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Hello team,
The customer would like to design adjustable output from 3V to 7.5V using LMZ36002.
In this case, I have questions about the setting of VERSA, COMP and VBSEL pins.
Q1) VERSA, COMP pins
The VERSA, COMP pins are connected to VADJ pin when the output is 3V or higher, and are floating when the output is less than 3.0V.
Is it possible that the output is unstable when VERSA, COMP pins are connected to VADJ pin even if the output is 2.95V? Can we believe that you designed with the margin about the output voltage?
Q2) VBSEL
VBSEL is connected to VOUT when the output is 4.5V or larger and is connected to AGND when the output is 4.5V or less.
Which do you recommend to connect to VOUT or AGND when the customer would like to design adjustable output from 3V to 7.5V?
Your advice would be so appreciated.
Best Regards,
Akihisa Tamazaki
Q1: Yes, connecting VERSA-COMP to VSEL at VOUT = 2.95V should be fine for stability. Ensure you follow the datasheet recommendations for COUT since this will play more of a role than the 0.05V deviation from VERSA-COMP recommendations.
Q2: Connect VBSEL to GND.
-Sam