IES5521A
Overview
The IES5521A is a derivative of the OM1654A, but offering the extra safety feature of a nominal 1 hour time-out. This is a key safety requirement for a range of personal and home appliance applications.
- Time-out function stops triac operation after a set time.
- Reset time-out by turning mains supply off and on.
- Low external component count
- Constant ON cycle time, with proportional OFF time
- All ON cycles consist of an integral number of mains cycles
- No DC component in the mains supply
- On chip circuit protection against triac gate spikes
- Low supply current requirement
- Sensor AC powered, thus minimising DC supply and filtering needs
- Separate power supply input, allowing easy gate pulse width adjustment
