XC9235_1 Datasheet, PDF (16/33 Pages) Torex Semiconductor – 600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters

XC9235/XC9236/XC9237 Series
˙OPERATIONAL DESCRIPTION (Continued)
<CE/MODE Pin Function>
The operation of the XC9235/XC9236/XC9237 series will enter into the shut down mode when a low level signal is input to the
CE/MODE pin. During the shutdown mode, the current consumption of the IC becomes 0ЖA (TYP.), with a state of high
ç^{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}
ç^{input to the CE/MODE pin is a CMOS input and the sink current is 0ЖA (TYP.).}
ç
ç _{˔XC9235/XC9236 series - Examples of how to use CE/MODE pin}
ç
(A)
SWʊCE
ON
OFF
STATUS
Stand-by
Operation
(B)
SWʊCE
ON
OFF
STATUS
Operation
Stand-by
(A)
(B)
˔XC9237 series - Examples of how to use CE/MODE pin
(A)
SWʊCE
ON
OFF
OFF
SWʊPWM/PFM
*
ON
OFF
STATUS
PWM/PFM Automatic Switching Control
PWM Control
Stand-by
(B)
SWʊCE SWʊPWM/PFM
STATUS
ON
*
Stand-by
OFF
ON
PWM Control
(A)
(B)
OFF
OFF
PWM/PFM Automatic Switching Control
Intermediate voltage can be generated by RM1 and RM2. Please set the value of each R1, R2, RM1, RM2 from
few hundreds kЊ to few hundreds MЊ. For switches, CPU open-drain I/O port and transistor can be used.ç
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