Stepper Motor Driver IC
MTD1121F
■Electrical Characteristics
Ta=25℃,Vcc=3.3V unless otherwise specified
Parameter
Output transistor saturation voltage
Output transistor leak current
Flywheel diode forward drop
Flywheel diode leak current
Flyback diode forward drop
Flyback diode leak current
Logic supply current
Symbol
VCE(SAT)
ICER
Condition
Ic=0.9A
MIN
-
TYP
1.1
-
MAX
1.5
10
Unit
V
VCER=80V
IFFW=0.9A
VRFW=80V
IFFB=0.9A
VRFB=80V
-
μA
V
VFFW
IRFW
VFFB
IRFB
-
1.2
-
1.5
10
-
μA
V
-
1.3
-
2
-
10
μA
mA
V
Icc
-
30
-
100
Vcc
0.6
10
IN"H" input voltage
VINH
VINL
2.0
GND
-
IN"L" input voltage
-
V
IN"H" input current
IINH
VIN=3.3V
VIN=0V
Vref=0V
Vs=0V
-
μA
μA
μA
μA
kHz
μs
V
IN"L" input current
IINL
-
-10
-1
-
-50
-50
-50
-
Vref input current
Iref
-
Vs input current
Isence
fCHOP
tOFF
-
Chopping frequency
-
20
20
-
Oneshot off time
Rt=15kΩ , Ct=2200pF
12
-
27
Vs maximum voltage
Vs(max)
0.7
■Recommended operation conditions
Parameter
Junction temperature
Logic supply
Symbol
Tj
Recommendation
-25～120
3.13～3.46
～27.5
Unit
℃
V
Vcc
Load supply
Vmm
fCHOP
V
Chopping frequency
～27
kHz
■Thermal resistance
Symbol
θja *
Rating
41
Unit
℃/W
* 50.8×50.8×1mm3 Glass Epoxy Board(FR4),250mm2 Cupper Pattern
Shindengen Electric Mfg.Co.Ltd
W1001
SHINDENGEN [ SHINDENGEN ELECTRIC MFG.CO.LTD ]
