9.2.1 Design Requirements

A typical operation for the TVS0500 would be protecting a nominal 5 V input to an LDO similar to Figure 10. In this example, the TVS0500 is protecting the input to a TPS768, a standard 1 A LDO with an input voltage range of 2.7 V to 10 V. Without any input protection, if a surge event is caused by lightning, coupling, ringing, or any other fault condition this input voltage will rise to hundreds of volts for multiple microseconds, violating the absolute maximum input voltage and harming the device. An ideal surge protection diode will maximize the useable voltage range while still clamping at a safe level for the system, TI's Flat-Clamp technology provides the best protection solution.