Texas Instruments TPS54340 42 V Input, 3.5 A, Step-Down DC/DC Converter with Eco-mode? TPS54340DDA

The TPS54340DDA is a step-down DC/DC converter designed for input voltages ranging from 4.5 V to 42 V, with a maximum input voltage of 45 V. It provides a continuous output current of 3.5 A and features an integrated high-side MOSFET with a low on-resistance of 92 m,Ѷ. The device employs current mode control, allowing for simple external compensation and flexible component selection. This converter includes an Eco-mode that enhances efficiency at light loads, reducing the no-load supply current to 146 OºA and the shutdown current to just 1 OºA. It features an adjustable undervoltage lockout (UVLO) and an internal soft-start mechanism to control the output voltage ramp-up and minimize overshoot. The TPS54340DDA supports a wide switching frequency range from 100 kHz to 2.5 MHz, which can be synchronized to an external clock. Thermal protection, frequency foldback, and accurate cycle-by-cycle current limiting are included to safeguard both internal and external components during overload conditions. The device operates over a temperature range of -40¬8C to 150¬8C and is housed in an 8-terminal thermally enhanced HSOP PowerPAD package, making it suitable for various applications in industrial, automotive, and communication power systems.