-current and over-temperature protection ensures reliability and longevity, while the enable control feature enhances power management capabilities. For applications requiring a stable 1.8V supply with a maximum output current of 50mA, the LD2982AM18R is a reliable and efficient solution.