Texas Instruments

LM5642XMTX

LM5642XMTX Description

The LM5642XMTX is a highly integrated DC-DC switching controller designed by Texas Instruments, featuring a transistor driver output type with a positive output configuration. This controller is housed in a 28-TSSOP package and is suitable for surface-mount applications. Despite being marked as obsolete, the LM5642XMTX remains a robust solution for various power management needs.

Key specifications include a switching frequency of 375kHz, which allows for efficient power conversion with minimal electromagnetic interference (EMI). The controller operates over a wide input voltage range of 4.5V to 36V, making it versatile for different power supply requirements. The LM5642XMTX also supports synchronous rectification, enhancing efficiency and reducing power loss.

LM5642XMTX Features

• Output Type: Transistor Driver
• Output Configuration: Positive
• Switching Frequency: 375kHz
• Input Voltage Range: 4.5V to 36V
• Synchronous Rectification: Yes
• Control Features: Current Limit, Enable, Soft Start
• Duty Cycle (Max): 98.9%
• Output Phases: 2
• Moisture Sensitivity Level (MSL): 3 (168 Hours)
• Package Type: Tape & Reel (TR)
• Topology: Buck
• Clock Sync: Yes
• Number of Outputs: 2
• REACH Status: REACH Unaffected
• ECCN: EAR99
• HTSUS: 8542.39.0001

LM5642XMTX Applications

The LM5642XMTX is ideal for applications requiring high efficiency and compact design. Its buck topology and synchronous rectification make it suitable for power supplies in telecommunications, industrial equipment, and automotive electronics. The controller's wide input voltage range and dual outputs make it a versatile choice for systems with varying power requirements.

Specific use cases include:

• Telecommunications: Powering base stations and network equipment.
• Industrial Equipment: Controlling power in programmable logic controllers (PLCs) and motor drives.
• Automotive Electronics: Managing power in electronic control units (ECUs) and infotainment systems.

Conclusion of LM5642XMTX

The LM5642XMTX, despite its obsolete status, remains a valuable component for power management applications. Its robust features, including synchronous rectification, dual outputs, and a wide input voltage range, make it an efficient and reliable choice. While newer models may offer additional features, the LM5642XMTX continues to provide excellent performance in its intended applications, making it a preferred choice for engineers and designers in need of a proven DC-DC switching controller.