Preliminary Datasheet
Product Name
STK682-010-E
1．Case Outline：19 pins (See attached case outline dimensions.)
2．Function
：PWM
current control stepping motor driver
3．Application
：Industrial
equipment etc.
4．Features：
・Output
on-resistance (High side 0.3 Ω, Low side 0.25 Ω, Total 0.55 Ω; Ta = 25℃ IO = 2.5A)
,
・VMmax=36V(DC)，Iopmax=3.0A
・2,
1-2, W1-2, 2W1-2, 4W1-2, 8W1-2, 16W1-2, 32W1-2 phase excitation are selectable
・With
built-in automatic half current maintenance energizing function
・Over
current protection circuit
・Thermal
shutdown circuit
・Input
pull down resistance
・With
reset pin and enable pin
5．Absolute Maximum Ratings／Tc=25℃
Parameter
Symbol
Conditions
Ratings
36
3.0
6
6
-20 to +105
-40 to +125
Unit
V
A
V
V
℃
℃
supply voltage
Peak output current
Logic input voltage
VREF input voltage
VMmax
Iopmax
VINmax
VREFmax
Tc
Tstg
Operating substrate temperature
Storage temperature
6．Allowable Operating Ranges／Ta=25℃
Parameter
Symbol
Conditions
Ratings
9 to 32
0 to 5
0 to 5
0 to 3
Unit
V
V
V
V
A
A
A
Supply voltage
range
Logic input voltage range
VM
VIN
VCC
VREF
Io1
Io2
Io3
1-2Phase-ex，Tc≦90℃
1-2Phase-ex，Tc=105℃
2Phase-ex，Tc=105℃
VCC input voltage range
VREF
input voltage range
Output current1
Output current2
Output current3
3.0
2.5
1.8
RoHS DIRECTIVE PASS
130228HI
018-13-00**
No.1
STK682-010-E
7．Electrical Characteristics／Tc=25℃, VM=24V
Ratings
Parameter
Standby mode current drain
Current drain
Symbol
Conditions
Unit
min.
typ.
70
3.3
max.
100
4.6
mA
150
180
40
3
30
2.0
0.8
3.5
1.1
3.1
0.8
58
83
10
1
0.5
108
8
50
15
70
210
μA
IMstn
IM
VCC=”L”
VCC＝”H”，ENABLE="H"
No Load
Design guarantee
Design guarantee
Thermal shutdown temperature
Thermal hysteresis width
Logic pin input current
Logic input high-level voltage
Logic input low-level voltage
FDT pin high-level voltage
FDT pin middle-level voltage
FDT pin low-level voltage
Chopping frequency
Chopping frequency
Chopping oscillator circuit
threshold voltage
VREF pin input voltage
DOWN output residual voltage
Hold current switching frequency
Blanking time
Output block
TSD
ΔTSD
IinL1
IinH1
Vinh
Vinl
Vfdth
Vfdtm
Vfdtl
Fch
Iosc1
Vtup1
Vtdown1
Iref
VolDO
℃
℃
μA
μA
V
V
V
V
V
kHz
μA
V
V
μA
VIN=0.8V
VIN=5V
Pins 2,3,16,17,18,19
Pins 2,3,16,17,18,19
Pin 6
Pin 6
Pin 6
C1=100pF
VREF=1.5V，CLK=10kHz
Idown=1mA，CLK=Low
-0.5
40
1.6
1
mV
Hz
μs
0.42
0.35
50
Falert
Tb1
Ronu
Output on-resistance
Output leakage current
Diode forward voltage
IO=2.0A, high-side ON resistance
IO=2.0A, low-side ON resistance
0.30
0.25
Ω
Ω
μA
V
mV
μs
Rond
Ioleak
VD
VM=36V
ID=-2.0A
VREF=1.5V, Current ratio 100%
1.1
300
256
1.4
VRF
Current setting reference voltage
Output short-circuit protection block
Timer latch time
Tscp
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130228HI
No.2
STK682-010-E
8.
Block diagram
NFA
OUT1A
12
VM
13
OUT1B OUT2A
OUT2B
NFB
9
11
7
8
VREG2
14
Regulator 2
Output pre stage
Output pre stage
Output pre stage
Output pre stage
PGND
A
PGND
B
VREG1
1.2k
Regulator 1
Output control logic
VREF
5
Oscillator
Current select
circuit
Current select
circuit
DOWN
Decay Mode
setting circuit
OSC2
1
GND
10
PGND
15
VCC
16
M1
17 18
2
3
19
6
4
M2 M3 CW/CCW CLK
ENABLE FDT OSC1
9．Application Circuit Example
CW/CCW
CLK
2
3
7
STK682-010-E
5V
R1
VCC
M1
M2
M3
ENABLE
FDT
OSC1
GND
1
8
R2
C1
NFB
RFB
10
PGND
12
NFA
RFA
C3
C2
15
16
17
18
19
6
4
13
OUT1A
11
OUT2A
VREF
OUT1B
5
9
OUT2B
14
VM
VM=24V
GND
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130228HI
No.3
STK682-010-E
10．Pin Functions
Pin No.
Pin symbol
1
GND
2
CW/CCW
3
CLK
4
OSC1
5
VREF
6
FDT
7
OUT2B
8
NFB
9
OUT1B
10
PGND
11
OUT2A
12
NFA
13
OUT1A
14
VM
15
VCC
16
M1
17
M2
18
M3
19
ENABLE
Pin Functions
Circuit GND
Forward / Reverse signal input
Clock pulse signal input
Chopping frequency setting capacitor connection
Constant-current control reference voltage input
Decay mode select voltage input
B phase OUTB output
B phase current sense resistance connection
B phase OUTA output
Power GND
A phase OUTB output
A phase current sense resistance connection
A phase OUTA output
Motor supply connection
Chip enable input
Excitation-mode switching pin
Output enable signal input
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130228HI
No.4
STK682-010-E
11. Equivalent circuit diagram
Pin No.
3
2
19
18
17
16
Pin type
CLK
CW/CCW
ENABLE
M3
M2
M1
Equivalent Circuit Diagram
VREG1
10k
10KΩ
100k
100KΩ
GND
15
VCC
VREG1
15
Internal reset
Input pin
51kΩ
20k
20KΩ
10k
10KΩ
100kΩ
1μF
80k
80KΩ
GND
13
10
14
12
11
9
8
7
OUT1A
PGND
VM
NFA
OUT2A
OUT1B
NFB
OUT2B
5
14
11
13
3
9
9
7
11
7
13
10kΩ
10k
4
12
10
8
6 10
12
500Ω
500
500Ω
500
GND
Continued on next page.
018-13-00**
130228HI
No.5
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