LB11660RV Datasheet, PDF (7/9 Pages) Sanyo Semicon Device – Single-Phase Full-Wave Driver

LB11660RV
*5 <Hall input>
Wiring need to be short to prevent carrying of the noise. The Hall input circuit is a comparator having a hysteresis of
20mV. It is recommended that the Hall input level be more than three times (60mVp-p) this hysteresis.
*6 < PWM oscillation frequency setting capacitor >
The oscillation frequency is 23kHz when CP = 200pF and 46kHz when CP = 100pF, and this serves as the PWM
fundamental frequency.
For the most part, the PWM frequency can be obtained from the following formula:
f [kHz]  (4.610⁶) ÷C [pF]
*7 <RD output>
This is the open collector type output, which outputs ''L'' during rotation. It is set to 'OFF' when a lock is detected.
This output is left open when not in use.
*8 <HB pin>
This is a Hall element bias pin, that is, the 1.25V constant-voltage output pin.
*9 <RMI pin>
Lowest speed setting pin for speed control.
The minimum output duty setting is made with R3 and R4. The R4 is left open to stop operation at a duty ratio
of 0%.
Rotation Speed Control Chart
Duty100%
PWM
DUTY(%)
Duty0%
VPWML
RMI
VTH (V)
VPWMH
Minimum output duty
VTH voltage
RMI voltage
CPWM
Rotation set to
minimum speed
0V
ON Duty
PWM control
variable speed
Full speed
2.5V
0.5V
ON
OFF
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