STK681-300 Sanyo Semicon Device, STK681-300 Datasheet - Page 5

• Manufacturer Part Number: STK681-300
• Description: Forward/Reverse Motor Driver
• Manufacturer: Sanyo Semicon Device

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Motor Drive Conditions (H: High-level input; L: Low-Level Input)
* IN1=IN2=H and INH=L are prohibited during motor rotation.
Notes
(1) Be sure to set the capacitance of the power supply bypass capacitor, C1, so that the ripple current of the capacitor,
(2) Although the Vref2 pin is kept open, if connected to the GND or S.P pin, the overheating current control circuit
(3) Fixed current chopping operations based on TR1 and TR2 are used for current control. The timing given below is
(4) Do not connect the N.C pins shown in the internal block diagram or sample application circuit to a circuit pattern on
(5) This IC is not designed for use in an H-bridge driver for power supplies because the I/O response time of its GND
Stop 1 (standby)
Stop 2 (supply power turned off by input during
motor rotation)
Forward (CW)
Reverse (CCW)
Brake
which varies as motor current increases, falls within the allowed range.
ceases to function.
used for OUT1 or OUT2 voltage output and for TR1 or TR2 collector current.
the PCB.
side driving device, required when switching the motor rotational direction, is several scores of microseconds.
It should be used only for DC motor drivers.
TR1 or TR2
Collector current
Motor current
OUT1 or OUT2
Output voltage
50μs
IN1
H
H
H
H
L
L
L
STK681-300
IN2
H
H
H
L
H
L
L
H or L
L or H
INH
H
H
H
L
L
When motor is not rotating
Stop signal that is applied when the motor is
running and used to turn off power.
No input signal is needed that turns off the
upper- and lower-side drive devices when
switching the rotational direction.
GND side MOSFET ON
V CC 1-Vsat1
GND
I O peak (current setting value)
0A
I O peak (current setting value)
0A
Remarks
No. A0760-5/10
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