LV8136V SANYO [Sanyo Semicon Device], LV8136V Datasheet - Page 19

• Manufacturer Part Number: LV8136V
• Description: Bi-CMOS IC For Brushless Motor Drive Direct PWM Drive, Quiet Predriver IC
• Manufacturer: SANYO [Sanyo Semicon Device]

6. VREG Stabilization
7. Forward/Reverse Switching (F/R pin)
8. TH Pin
9. FAULT Pin
10. PWM Frequency Setting
A capacitor of at least 0.1μF must be used to stabilize the VREG voltage, which is the control circuit power supply. The
ground lead of that capacitor must be located as close as possible to the control system ground (SGND) of the IC.
Switching between forward rotation and reverse rotation must not be undertaken while the motor is running.
The TH pin must normally be pulled up to the 5V regulator for use. When it has been set to low, the outputs of L IN 1,
L IN 2 and L IN 3 as well as H IN 1, H IN 2 and H IN 3 are low.
The FAULT pin must normally be pulled up to the 5V regulator for use. When it has been set to low, the outputs of
L IN 1, L IN 2 and L IN 3 as well as H IN 1, H IN 2 and H IN 3 are low.
Components with good temperature characteristics must be used.
An oscillation frequency of about 17kHz is obtained when a 2200pF capacitor and 15kΩ resistor are used. If the PWM
frequency is too low, switching noise will be heard from the motor; conversely, if it is too high, the output power loss
will increase. For this reason, a frequency between 15kHz and 30kHz or so is desirable. The capacitor ground must be
connected as close as possible to the control system ground (SGND pin) of the IC to minimize the effects of the outputs.
fCPWM ≈ 1/ (1.78CR)
This catalog provides information as of February, 2012. Specifications and information herein are subject
to change without notice.
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LV8136V
PS No.A2005-19/19