STK681-332-E Sanyo Semicon Device, STK681-332-E Datasheet - Page 10

• Manufacturer Part Number: STK681-332-E
• Description: Forward/Reverse Motor Driver
• Manufacturer: Sanyo Semicon Device

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[Reduced voltage detection]
(1) V DD
(2) V CC
Control IC power (V DD ) rising edge
The internal control IC of the driver has a function that detects reduced voltage when V CC is supplied, to prevent
insufficient internal P-channel MOSFET gate voltage. The reduced voltage detection level is set to V CC = 8.8V
(typ.).
The internal control IC of the driver has a function that detects reduced voltage when V DD is supplied. This reduced
voltage threshold level is set to 4V (typ.), and the MOSFET gate voltage specification is 5V ±5%. So, a current flow
through the output when V DD is rising results in the power stress to the MOSFET due to insufficient gate voltage.
To prevent this power stress, set ENABLE = Low when V DD < 4.75V, which is outside the normal operating
supply voltage range of the MOSFET.
Control IC power on reset
V CC
8.8V
ENABLE signal input
MOSFET
off
V DD , ENABLE Signals Input Timing
STK681-332-E
4Vtyp
3.8Vtyp
MOSFET
off
No. A1591-10/14
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