LM3103MH

• Low component count and small solution size
• Stable with ceramic and other low ESR capacitors
• No loop compensation is required
• High efficiency in light load DCM operation
• Pre-bias start-up
• Ultra-fast transient response
• Programmable soft-start
• Programmable switching frequency up to 1 MHz
• Valley current limit
• Thermal shutdown
• Output overvoltage protection
• Precision adjustable output voltage down to 0.6V internal reference

illustrate

The function of the LM3103 buck converter for synchronous rectification enables all the necessary functions of a high-efficiency and cost-effective buck regulator. It is capable of delivering output voltages as low as 0.6V to 0.75A loads. Dual N-channel synchronous MOSFET switches allow for low component count, reducing complexity and board size.

The difference is that most of the other COT regulatory bodies of the LM3103 do not rely on stable output capacitance for ESR, and are designed to work very well with ceramic and other very low ESR output capacitors. It eliminates the need for loop compensation, resulting in a fast load transient response and simple circuit implementation. The operating frequency remains almost constant line variation due to the inverse relationship between input voltage and time. The operating frequency can be externally programmed up to 1 MHz. Protection features include V_CCVoltage lockout, output overvoltage protection, thermal shutdown, gate drive undervoltage lockout. The LM3103 is available in a thermally enhanced eTSSOP-16 package.

Main specifications

• Input voltage range 4.5V - 42V
• 0.75A output current
• 0.6V, ± 2% benchmark
• Integrated dual N-channel primary and synchronous MOSFETs
• Thermally enhanced eTSSOP-16 package