LB11850VA Datasheet, PDF (14/14 Pages) Sanyo Semicon Device – Monolithic Digital IC For Fan Motor Single-Phase Full-Wave Pre-Driver with Speed Control Function

LB11850VA
<C pin>
In order to connect a capacitor capable of smoothing the pin voltage to the C pin, the correlation given in the
following equation must be satisfied when f (Hz) serves as the input signal frequency of the CTL pin. (R is contained
inside the IC, and is 180kΩ (typ.).)
1/f = t < CR
The higher the capacitance of the capacitor is, the slower the response to changes in the input signal is.
CTL pin input inverted waveform
(same frequency)
5VREG
Connect a capacitor capable of
smoothing the pin voltage
1/f = t < CR
C pin
CTL pin
CTL circuit
180kΩ
VREF circuit
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PS No.A0609-14/14