The TPS54140DGQ is a 42V 1.5A Step-down Converter with an integrated high-side MOSFET and Eco-mode™. Current-mode control provides simple external compensation and flexible component selection. A low ripple-pulse skip mode reduces the no-load, regulated output supply current to 116µA. Using the enable pin, shutdown supply current is reduced to 1.3µA. Under-voltage lockout is internally set at 2.5V, but can be increased using the enable pin. The output voltage start-up ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open drain power good signal indicates 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.
● 200mR High-side MOSFET
● High efficiency at light loads with a pulse-skipping Eco-mode™
● 116µA Operating quiescent current
● 1.3µA Shutdown current
● 100kHz to 2.5MHz Switching frequency
● Synchronizes to external clock
● Adjustable slow start/sequencing
● UV and OV power-good output
● Adjustable UVLO voltage and hysteresis
● 0.8V Internal voltage reference
● Green product and no Sb/Br
●This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
