LM2743MTCX

• The power stage input voltage is from 1V to 16V
• The input voltage of the control stage is from 3V to 6V
• The output voltage can be adjusted as low as 0.6V
• Power well marked and shut down
• Outputs overvoltage and undervoltage detection
• ± 2% voltage feedback accuracy temperature
• Low-end adjustable current sensing
• Adjustable soft start
• Track and shutdown and soft-start pin sequencing
• Switching frequency from 50 kHz to 1 megahertz
• TSSOP - 14 package

illustrate

The LM2743 is a high-speed synchronous step-down controller with an accurate feedback voltage accuracy of ± 2%. It can provide simple downconversion output voltages as low as 0.6V. While the control section of the IC is rated for 3 to 6V, the driver section is designed to accept input supply voltages up to 16V high. The use of adaptive non-overlapping MOSFET gate drivers helps avoid potential problems through shooting while maintaining high efficiency. The IC is designed to drive only N-channel MOSFETs in two high-side and low-side positions, making it a more cost-effective option. Its sensory provides a simple, adjustable current limit low-side switching voltage drop.

The fixed frequency voltage mode PWM control architecture adjusts an external resistor from 50 kHz to 1 MHz. This wide range of switching frequencies gives flexibility in power supply design, allowing for better trade-offs between components in size, cost, and benefit.

Features include soft start, input undervoltage lockout (UVLO), and good power supply (based on two undervoltage and overvoltage detections). In addition, the IC's stop pin can be used to provide a start-up delay, while the soft-start pin can be used for precise tracking purposes regarding external rail sequencing.

apply

• 3.3V buck regulation
• Cable modems, DSL, and ADSL
• Laser printers and inkjet printers
• Low voltage power module
• DSP, ASIC, core and I/O