SLVS077F April 1977 – January 2021 SG2524 , SG3524
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
When an external clock is desired, a clock pulse of approximately 3 V can be applied directly to the oscillator output terminal. The impedance to ground at this point is approximately 2 kΩ. In this configuration, RTCT must be selected for a clock period slightly greater than that of the external clock.
If two or more SGx524 regulators are operated synchronously, all oscillator output terminals must be tied together. The oscillator programmed for the minimum clock period is the master from which all the other SGx524s operate. In this application, the CTRT values of the slaved regulators must be set for a period approximately 10% longer than that of the master regulator. In addition, CT (master) = 2 CT (slave) to ensure that the master output pulse, which occurs first, has a longer pulse duration and, subsequently, resets the slave regulators.