LM5642XMT - Texas Instruments

Manufacturer Part Number

LM5642XMT

Manufacturer

Texas Instruments

Introduction

The LM5642XMT is part of Texas Instruments' Power Management integrated circuits, specializing in DC DC Switching Controllers designed for step-down (buck) applications.

Product Features and Performance

Supports dual outputs with a two-phase configuration.

Accommodates a wide input voltage range from 4.5V to 36V.

Synchronous rectification for improved efficiency.

Features an adjustable switching frequency of 375kHz.

Includes a maximum duty cycle of 98.9% for wide voltage range stepping.

Supports Clock Synchronization.

Integrated control features such as Current Limit, Enable, and Soft Start.

Operates across a broad temperature range from -40°C to 125°C (TJ).

Product Advantages

Enhanced power efficiency through synchronous rectification.

Flexibility in application due to wide input voltage range.

Improved system performance with clock synchronization.

Protection and durability are bolstered by integrated control features.

Key Technical Parameters

Output Type: Transistor Driver

Function: Step-Down

Output Configuration: Positive

Topology: Buck

Number of Outputs: 2

Voltage Supply (Vcc/Vdd): 4.5V ~ 36V

Frequency Switching: 375kHz

Duty Cycle (Max): 98.9%

Quality and Safety Features

Ensures reliable performance even under varying operational temperatures and stringent conditions, attributed to its robust design.

Compatibility

Designed for surface mount technology, making it compatible with modern PCB layouts.

Application Areas

Ideal for use in power supply regulation tasks in various electronic devices such as computing devices, telecommunication equipment, and industrial systems.

Product Lifecycle

Being marked as Obsolete, the LM5642XMT is in the final stage of its product lifecycle, with potential limitations on availability and support. Users should seek replacements or upgrades for future projects.

Several Key Reasons to Choose This Product

High efficiency and power saving due to synchronous rectification.

Flexible power solution thanks to its wide input voltage range and adjustable switching frequency.

Enhanced system reliability through advanced control features.

Broad application spectrum from computing to industrial systems.

Despite its obsolescence, its performance and reliability make it a valuable choice for existing deployments requiring replacements or spares.