LM34919TLX

• Integrated N-channel buck switch
• Integrated launcher
• Input voltage range: 8V to 40V
• No loop compensation requirements are required
• Ultra-fast transient response
• The operating frequency remains constant with the load current and input voltage
• Maximum switching frequency: 2.0 MHz
• The maximum duty cycle is limited at start-up
• Adjustable output voltage
• The valley current is limited to 0.64A
• Precision internal reference
• Low bias current
• Operate efficiently
• Thermal shutdown

illustrate

The features of this switching regulator LM34919 steps required to achieve all the features of a low-cost, high-efficiency, step-down bias regulator that provides a load capacity of 0.6A. This buck regulator contains an N-channel buck switch and is available in a micro SMD package. The constant on-time feedback conditioning loop compensation scheme eliminates the need for fast load transient response, resulting in and simplified circuit design. The operating frequency still varies with the line and load, due to the inverse relationship between the input voltage and the on-time. Smooth transition in the valley, from current limit current limit in constant current and voltage mode to current limit detection results, reducing frequency and output voltage used without foldback. Other features include: VCC undervoltage lockout, overheat shutdown, gate drive undervoltage lockout, and maximum duty cycle limit.