Texas Instruments

LM5642XMH

LM5642XMH Description

The LM5642XMH is a highly integrated buck controller designed for high-efficiency power conversion applications. Manufactured by Texas Instruments, this device is part of the Power Management Integrated Circuit (PMIC) category and is housed in a 28-lead TSSOP package. It features a wide input voltage range of 4.5V to 36V, making it suitable for various power supply applications. The LM5642XMH operates at a switching frequency of 375kHz, ensuring efficient power delivery while maintaining a compact design.

LM5642XMH Features

• Output Type: Transistor Driver
• Output Configuration: Positive
• Product Status: Obsolete
• Switching Frequency: 375kHz
• REACH Status: REACH Unaffected
• Manufacturer: Texas Instruments
• Voltage - Supply (Vcc/Vdd): 4.5V to 36V
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• Synchronous Rectifier: Yes
• ECCN: EAR99
• Topology: Buck
• Mounting Type: Surface Mount
• Clock Sync: Yes
• Number of Outputs: 2
• Control Features: Current Limit, Enable, Soft Start
• Duty Cycle (Max): 98.9%
• Output Phases: 2
• HTSUS: 8542.39.0001
• Package: Tube
• Base Product Number: LM5642

The LM5642XMH offers several unique features that set it apart from similar models. Its synchronous rectification ensures high efficiency across a wide range of load conditions. The device also includes comprehensive control features such as current limiting, enable functionality, and soft start, which enhance system reliability and performance. Additionally, the ability to synchronize the clock ensures precise control and coordination in multi-phase applications.

LM5642XMH Applications

The LM5642XMH is ideal for applications requiring efficient power conversion and precise control. Its wide input voltage range and high switching frequency make it suitable for a variety of power supply designs, including:

• Telecommunications: Powering base stations and network equipment.
• Computing: Providing efficient power delivery for servers and data centers.
• Industrial: Driving high-power motors and actuators.
• Automotive: Powering electronic control units and infotainment systems.

The LM5642XMH's dual output capability and synchronous rectification make it particularly well-suited for applications where high efficiency and compact design are critical. Its ability to synchronize the clock also makes it ideal for multi-phase power conversion systems, ensuring precise control and coordination.

Conclusion of LM5642XMH

The LM5642XMH is a versatile and efficient buck controller that offers a wide range of features and benefits for high-performance power conversion applications. Despite its obsolete status, it remains a valuable solution for applications requiring high efficiency, precise control, and compact design. Its synchronous rectification, comprehensive control features, and dual output capability make it an excellent choice for a variety of industries, including telecommunications, computing, industrial, and automotive. For those seeking a reliable and efficient power management solution, the LM5642XMH is a compelling option.