TI LM2743MTCX/NOPB

The LM2743 is a high-speed synchronous buck regulator controller with precise feedback voltage (±2% accuracy). It enables straightforward buck conversion with output voltages as low as 0.6V. Although the control section of the IC is rated for 3V to 6V, the driver section is designed to accept input supply rails up to 16V. Adaptive non-overlapping MOSFET gate drivers help prevent potential shoot-through issues while maintaining high efficiency. The IC is designed for a more cost-effective solution, driving only N-channel MOSFETs in both the high-side and low-side positions. It senses the low-side switch voltage drop to provide simple, adjustable current limiting. The fixed-frequency voltage-mode PWM control architecture is adjustable from 50kHz to 1MHz via a single external resistor. This wide switching frequency range gives power supply designers the flexibility to achieve better trade-offs among component size, cost, and efficiency. Features include soft-start, input undervoltage lockout (UVLO), and power-good indication (based on undervoltage and overvoltage detection). In addition, the IC's shutdown pin can be used to provide startup delay, and the soft-start pin can be used for precise tracking to sequence relative to external supply rails.

• Power stage input voltage: 1V to 16V
• Control stage input voltage: 3V to 6V
• Adjustable output voltage down to 0.6V
• Power good flag and shutdown function
• Overvoltage and undervoltage detection
• Feedback voltage accuracy ±2% over full temperature range
• Low-side adjustable current sensing
• Adjustable soft-start
• Tracking and sequencing with shutdown and soft-start pins
• Switching frequency: 50kHz to 1MHz
• TSSOP-14 package
• Create custom designs using LM2743 with WEBENCH Power Designer

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