Stepper Motor Driver IC
MTD2033G
■Typical Application
Cp1
Cp2
Vcc
Vmm
Cvmm
Cvcc
S.M
OUT
2
CpA
CpB
CpC
Vmm
B
OUT
1
OUT
3
Vmm
A
OUT
4
Charge Pump
TSD
UVLO
Vcc
Standby
Standby
STB
PHA A
ENA A
PHA B
ENA B
Decay
Decay
Vcc
VrA
-
+
-
+
Current
Sensor
Current
Sensor
Q
R
S
Q
R
S
VrB
Mix Decay%
selection
OSC
2-bit digital
current selection
Decay
PG
RsA
RsB
DEC
LG
I1
I0
Tab
Rs
Rs
CPU
or
GATE ARRAY
●Recommended component values
●Constant chopping current level
Symbol
Cp1
Recommended value
Unit
μF
μF
μF
μF
Vref
Ichop ＝ꢀꢀꢀ
10Rs
0.47
0.022
47
Cp2
Cvmm *1
Cvcc
1
●Chopping frequency
fchop = fosc
*1： It recommend the electrolytic capacitor
for the noise absorption connect near IC to Load supply.
Shindengen Electric Mfg.Co.Ltd
W1002
SHINDENGEN [ SHINDENGEN ELECTRIC MFG.CO.LTD ]
