A3967
Microstepping Driver with Translator
ELECTRICAL CHARACTERISTICS (continued) at TA = +25°C, VBB = 30 V, VCC = 3.0 V to 5.5V (unless
otherwise noted)
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max. Units
Control Logic (cont’d)
Mixed Decay Trip Point
Ref. Input Voltage Range
PFDH
PFDL
VREF
Operating
–
0.6VCC
–
V
–
0.21VCC
–
V
1.0
–
VCC
V
Reference Input Impedance
Gain (Gm) Error
(note 3)
Thermal Shutdown Temp.
Thermal Shutdown Hysteresis
UVLO Enable Threshold
UVLO Hysteresis
Logic Supply Current
ZREF
120
EG
VREF = 2 V, Phase Current = 38.37% †
–
VREF = 2 V, Phase Current = 70.71% †
–
VREF = 2 V, Phase Current = 100.00% †
–
TJ
–
∆TJ
–
VUVLO Increasing VCC
2.45
∆VUVLO
0.05
ICC
Outputs enabled
–
Outputs off
–
160
–
–
–
165
15
2.7
0.10
50
–
200
kΩ
±10
%
±5.0
%
±5.0
%
–
°C
–
°C
2.95
V
–
V
65
mA
9.0
mA
Sleep mode
–
–
20
μA
* Operation at a step frequency greater than the specified minimum value is possible but not warranteed.
† 8 microstep/step operation.
NOTES: 1. Typical Data is for design information only.
2. Negative current is defined as coming out of (sourcing) the specified device terminal.
3. EG = ([VREF/8] – VSENSE)/(VREF/8)
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com