Hi,
I have a TPS65262-1 regulator configured to output 3.3V on BUCK3. LVIN1 and LVIN2 are connected to the output of BUCK3 (3.3V). LDO1 is configured to output 1.2V, and LDO2 is configured to output 1.66V. I would like to enable LDO1 and LDO2 with the BUCK3 output. Can I just tie the output of BUCK3 to LEN1 and LEN2? Paragraph 2 of section 9.3.2 of the datasheet says that the enable pins should be driven using open-drain logic. Is this required? What is the downside of driving the enable pins with a push-pull output? I.e. what is the downside of tying LENx to 3.3V?
How do you suggest that I enable the LDO regulators with the output of one of the buck regulators?
Thanks.