The TPS54561DPRT is a 5A Step-down DC-DC Converter with soft-start and Eco-mode?. The device survives load dump pulses up to 65V per ISO 7637. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no-load supply current to 152μA. Shutdown supply current is reduced to 2μA when the enable pin is pulled low. Under-voltage lockout is internally set at 4.3V but can increase using an external resistor-divider at the enable pin. The output voltage start up ramp is controlled by the soft start pin that can also be configured for sequencing/tracking. An open drain power good signal indicates the output is within 93 to 106% of its nominal voltage. A wide adjustable switching-frequency range allows for optimization of either efficiency or external component size. Cycle-by-cycle current limit, frequency foldback and thermal shutdown protects internal and external components during an overload condition.
- High efficiency at light loads with a pulse-skipping Eco-mode?
- 87mR High-side MOSFET
- 152μA Operating quiescent current and 2μA shutdown current
- 100kHz to 2.5MHz Adjustable switching frequency
- Synchronizes to external clock
- Low dropout at light loads with integrated BOOT recharge FET
- Adjustable UVLO voltage and hysteresis
- UV and OV power-good output
- Adjustable soft start and sequencing
- 0.8V 1% Internal voltage reference
- Green product and no Sb/Br
工业, 自动化与过程控制, 电机驱动与控制, 车用, 消费电子产品, 电源管理, 通信与网络
