BU97941FV Datasheet, PDF (20/25 Pages) Rohm – Multifunction LCD Segment Driver

BU97941FV MAX 104 segments (SEG26×COM4)
Datasheet
●Operational Notes - continued
(11) External capacitor
In order to use a ceramic capacitor as the external capacitor, determine the constant with consideration given to a
degradation in the nominal capacitance due to DC bias and changes in the capacitance due to temperature, etc.
(12) No Connecting input terminals
In terms of extremely high impedance of CMOS gate, to open the input terminals causes unstable state. And unstable
state brings the inside gate voltage of p-channel or n-channel transistor into active. As a result, battery current may
increase. And unstable state can also causes unexpected operation of IC. So unless otherwise specified, input terminals
not being used should be connected to the power supply or GND line.
(13) Rush current
When power is first supplied to the CMOS IC, it is possible that the internal logic may be unstable and rush current may
flow instantaneously. Therefore, give special condition to power coupling capacitance, power wiring, width of GND wiring,
and routing of connections.
Status of this document
The Japanese version of this document is formal specification. A customer may use this translation version only for a reference to
help reading the formal version.
If there are any differences in translation version of this document formal version takes priority.
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