The TPS54560BDDA is a60-V, 5-A step-down regulator with anintegrated high side MOSFET. Current-mode control provides simple external compensation andflexible component selection. A low-ripple pulse-skip mode reduces no-load-supply current to 146μA. Shutdown supply current is reduced to 2 μA when the EN (enable) pin is pulled low.
Undervoltage lockout is internally set at 4.3 V but can be increased using the EN pin.Output voltage start-up ramp is internally controlled to provide a controlled start-up andeliminate overshoot.
A wide switching frequency range allows either efficiency or external component size tobe optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdownprotects internal and external components during an overload condition.
The TPS54560BDDA isavailable in an 8-pin thermally enhanced HSOIC PowerPAD package.
Feature
- High efficiency at light loads with pulse skipping Eco-mode
- 92-mΩ high-side MOSFET
- 146-μA operating quiescent current and
2-μA shutdown current - 100-kHz to 2.5-MHz Fixed switching frequency
- Synchronizes to external clock
- Low dropout at light loads with integrated BOOT recharge FET
- Adjustable UVLO and hysteresis
- 0.8 V 1% Internal voltage reference
- 8-Pin HSOIC with PowerPAD package
- –40°C to 150°C TJ operating range
- Create a custom design using the TPS54560B with the WEBENCH Power Designer
