stk672-050-e ON Semiconductor, stk672-050-e Datasheet - Page 2

• Manufacturer Part Number: stk672-050-e
• Description: Thick-film Hybrid Ic Unipolar Constant-current Chopper External Excitation Pwm Circuit With Built-in Microstepping Controller Stepping Motor Driver Sine Wave Drive Output Current 3.0a No Heat Sink*
• Manufacturer: ON Semiconductor

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)
• Provides four freely selectable modes for the vector locus during microstepping drive: circular mode, one inside mode,
• 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.
• 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
• Microstepping operation supported even for small motor currents, since the reference voltage Vref can be set to any
<Driver Block>
• External excitation PWM drive allows a wide operating supply voltage range (V CC 1 = 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 I OH = 3.0A.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Allowable Operating Ranges at Ta = 25°C
Maximum supply voltage 1
Maximum supply voltage 2
Input voltage
Output current
Repeated avalanche capacity
Allowable power dissipation
Operating substrate temperature
Junction temperature
Storage temperature
Supply voltage 1
Supply voltage 2
Input voltage
Phase driver withstand voltage
Output current
and two outside modes.
excitation is used.
value between 0V and 1/2V CC 2.
1) Rising edge only
2) Both rising and falling edges
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
Parameter
Parameter
V CC 1 max
V CC 2 max
I OH max
V IN max
Ear max
Symbol
Pd max
Tc max
Symbol
Tj max
V CC 1
V CC 2
V DSS
Tstg
I OH
V IH
STK672-050-E
No signal
No signal
Logic input pins
0.5s, 1 pulse, when V CC 1 applied.
Load: R = 5Ω, L = 10mH for each phase.
θc-a = 0
With signals applied
With signals applied
Tr1, 2, 3, and 4 (the A, A, B, and B outputs)
Duty 50%
Conditions
Conditions
Ratings
Ratings
-0.3 to +7.0
-0.3 to +7.0
-40 to +125
0 to V CC 2
100 (min)
10 to 45
5 ± 5%
105
150
4.0
3.0
52
38
25
No.5228-2/19
Unit
Unit
mJ
°C
°C
°C
W
V
V
A
V
V
V
V
A
V