Category: Datasheet/Specs
Product Number: LT3091
Hi,
I want to use 4-Quadrant topology on my design. For this reason, I simulated the circuit shown on LT3091 datasheet which I attach below:
On this circuit Vout min is Vee+Vdrop_LT3091 where Vdrop_LT3091=300mV. If I have Vee=-4.5V, Vout min technically is -4.2V. However, the simulation result show me a large ripple when I try Vout=-4V with Vee=-4.5V.
Simulation result implementing the circuit shown on LT3091 datasheet (GND pin tied to OUT pin)
However, If I tie LT3091 GND pin to ground instead of OUT pin it works fine. Simulation result when GND pin is tied to ground:
What is wrong? The formula Vout_min=Vee+Vdrop_LT3091 or to tie gnd pin to out pin?
Thank you in advance
