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SKT672-050-E Datasheet(PDF) 2 Page - ON Semiconductor

Part # SKT672-050-E
Description  Stepping Motor Driver
Download  19 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

SKT672-050-E Datasheet(HTML) 2 Page - ON Semiconductor

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STK672-050-E
No.5228-2/19
Features
• Can implement stepping motor drive systems simply by providing a DC power supply and a clock pulse generator.
<Control Block Features>
• One of five drive types can be selected with the drive mode settings (M1, M2, and M3)
1) 2 phase excitation drive
2) 1-2 phase excitation drive
3) W1-2 phase excitation drive
4) 2W1-2 phase excitation drive
5) 4W1-2 phase excitation drive
• Provides four freely selectable modes for the vector locus during microstepping drive: circular mode, one inside mode,
and two outside modes.
• Phase retention even if excitation is switched.
• The excitation phase state can be verified in real time using the MO1, MO2, and MOI signal output pins.
• The CLK input counter block can be selected to be one of the following by the high/low setting of the M3 input pin.
1) Rising edge only
2) Both rising and falling edges
• The CLK and RETURN input pins include built-in malfunction prevention circuits for external pulse noise.
• ENABLE and RESET pins provided. These are Schmitt trigger inputs with built-in 20kΩ (typical) pull-up resistors.
• No noise generation due to the difference between the A and B phase time constants during motor hold since external
excitation is used.
• Microstepping operation supported even for small motor currents, since the reference voltage Vref can be set to any
value between 0V and 1/2VCC2.
<Driver Block>
• External excitation PWM drive allows a wide operating supply voltage range (VCC1 = 10 to 45V) to be used.
• Current detection resistor (0.2Ω) built-in the hybrid IC itself.
• Power MOSFETs adopted for low drive loss.
• Provides a motor output drive current of IOH = 3.0A.
Specifications
Absolute Maximum Ratings at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage 1
VCC1 max
No signal
52
V
Maximum supply voltage 2
VCC2 max
No signal
-0.3 to +7.0
V
Input voltage
VIN max
Logic input pins
-0.3 to +7.0
V
Output current
IOH max
0.5s, 1 pulse, when VCC1 applied.
Load: R = 5
Ω, L = 10mH for each phase.
4.0
A
Repeated avalanche capacity
Ear max
38
mJ
Allowable power dissipation
Pd max
θc-a = 0
25
W
Operating substrate temperature
Tc max
105
°C
Junction temperature
Tj max
150
°C
Storage temperature
Tstg
-40 to +125
°C
Allowable Operating Ranges at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Supply voltage 1
VCC1
With signals applied
10 to 45
V
Supply voltage 2
VCC2
With signals applied
5 ± 5%
V
Input voltage
VIH
0 to VCC2V
Phase driver withstand voltage
VDSS
Tr1, 2, 3, and 4 (the A, A, B, and B outputs)
100 (min)
V
Output current
IOH
Duty 50%
3.0
A
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.


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