Products - Load Switches

Power Saving Push Button Load Switch

The XC6192 is a push button load switch available in an ultra-small 2.0mm x 2.0mm x 0.33mm USP-8B06 package. The IC operates between 2.5V~6.0V and consumes only 0.01uA (typ) in stand-by mode thereby contributing to battery life extension.

By adding the XC6192 between the battery and the main power circuit (which could be a LDO or a DCDC) on the board, or between the battery and the MPU if the MPU is connected directly to the battery without any power circuit, it is possible to completely shut the line from the battery, which in turn stops the battery draining over time.We call this function “Ship Mode” or “Shutdown Mode”.

Both the XC6192A and the XC6192B can be used as both a mains power switch as well as a switch for shipping/storage. For shipping, once the application on which the XC6192 is used has been through final testing following production, the circuit can be put into “Ship Mode” very easily by inputting a single pulse ("H" level) to the XC6192’s SHDN pin. After several months of storage, a push button signal turns on the switch and the circuit will start-up with a battery that still has enough charge to allow use straight out of the box!

The turn-on delay time can be pre-set to either 0.5s, 1.0s, 3.0s or 5.0s and it is recommended to set a longer turn-on time for sensitive devices in order to avoid possible mistaken turn-on if set shorter. However, in most cases 0.5s will be OK.

Although the turn-off function with the XC6192A and XC6192B is via a signal to the SHDN pin, with the XC6192A, there is also the option of setting a push button turn-off with a pre-set delay time of either 3s, 5s, 10s, or 15s. This is particularly useful if there is a system freeze on the device and in such cases, a longer turn-off time is recommended to avoid any system errors.

The XC6192 series also has a Power Good (PG) pin which is a flag signal output pin to notify that the rise of the output voltage has been completed.