Ultra-low leakage load switch supports very low operating voltages

The Texas Instruments TPS22916xx is a small, single channel load switch using a low leakage P-Channel MOSFET for minimum power loss. Advanced gate control design supports operating voltages as low as 1V with minimal increase in ON-Resistance and power loss. Multiple timing options are available to support various system loading conditions. For heavy capacitive loads, the slow turnon timing in the C version minimizes the inrush current. In cases with light capacitive loads, the fast timing in the B version reduces required wait time. The switch ON state is controlled by a digital input that is capable of interfacing directly with low-voltage control signals. Both Active High and Active Low (L) versions are available. When power is first applied, a Smart Pull Down is used to keep the ON pin from floating until system sequencing is complete. Once the ON pin is deliberately driven high (=VIH), the Smart Pull Down is disconnected to prevent unnecessary power loss. The device is available in a small, space saving 0.74mm × 0.74mm, 0.4mm pitch, 0.5mm height four-pin WCSP package (YFP). The device is characterized for operation over a temperature range of –40C to +85C.