Microsemi

LX8117B-33CST

LX8117B-33CST Description

The LX8117B-33CST is a linear regulator IC designed for power management applications, manufactured by Microsemi Corporation. This device offers a fixed output voltage of 3.3V and is capable of delivering a maximum output current of 1.2A. It is designed to operate with an input voltage range up to 12V, making it suitable for a variety of electronic systems that require stable power supply. The regulator features a dropout voltage of 1.3V at 1.2A, ensuring efficient operation even under varying load conditions.

LX8117B-33CST Features

• Output Type: Fixed
• Voltage - Input (Max): 12V
• Current - Output: 1.2A
• Number of Regulators: 1
• Output Configuration: Positive
• Voltage - Output (Min/Fixed): 3.3V
• Voltage Dropout (Max): 1.3V @ 1.2A
• Current - Quiescent (Iq): 10 mA
• PSRR: 75dB (120Hz)
• Protection Features: Over Current, Short Circuit
• Operating Temperature: 0°C to 125°C
• Moisture Sensitivity Level (MSL): 2 (1 Year)
• Mounting Type: Surface Mount
• Package: Tube
• Product Status: Obsolete
• REACH Status: REACH Unaffected
• ECCN: EAR99
• HTSUS: 8542.39.0001

The LX8117B-33CST stands out due to its high PSRR (Power Supply Rejection Ratio) of 75dB at 120Hz, which ensures minimal noise and ripple in the output voltage, making it ideal for sensitive analog circuits. The over current and short circuit protection features enhance the reliability and safety of the device, protecting it from potential damage due to abnormal operating conditions.

LX8117B-33CST Applications

The LX8117B-33CST is well-suited for a range of applications where a stable and reliable power supply is crucial. Its fixed 3.3V output and 1.2A current capability make it ideal for powering microcontrollers, sensors, and other low-power electronic devices. The regulator's low dropout voltage ensures efficient operation even when the input voltage is close to the output voltage, making it suitable for battery-powered applications where the input voltage may vary.

Specific use cases include:

• Embedded Systems: Providing stable power to microcontrollers and other embedded components.
• Industrial Control: Ensuring reliable power supply for sensors and actuators in industrial environments.
• Consumer Electronics: Powering low-power devices such as portable gadgets and IoT devices.
• Automotive Electronics: Suitable for applications requiring a stable power supply in automotive systems.

Conclusion of LX8117B-33CST

The LX8117B-33CST is a robust linear regulator IC that offers a reliable and efficient power management solution. Its high PSRR, low dropout voltage, and protection features make it a superior choice for applications requiring stable and noise-free power supply. Despite being marked as obsolete, the LX8117B-33CST remains a viable option for designers looking for a proven and reliable power management solution. Its compatibility with surface mount technology and the SOT223 package ensures ease of integration into modern electronic designs.