TPS54561DPRT

TEXAS INSTRUMENTS  TPS54561DPRT  直流-直流开关降压逐步递减稳压器, 可调, 4.5V-60V输入, 800mV-59V输出, 5A输出, WSON-10

The 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.

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High efficiency at light loads with a pulse-skipping Eco-mode™

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87mR High-side MOSFET

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152µA Operating quiescent current and 2µA shutdown current

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100kHz to 2.5MHz Adjustable switching frequency

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Synchronizes to external clock

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Low dropout at light loads with integrated BOOT recharge FET

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Adjustable UVLO voltage and hysteresis

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UV and OV power-good output

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Adjustable soft start and sequencing

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0.8V 1% Internal voltage reference

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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.