16/27

XCL205/XCL206/XCL207 Series

■OPERATIONAL DESCRIPTION (Continued)

<CE/MODE Pin Function>

The operation of the XCL205/XCL206/ XCL207 series will enter into the shutdown mode when a low level signal is input to the

CE/MODE pin.

During the shutdown mode, the current consumption of the IC becomes 0μA (TYP.), with a state of high

impedance at the Lx pin and VOUT pin. The IC starts its operation by inputting a high level signal to the CE/MODE pin.

The input

to the CE/MODE pin is a CMOS input and the sink current is 0μA (TYP.).

（A）

（B）

（A）

（B）

Intermediate voltage can be generated by RM1 and RM2.

Please set the

value of each R1, R2, RM1, RM2 from

few hundreds kΩ to few hundreds MΩ. For switches, CPU open-drain I/O

port and transistor can be used.

(A)

SW_CE

SELECTED

STATUS

ON

Stand-by

OFF

Operation

(B)

SW_CE

SELECTED

STATUS

ON

Operation

OFF

Stand-by

(A)

SW_CE

SW_PWM/PFM

SELECTED

STATUS

ON

*

PWM/PFM

Automatic

Switching Control

OFF

ON

PWM Control

OFF

OFF

Stand-by

(B)

SW_CE

SW_PWM/PFM

SELECTED

STATUS

ON

*

Stand-by

OFF

ON

PWM Control

OFF

OFF

PWM/PFM

Automatic

Switching Control

CE/MODE

CE/MODE

V

V

V

V

IN

IN

DD

DD

SW_CE

SW_CE

R1

R2

< IC inside >

< IC inside >

< IC inside >

< IC inside >

CE/MODE

CE/MODE

RM1

RM2

RM1

RM2

SW_CE

SW_CE

SW_PWM/PFM

SW_PWM/PFM

V DD

V DD

V IN

V IN

●XCL205/XCL206 series - Examples of how to use CE/MODE pin

●XCL207 series - Examples of how to use CE/MODE pin