7/32

XC8101

Series

<CE Pin>

The XC8101 enables an output P-channel MOSFET switch and the IC internal circuitry to turn off by the signal to the CE pin. In

The output voltage becomes unstable when the CE pin is opened. If the input voltage to the CE pin is within the specified

threshold voltages, the logic is fixed and the XC8101 will operate normally. However, supply current may increase as a result

of the shoot-through current of internal circuitry when the medium level voltage is input to the CE pin.

＜

Input Capacitor＞

to the output side of the IC, input voltage ringing may occur when the IC is turned on. In order to reduce the ringing, an input

placed as close as the IC.

<CL Auto-Discharge Function>

V: Output voltage after starting discharge

t: Discharge time

<Current Limiter, Short-Circuit Protection>

The XC8101 series contains a constant current limiter and foldback current circuitry. The constant current limiter operates to

limit output current and the foldback current circuitry operates as short circuit protection for the output pin.

When the load current reaches the limit current, the constant current limiter operates and the output voltage drops. The output

voltage further, then the foldback current circuitry operates to decrease the output current. When the output pin is short-circuited

to the ground, the output current drops and maintains a flow about 30mA.

■OPERATIONAL EXPLANATION

1.

Please use this IC within the stated absolute maximum ratings. Operation beyond these limits may cause degrading or

permanent damage to the device.

2.

The X8101 goes into an undefined operation when the CE pin is left open. The CE pin shall be tied to low or high level.

■NOTES ON USE