Texas Instruments

LM51551DSST  

DC DC Switching Controllers

LM51551DSST Description

The LM51551DSST is a high-performance transistor driver designed for power management applications, offering a wide input voltage range and high switching frequency. Manufactured by Texas Instruments, this device is part of the Power Management Integrated Circuit (PMIC) category and is ideal for various power conversion topologies including Boost, Flyback, and SEPIC. The LM51551DSST features a non-synchronous design with a switching frequency range of 100kHz to 2.2MHz, making it suitable for applications requiring high efficiency and compact design.

LM51551DSST Features

• Wide Input Voltage Range: The LM51551DSST operates from 2.97V to 45V, providing flexibility in power supply design.
• High Switching Frequency: With a frequency range of 100kHz to 2.2MHz, it enables the use of smaller inductors and capacitors, reducing the overall size and weight of the power supply.
• Positive Output Configuration: Ensures compatibility with a wide range of power management systems.
• Soft Start Feature: Reduces inrush current during startup, protecting the circuit and improving reliability.
• Clock Synchronization: Allows for synchronized operation with other devices, minimizing electromagnetic interference (EMI).
• High Maximum Duty Cycle: Up to 96%, enabling efficient power conversion even at high load conditions.
• Compliance and Reliability: REACH unaffected and RoHS3 compliant, ensuring environmental and safety standards are met. The Moisture Sensitivity Level (MSL) of 1 (Unlimited) ensures robustness in various environmental conditions.
• Packaging: Available in Tape & Reel (TR) packaging, facilitating automated assembly processes.

LM51551DSST Applications

The LM51551DSST is well-suited for a variety of applications where efficient power conversion and compact design are critical. Key applications include:

• Consumer Electronics: Power supplies for smartphones, tablets, and other portable devices.
• Industrial Equipment: Power modules for motor drives, PLCs, and industrial controllers.
• Telecommunications: Power supplies for base stations and network equipment.
• Automotive Systems: Power management in hybrid and electric vehicles.
• Medical Devices: Power supplies for medical equipment requiring high reliability and efficiency.

Conclusion of LM51551DSST

The LM51551DSST from Texas Instruments is a versatile and efficient transistor driver, offering a wide input voltage range and high switching frequency. Its non-synchronous design and soft start feature make it suitable for a variety of power conversion topologies, ensuring high efficiency and reliability. The device's compliance with environmental and safety standards, along with its robust packaging, makes it an ideal choice for applications in consumer electronics, industrial equipment, telecommunications, automotive systems, and medical devices.

LM51551DSST Documents

Download datasheets and manufacturer documentation for LM51551DSST

Datasheets :

LM5155      

HTML Datasheet :

LM5155