The TPS54040ADRCT 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, regulated input supply current to 116µA. Using the enable pin, shutdown supply current is nominally 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 when the output is within 94 to 107% 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™
● Tighter enable threshold than TPS54040 for more accurate UVLO voltage
● Adjustable UVLO voltage and hysteresis
● Synchronizes to external clock
● Adjustable slow start/sequencing
● UV and OV power good output
● Supported by WEBENCH® and SwitcherPro™ software tool
● 116µA Operating quiescent current
● 1.3µA Shutdown current
● 0.8V Internal voltage reference
● 200mR High-side MOSFET
● Green product and no Sb/Br
