LM34910SD

• Integrated 40V N-channel buck switch
• Integrated start-up regulator
• 8V to 36V Input Voltage Range:
• No loop compensation is required
• Ultra-fast transient response
• The operating frequency remains constant with the load current and input voltage
• Maximum duty cycle limited during start-up
• Adjustable output voltage
• The valley current is limited to 1.25A
• Precision internal reference
• Low bias current
• Operate efficiently
• Thermal shutdown

illustrate

The LM34910 switching regulator function steps require a low-cost, high-efficiency, buck bias regulator capable of delivering all the functions of 1.25A to the load. This buck regulator contains a 40V N-channel buck switch in a thermally enhanced LLP-10 package. Regulatory planning for hysteresis, no loop compensation, fast load transient response results, and simplified circuit implementation. Changes in operating frequency, line and load remain unchanged due to the inverse relationship between input voltage and time. Set to 1.25A current limit detection. Other features include VCC undervoltage lockout, thermal shutdown, gate drive undervoltage lockout, and maximum duty cycle limit.

apply

• High efficiency point-of-load (POL) regulators
• Nonisolated telecom buck regulator
• Medium and high voltage postregulator