SKT672-080-E Datasheet, PDF (2/18 Pages) ON Semiconductor – Stepping Motor Driver

STK672-080-E
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
• Phase retention even if excitation is switched.
• Provides the MOI phase origin monitor pin.
• 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 input pin includes 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 (0.15Ω) built-in the hybrid IC itself.
• Power MOSFETs adopted for low drive loss.
• Provides a motor output drive current of IOH = 2.8A. (at Tc = 105°C)
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage 1
Maximum supply voltage 2
Input voltage
Output current
Repeated avalanche capacity
Allowable power dissipation
Operating IC substrate temperature
Junction temperature
Storage temperature
Symbol
VCC1 max
VCC2 max
VIN max
IOH max
Ear max
Pd max
Tc max
Tj max
Tstg
Conditions
No signal
No signal
Logic input pins
0.5s, 1 pulse, with VCC1 applied
θc-a = 0
Ratings
Unit
52
V
-0.3 to +7.0
V
-0.3 to +7.0
V
3.3
A
30
mJ
8
W
105
°C
150
°C
-40 to +125
°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.
Allowable Operating Ranges at Ta = 25°C
Parameter
Symbol
Supply voltage 1
Supply voltage 2
Input voltage
Phase driver withstand voltage
Output current 1
VCC1
VCC2
VIH
VDSS
IOH1
Output current 2
IOH2
Conditions
With signals applied
With signals applied
Tr1, 2, 3, and 4 (the A, A, B, and B outputs)
Tc = 105°C, CLK ≥ 200Hz
Tc = 80°C, CLK ≥ 200Hz
Ratings
Unit
10 to 45
V
5 ± 5%
V
0 to VCC2
V
100 (min)
V
2.8
A
3
A
No.6507-2/18