I'm using my first TCA0372 as a ~1-2 Watt heater drive. Unfortunately I've blown it up three times... twice by accident and this morning on purpose. Apparently the TCA can't have it's output shorted to ground. I_out max is 1.0 A (DC),
So I need either some output protection.. current limit. Or another opamp that does ~100 mA, or I'll have to do some transistor pass element.. it's dead slow so speed is not important.
thoughts? George H.