TCK101G/102G

2014-03-01

6

Application Note

1.

Application circuit example (top view)

The figure below shows the recommended configuration for TCK101G and TCK102G.

is recommended to use input capacitors to reduce voltage drop due to sharp changes in output current and also

2) Output capacitor

there is a possibility of overshoot or undershoot caused by output load transient response, board layout and

recommended.

3) Control pin

A control pins for TCK101G and TCK102G are both Active High, which controls both the pass-through p-ch

MOSFET and the discharge n-ch MOSFET (only for TCK101G), operated by the control voltage and Schmitt

trigger. When the control voltage level is High, p-ch MOSFET is ON state and n-ch MOSFET is OFF state. When

control voltage level is Low, and the state of the MOSFETs is reversed. Also, pull down resistance equivalent to a

few MΩis connected between CONTROL and GND, thus the load switch IC is in OFF state even when CONTROL

pin is OPEN. In addition, CONTROL pin has a tolerant function such that it can be used even if the control voltage

is higher than the input voltage.

Control

Voltage

Output

Voltage

HIGH

ON

LOW

OFF

OPEN

OFF

GND

VIN

CONTROL

LOAD