| Part Numbert | Mfg | Packt | D/C | Descriptiont | Qty | Company/Contact |
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STQ1NK60ZRAP Datasheet When the BDGIA and the BDPIA devices are pow- ered down, the output circuit appears as an open cir- cuit relative to the power supplies; hence, they will not load the transmission line. For those circuits with termination resistors, the line will remain impedance matched when the circuit is powered down. The BPNGA, BPNPA, BPPGA, and BDGLA willload the transmission line, because of the protection circuit, when the circuit is powered down. STQ1NK60ZRAP on stock ROHM CORPORATION, Rohm Electronics Division, 3034 0wen Dr., Antioch, TN 37013 (615)641-2020, FAX (615)641-2022 2 RP1131E.PMS. OPTOELECTRONICS. 0-37 823 feedback voltage just surpasses the lower hysteretic thresh- old of C2, the output of C2 changes states from low to high, and DH responds by pulling the gate of Ql up turning Ql on and starting the hysteretic cycle over. Note that as the load current decreases, it takes increasingly longer periods for the load current to discharge COUT through the hysteretic window, and as the load current in- creases, the periods become even shorter. It can be seen from the above observation that the switching frequency of the hysteretic loop varies as the load varies. The switching frequency can be approximated using |
