TCK206G, TCK207G, TCK208G

2019-12-13

© 2019

Toshiba Electronic Devices & Storage Corporation

6

Application Note

1.

Application circuit example (top view)

The figure below shows the example of configuration for TCK206G, TCK207G and TCK208G.

1)

Input capacitor

to reduce voltage drop due to sharp changes in output current and also for improved stability of the power supply. When

2)

Output capacitor

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

μF is recommended.

3)

Control pin

Control pins for TCK206G and TCK207G are both Active High and TCK208G is Active Low. These control both the

pass-through n-ch MOSFET and the discharge n-ch MOSFET (except TCK206G), operated by the control voltage. Each

control pin is equipped with Schmitt trigger. When the control voltage level is High (Low; TCK208G), Output n-ch MOSFET

is ON state and discharge n-ch MOSFET is SW OFF state. When control voltage level is Low (High; TCK208G), and the

state of the MOSFETs is reversed. Also, pull down resistance equivalent to a few M

Ω is connected between CONTROL

and GND, thus the load switch IC is in SW OFF state even when CONTROL pin is OPEN(except TCK208G). 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.

Reverse current blocking(SW OFF state) function is designed in these products. This function is active at output n-ch

MOSEFT turned off.

However it does not assure for the suppression of uprising device operation. In use of these products, please read through

and understand dissipation idea for absolute maximum ratings from the above mention or our ‘Semiconductor Reliability

Handbook’. Then use these products under absolute maximum ratings in any condition. Furthermore, Toshiba recommends

inserting failsafe system into the design.

GND

VIN

CONTROL

LOAD

1.0

μF