Part Number: TL1963A-Q1
Hi,
I have used LDO P/N TL1963AQKTTRQ1 in one of my design for 5V to 1.8V step down.
Design details:
Vin: 4.5V to 5.5V
Vout (expected): 1.8V @500mA
ADJ pin resistors: R2: 1.96k Ohms, R1: 4.02k Ohms
While probing the Vout, I observed that at soon as the 5V input turns up, Vout of TL1963AQKTTRQ1 shoots up to 2V and linearly drops to 1.82V in 100uSec.
This is an issue as the devices I have connected at Vout has absolute maximum rating of 1.89V, thus getting damaged because of initial voltage overshoot.
Kindly suggest if there is any issue in my design and resolution to fix this problem, if any.
Attached snapshot of my design and DSO snap for 1.8V overshoot.
Best Regards,
Chandan Kumar