Load switches and eFuses in Semtech’s HotSwitch platform shield methods in opposition to electrical transients and steady-state fault situations. When a surge is detected, HotSwitch units present sturdy safety to downstream subsystems by gracefully disconnecting the load from the facility supply. They provide an enhanced defend in opposition to inrush present, overvoltage, undervoltage, reverse present, quick circuit, and over-temperature faults.

Two HotSwitch merchandise can be found now: the HS2950P single-channel built-in high-side load change and the HS2240P built-in eFuse and surge safety gadget. The HS2950P is housed in a 3×3-mm, 12-pin DFN package deal, whereas the HS2240P is available in a 3.5×2-mm, 14-pin DFN package deal.

With a large enter voltage vary of two.7 V to 29 V, supporting output present as much as 5 A, the HS2950P load change furnishes an on-resistance of 25 mΩ typical to attenuate energy loss. It incorporates numerous adjustable safety options, together with soft-start, turn-on delay, overvoltage, undervoltage, and present restrict. The gadget presents thermal shutdown performance and fault flagging to make sure a rugged protection for downstream industrial, telecom, and shopper methods topic to transients and quick circuits.

Designed to guard in opposition to numerous electrical overstress situations, resembling lightning, ESD, quick circuits, and inrush present, the HS2240P eFuse has an enter voltage vary of two.7 V to 22 V and a present limiting threshold of three.9 A. It incorporates a excessive ESD face up to voltage of ±30 kV for air and phone per IEC 61000-4-2. The VIN pin of this gadget is rated for a high-energy transient present as much as 40 A (tp=8/20μs).

HotSwitch elements will be bought by way of Semtech’s distributor community.

HS2950P product web page

HS2240P product web page


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