STMicroelectronics

LF85CDT-TR  

Linear & Switching Voltage Regulators

LF85CDT-TR Description

The LF85CDT-TR is a linear regulator IC designed by STMicroelectronics, featuring a fixed output voltage of 8.5V and a maximum output current of 500mA. This regulator is housed in a DPAK package, suitable for surface-mount applications. Despite being marked as obsolete, the LF85CDT-TR remains a reliable choice for power management applications due to its robust design and performance characteristics. The regulator offers a maximum input voltage of 16V and a dropout voltage of 0.7V at full load, ensuring efficient operation even under varying input conditions. It also includes over-current and over-temperature protection features, enhancing its reliability and safety in diverse operating environments.

LF85CDT-TR Features

• Output Type: Fixed output voltage of 8.5V, providing stable power supply for specific applications.
• Input Voltage Range: Capable of handling up to 16V input, offering flexibility in power source selection.
• Output Current: Delivers a consistent 500mA of output current, suitable for moderate power requirements.
• Low Dropout Voltage: With a maximum dropout voltage of 0.7V at 500mA, the LF85CDT-TR maintains high efficiency even at lower input voltages.
• Protection Features: Equipped with over-current and over-temperature protection, ensuring safe operation and prolonged lifespan.
• Low Quiescent Current: Features a quiescent current of only 1.5mA, minimizing power consumption during standby conditions.
• High PSRR: Offers a power supply rejection ratio (PSRR) of 72dB to 57dB across a frequency range of 120Hz to 10kHz, ensuring high performance in noise-sensitive applications.
• Compliance: REACH unaffected and ROHS3 compliant, adhering to environmental and safety standards.
• Packaging: Supplied in a DPAK package with a moisture sensitivity level (MSL) of 1 (unlimited), suitable for surface-mount technology (SMT) and reflow soldering processes.

LF85CDT-TR Applications

The LF85CDT-TR is ideal for a variety of applications where a stable and efficient power supply is required. Its fixed 8.5V output and 500mA current capability make it suitable for powering analog circuits, sensors, and low-power microcontrollers. The regulator's low dropout voltage and high PSRR make it particularly well-suited for applications where noise and efficiency are critical factors. Specific use cases include:

• Analog Circuits: Providing a stable power supply for sensitive analog circuits, ensuring minimal noise interference.
• Sensor Systems: Ideal for powering sensors that require a consistent voltage and low noise environment.
• Microcontroller Power Supply: Suitable for powering low-power microcontrollers and embedded systems.
• Industrial Applications: Robust design and protection features make it reliable for industrial environments where over-current and over-temperature conditions may occur.

Conclusion of LF85CDT-TR

The LF85CDT-TR, despite being marked as obsolete, remains a viable option for applications requiring a stable 8.5V power supply with a maximum output current of 500mA. Its low dropout voltage, high PSRR, and protection features make it a reliable choice for various power management needs. While newer alternatives may be available, the LF85CDT-TR's proven performance and compliance with industry standards ensure it continues to be a valuable component in the electronics industry.

LF85CDT-TR Documents

Download datasheets and manufacturer documentation for LF85CDT-TR

Datasheets :

LFxx      

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PCN Obsolescence/ EOL :

Mult Dev OBS 03/Aug/2021