LM34910SD

• Integrated 40V N-channel buck switch
• Integrated starting voltage regulator
• Input voltage range from 8V to 36V:
• 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 steps to LM34910 switching regulator functionality require a low-cost, high-efficiency, step-down bias regulator capable of delivering all 1.25A functionality to the load. The buck regulator contains a 40V N-channel buck switch in a thermally enhanced LLP-10 package. Hysteresis regulation plan, eliminates loop compensation, results in fast load transient response, and simplifies circuit implementation. Changes in operating frequency, line and load, due to the inverse relationship between input voltage and time, remain constant. Set to 1.25A current limit detection. Other features include: VCC undervoltage lockout, thermal shutdown, gate drive undervoltage lockout, maximum duty cycle limit.

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