Manufacturer Part Number
LM5642XMHX
Manufacturer
Texas Instruments
Introduction
The LM5642XMHX is a power management integrated circuit specifically designed for DC to DC switching control, supporting a step-down (buck) topology.
Product Features and Performance
Two Output Buck Regulator
Operates across a wide voltage supply range from 4.5V to 36V
High switching frequency of 375kHz
Maximum duty cycle of 98.9%
Includes synchronous rectifier for improved efficiency
Supports clock synchronization
Product Advantages
Highly efficient power conversion
Capable of handling high duty cycles for increased power output
Dual output phases facilitate balanced load distribution
Key Technical Parameters
Output Type: Transistor Driver
Function: Step-Down
Output Configuration: Positive
Topology: Buck
Number of Outputs: 2
Output Phases: 2
Voltage - Supply (Vcc/Vdd): 4.5V ~ 36V
Frequency - Switching: 375kHz
Duty Cycle (Max): 98.9%
Synchronous Rectifier: Yes
Clock Sync: Yes
Control Features: Current Limit, Enable, Soft Start
Operating Temperature: -40°C ~ 125°C (TJ)
Quality and Safety Features
Designed to operate reliably within a wide temperature range of -40°C to 125°C
Compatibility
Surface Mount, 28-PowerTSSOP package ensuring compatibility with standard PCB technology
Application Areas
Ideal for electronics requiring efficient power management within the specified voltage and temperature ranges
Product Lifecycle
The LM5642XMHX is marked as Obsolete, which means it is near discontinuation. It is advisable to consult Texas Instruments for available replacements or upgrade options.
Several Key Reasons to Choose This Product
Efficient conversion and high power output due to high duty cycle capabilities
Dual output and phase operation for improved stability and distribution
Extensive control features including current limit and soft start for enhanced operation
Robust design suitable for harsh operating environments
Direct compatibility with common surface mount technology
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LM5642MHXTexas Instruments