New load switch targets wearables and more

Semtech has introduced the SC33020H load switch platform in a tiny 0.9mm x 0.9mm, 4-bump chip scale package (CSP) with industry leading Ron of just 32mohm. The SC33020H load switch provides power rail control for up to 2A with reverse current blocking protection for both portable and non-portable devices, including wearables, action video cameras, smart phones, tablets and more. Andy Khayat, senior director for consumer power, Semtech Power Management Group, said: “The SC33020H reverse blocking load switch gives designers effective power rail control and protection and enhances system performance due to the ultra-low 32mohm Ron. Circuit designers can now achieve robust designs with extended battery life.” The switch accepts 1.6V to 5.5V supply input rail and whenever the output voltage goes higher than the input rail the switch blocks current from flowing in reverse direction to protect sensitive upstream circuitry or to prevent excessive power leakage loss in application standby states. The reverse blocking feature is present at all times regardless of the switch ON/OFF state. The Load Switch is ESD-hardened to greater than 4kV for robust circuit protection. Applied Power Electronics Conference (APEC), Charlotte, North Carolina, March 16-18, Booth 110.