I need 5v at 380mA when powered from a car battery, nominally 13.2V, but varying between 10v and 14.5V
At 14.5v supply, a 7805 is dissipating 3.6 watts and a serious heatsink (incompatible with the overall product design) is required :(
So I've discovered the single component SM regulator, but the product choice seems huge.
Cost is fairly important, plus availability in the UK and US.
So which one would you choose?..or would you do it a different way?
(...and as I'm not into SMPS's, are we saying that if I find one with 85% efficiency, the power dissipation will be 5*0.38*0.15 = 285mW - which would be nice!)