TPS2105DBVT Datasheet PDF - TI

●The TPS2105DBVT is a dual-input single-output Power Switch designed to provide uninterrupted output voltage when transitioning between two independent power supplies. Both devices combine one n-channel (250m) MOSFET with a single output. The p-channel MOSFET (IN2) is used with auxiliary power supplies that deliver lower current for standby modes. The n-channel MOSFET (IN1) is used with a main power supply that delivers higher current required for normal operation. Low on-resistance makes the n-channel the ideal path for higher main supply current when power-supply regulation and system voltage drops are critical. When using the p-channel MOSFET, quiescent current is reduced to 0.75µA to decrease the demand on the standby power supply. The MOSFETs in the TPS2105 do not have the parasitic diodes, typically found in discrete MOSFETs, thereby preventing back-flow current when the switch is off.

● Advanced switch control logic

● CMOS and TTL compatible enable input

● Controlled rise, fall and transition times