The TPS54040QDGQRQ1 is a Step-down Regulator with an integrated high-side MOSFET. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no load, input supply current to 116µA. Using the enable pin, shutdown supply current is reduced to 1.3µA, when the enable pin is low. Undervoltage lockout is internally set at 2.5V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow start pin that can also be configured for sequencing or tracking. An open drain power-good signal indicates the output is within 92 to 109% of its nominal voltage. A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.
● High efficiency at light loads with a pulse skipping Eco-mode™ control scheme
● Synchronizes to external clock
● Adjustable slow start and sequencing
● Undervoltage and overvoltage power-good output
● Adjustable undervoltage lockout voltage and hysteresis
● Supported by SwitcherPro™ software tool
● 116µA Operating quiescent current
● 1.3µA Shutdown current
● 200mR High-side MOSFET
● 0.8V Internal voltage reference
● Green product and no Sb/Br
