STMicroelectronics VN5MB02-E Motorbike Blinker Smart Power Driver is a smart power driver for a motorbike blinker and it is connected between the battery positive terminal (VCC pin) and a mechanical switch to the right or left side. As soon as the series switch connects the OUT pin to the bulbs, the device begins to turn on/off with a 50% duty cycle. External low voltage capacitors are needed for supplying the device (CEXT), for stabilizing the internal voltage regulator output (CREG) and for setting the oscillating frequency (CFREQ). When a low load is detected, output current lower than Idf, flashing frequency is automatically doubled. The internal current shutdown latches the VN5MB02-E when a heavy overload occurs; thermal limitation reduces the stress on the device if the junction temperature raises. If the overload condition lasts more than a time, tfault, the VN5MB02-E is latched.