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Texas Instruments
LM3103MHX/NOPB SIMPLE SWITCHER® Synchronous 1MHz 0.75A Step-Down Voltage Regulator

The LM3103 Synchronously Rectified Buck Converter features all required functions to implement a highly efficient and cost effective buck regulator. It is capable of supplying 0.75A to loads with an output voltage as low as 0.6V. Dual N-Channel synchronous MOSFET switches allow a low component count, thus reducing complexity and minimizing board size.
Different from most other COT regulators, the LM3103 does not rely on output capacitor ESR for stability, and is designed to work exceptionally well with ceramic and other very low ESR output capacitors. It requires no loop compensation, results in a fast load transient response and simple circuit implementation. The operating frequency remains nearly constant with line variations due to the inverse relationship between the input voltage and the on-time. The operating frequency can be externally programmed up to 1 MHz. Protection features include VCC under-voltage lock-out, output over-voltage protection, thermal shutdown, and gate drive under-voltage lock-out. The LM3103 is available in the thermally enhanced HTSSOP-16 package.

• Low Component Count and Small Solution Size
• Stable with Ceramic and Other Low ESR Capacitors
• No Loop Compensation Required
• High Efficiency at a Light Load by DCM Operation
• Pre-bias Startup
• Ultra-Fast Transient Response
• Programmable Soft-Start
• Programmable Switching Frequency up to 1 MHz
• Valley Current Limit
• Thermal Shutdown
• Output Over-Voltage Protection
• Precision Internal Reference for an Adjustable Output Voltage Down to 0.6V

• 5VDC, 12VDC, 24VDC, 12VAC, and 24VAC Systems
• Embedded Systems
• Industrial Control
• Automotive Telematics and Body Electronics
• Point of Load Regulators
• Storage Systems
• Broadband Infrastructure
• Direct Conversion from 2/3/4 Cell Lithium Batteries Systems

• Input Voltage Range 4.5 V to 42 V
• 0.75 A Output Current
• 0.6V, ±2% Reference
• Integrated Dual N-Channel Main and Synchronous MOSFETs
• Thermally Enhanced HTSSOP-16 Package

other parts : LM3103  LM3103MH/NOPB  LM3103MH  LM3103MHX  


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