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PDF STK681-300 Data sheet ( Hoja de datos )
| Número de pieza | STK681-300 | |
| Descripción | Forward/Reverse Motor Driver | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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Ordering number : ENA0760A
STK681-300
Thick-Film Hybrid IC
Forward/Reverse Motor Driver
http://onsemi.com
Overview
The STK681-300 is a hybrid IC for use in current control forward/reverse DC motor driver with brush.
Applications
• Office photocopiers, printers, etc.
Features
• Allows forward, reverse, and brake operations in accordance with the external input signal.
• 2.9A startup output current and 5A peak brake output current.
• Incorporating a current detection resistor (0.10Ω), fixed current control is possible.
• Obviate the need to design for the dead time in order to turn off the upper- and lower drive devices when switching
between the forward and reverse operation mode.
Specifications
Absolute maximum ratings at Tc = 25°C
Parameter
Maximum supply voltage 1
Maximum supply voltage 2
Input voltage
Output current
Brake current
Allowable power dissipation
Operating substrate temperature
Junction temperature
Storage temperature
Symbol
VCC1 max
VCC2 max
VIN max
IO max
IOB max
PdPK max
Tc max
Tj max
Tstg
Conditions
VCC2=0V
No signal
Logic input pins
VCC2=5.0V, DC current
VCC2=5.0V, square wave current, operating time 12ms
(single pulse)
No heat sink
Ratings
52
-0.3 to +7.0
-0.3 to +7.0
2.9
5
3.1
105
150
-40 to +125
unit
V
V
V
A
A
W
°C
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Semiconductor Components Industries, LLC, 2013
May, 2013
62911HKPC 018-08-0006/70908HKIM No. A0760-1/10
1 page  
STK681-300
Motor Drive Conditions (H: High-level input; L: Low-Level Input)
Stop 1 (standby)
Stop 2 (supply power turned off by input during
motor rotation)
IN1
H
H
H
IN2 INH
Remarks
H
H or L
When motor is not rotating
H H Stop signal that is applied when the motor is
L H running and used to turn off power.
Forward (CW)
Reverse (CCW)
L HH
H L L No input signal is needed that turns off the
upper- and lower-side drive devices when
L H L switching the rotational direction.
Brake
LL
* IN1=IN2=H and INH=L are prohibited during motor rotation.
L or H
GND side MOSFET ON
Notes
(1) Be sure to set the capacitance of the power supply bypass capacitor, C1, so that the ripple current of the capacitor,
which varies as motor current increases, falls within the allowed range.
(2) Although the Vref2 pin is kept open, if connected to the GND or S.P pin, the overheating current control circuit
ceases to function.
(3) Fixed current chopping operations based on TR1 and TR2 are used for current control. The timing given below is
used for OUT1 or OUT2 voltage output and for TR1 or TR2 collector current.
OUT1 or OUT2
Output voltage
VCC1-Vsat1
GND
TR1 or TR2
Collector current
Motor current
50μs
IO peak (current setting value)
0A
IO peak (current setting value)
0A
(4) Do not connect the N.C pins shown in the internal block diagram or sample application circuit to a circuit pattern on
the PCB.
(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
side driving device, required when switching the motor rotational direction, is several scores of microseconds.
It should be used only for DC motor drivers.
No. A0760-5/10
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet STK681-300.PDF ] | |
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