ZHCSDK9A March 2015 – April 2015 TPS22953 , TPS22954
PRODUCTION DATA.
The device is designed to operate from a VBIAS range of 2.5V to 5.7V and a VIN range of 0.7 V to 5.7 V. The power supply should be well regulated and placed as close to the device terminals as possible. It must be able to withstand all transient and load current steps. In most situations, using an input capacitance of 1 µF is sufficient to prevent the supply voltage from dipping when the switch is turned on. In cases where the power supply is slow to respond to a large transient current or large load current step, additional bulk capacitance may be required on the input.
The requirements for larger input capacitance can be mitigated by adding additional capacitance to the CT pin. This will cause the load switch to turn on more slowly. Not only will this reduce transient inrush current, but it will also give the power supply more time to respond to the load current step.