The charge pumps in the MAX3221/3223/3243 power up at about the same time with the V+ charge pump reaching its output voltage slightly before the V- charge pump as seen in Figure 5 (b). The V+ supply will also shut off quicker than the V- supply.
The charge pumps in the MAX3221/3223/3243 power up at about the same time with the V+ charge pump reaching its output voltage slightly before the V- charge pump as seen in Figure 5 (b). The V+ supply will also shut off quicker than the V- supply.