10/30

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NOTES ON USE

<CL High Speed Auto-Discharge Function>

pin, which enables the whole IC circuit put into an OFF state, is inputted to the CE pin via the N-channel transistor located

by the following formulas.

where

V : Output voltage after discharge

t: Discharge time

τ

For the XC6220A/C series, output voltage may rises when in the high stand-by mode. Please note that in that case, the

typical characteristics may worse. When the XC6220A/C series is used, please be noted the characteristics shown below.

XC6220A 501x x

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

20

40

60

80

100

Ta (℃)

Output V ol ta g e vs . Input V ol ta g e

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

1.0

2.0

3.0

4.0

5.0

6.0

VIN (V)

<Thermal Shutdown>

When the junction temperature of the built-in driver transistor reaches the temperature limit level (150℃ TYP.), the thermal

shutdown circuit operates and the driver transistor will be turned OFF. The IC resumes its operation when the thermal

shutdown function is released and the IC’s operation is automatically restored because the junction temperature drops to the

level of the thermal shutdown release voltage.

<Inrush Current Protection>

The XC6220 series includes an inrush current protection circuit.

approximately 1 ms.

* Please note that the device can not provide the output current beyond 700 mA for a period of approximately 1 ms after the

CE pin goes high.

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OPERATIONAL EXPLANATION (Continued)

exceeded.

2. Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output current.