stk672-070-e Sanyo Semiconductor Corporation, stk672-070-e Datasheet - Page 2

• Manufacturer Part Number: stk672-070-e
• Description: Unipolar Constant-current Chopper External Excitation Pwm Circuit With Built-in Microstepping Controller Stepping Motor Driver Sine Wave Drive Output Current 1.5a No Heat Sink*
• Manufacturer: Sanyo Semiconductor Corporation

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)
• 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.
• 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
• 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 (0.22Ω) built-in the hybrid IC itself.
• Power MOSFETs adopted for low drive loss.
• Provides a motor output drive current of I OH = 1.5A. (at Tc = 105°C)
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 IC substrate temperature
Junction temperature
Storage temperature
Supply voltage 1
Supply voltage 2
Input voltage
Phase driver withstand voltage
Output current 1
Output current 2
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
I OH 1
I OH 2
Tstg
V IH
STK672-070-E
No signal
No signal
Logic input pins
0.5s, 1 pulse, with V CC 1 applied
θc-a = 0
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
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
2.0
6.5
1.5
1.7
52
25
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Unit
Unit
mJ
°C
°C
°C
W
V
V
A
V
V
V
V
A
A
V