The IN, BIAS, and EN pin voltages can be sequenced in any order without causing damage to the device. The start up is always monotonic regardless of the sequencing order or the ramp rates of the IN, BIAS, and EN pins. For optimum device performance, V_BIAS should be present before enabling the device because the device internal circuitry is powered by V_BIAS. For part numbers with an A following the voltage digits (example: TPS7A11xxPA), the shutdown current is independent of sequencing. For part numbers without an A following the voltage digits (example: TPS7A11xxP), the shutdown current into the BIAS input may increase by approximately 2 µA if the BIAS supply was present before the LDO was enabled and then disabled. This behavior can be avoided with part numbers without an A by applying a logic high enable signal before applying the BIAS supply.

See the Recommended Operating Conditions table for proper voltage ranges of the IN, BIAS, and EN pins.