I'm looking for an LED driver which implements analog dimming by adjusting the internal reference voltage based on the duty cycle of a PWM input, similar to TI's TPS54201. I can't use this part though, as I want to simulate the circuit in LTSpice, so I'm looking for a part with an LTSpice model available. The maximum supply voltage in my design is 5 V and the continuous output current should be around 1 A. Could you please recommend a part that satisfies these requirements? Alternatively, if there is no such part in the portfolio, could you suggest a way to implement this dimming functionality using an available part?
Any advice is highly appreciated.