Texas Instruments

LM5155QUDSSRQ1  

DC DC Switching Controllers

LM5155QUDSSRQ1 Description

The LM5155QUDSSRQ1 is a highly versatile and efficient DC-DC switching controller designed for automotive applications, manufactured by Texas Instruments. This IC is specifically tailored to provide robust performance in demanding environments, ensuring reliable power management solutions. The LM5155QUDSSRQ1 features a transistor driver output type with a positive output configuration, making it ideal for applications requiring precise control and high efficiency.

LM5155QUDSSRQ1 Features

• Wide Input Voltage Range: The LM5155QUDSSRQ1 operates within a wide voltage range of 2.97V to 16V for Vcc and 3.5V to 45V for Vdd, providing flexibility in various power supply scenarios.
• Frequency Range: It supports a switching frequency range of 100kHz to 2.2MHz, allowing for optimized performance across different load conditions and enabling the use of smaller inductors and capacitors.
• Control Features: The controller includes comprehensive control features such as current limit, enable, frequency control, power good, soft start, and synchronization, ensuring precise and reliable operation.
• High Duty Cycle: With a maximum duty cycle of 93%, the LM5155QUDSSRQ1 can achieve high efficiency and minimal power loss, making it suitable for high power density applications.
• Single Output Phase: The single output phase design simplifies circuit design and reduces complexity, while maintaining high performance.
• Automotive Grade: Certified for automotive applications, the LM5155QUDSSRQ1 meets stringent reliability and performance standards required in the automotive industry.
• Surface Mount Packaging: Available in a surface mount package (Tape & Reel), it is suitable for automated assembly processes, enhancing manufacturing efficiency and reliability.
• Compliance: The LM5155QUDSSRQ1 is REACH unaffected and RoHS3 compliant, ensuring environmental sustainability and regulatory compliance.
• Moisture Sensitivity Level: With an MSL of 1 (Unlimited), it is highly resistant to moisture, making it suitable for a wide range of operating environments.

LM5155QUDSSRQ1 Applications

The LM5155QUDSSRQ1 is well-suited for a variety of applications, particularly in the automotive sector, where reliability and performance are paramount. Key applications include:

• Automotive Power Supplies: Ideal for powering various electronic systems in vehicles, such as infotainment systems, advanced driver assistance systems (ADAS), and electronic control units (ECUs).
• Boost Converters: Efficiently stepping up voltage levels in power conversion circuits, ensuring stable power delivery.
• Flyback Converters: Providing isolated power conversion solutions, suitable for applications requiring galvanic isolation.
• SEPIC Converters: Offering single-ended primary inductor converters, which are useful for applications requiring both step-up and step-down voltage conversion.

Conclusion of LM5155QUDSSRQ1

The LM5155QUDSSRQ1 from Texas Instruments stands out as a reliable and efficient DC-DC switching controller, particularly suited for automotive applications. Its wide input voltage range, extensive control features, and high duty cycle make it a versatile solution for a variety of power management needs. The automotive grade certification and surface mount packaging further enhance its suitability for modern automotive electronics. With its robust performance and compliance with environmental standards, the LM5155QUDSSRQ1 is an excellent choice for engineers seeking a reliable and efficient power management solution.

LM5155QUDSSRQ1 Documents

Download datasheets and manufacturer documentation for LM5155QUDSSRQ1

PCN Assembly/Origin :

Mult Dev Wafer Fab Site 22/Dec/2023      

PCN Design/Specification :

LM5155x-Q1 Datasheet 24/Aug/2023