A3906
Low Voltage Stepper and Single/Dual DC Motor Driver
ELECTRICAL CHARACTERISTICS1,2 valid at TA = 25°C and VBB = 2.5 to 9 V, unless otherwise noted
Characteristics
Symbol
Test Conditions
Min. Typ. Max.
Operating Voltage Range
VBB Supply Current
Output Resistance
Clamp Diode Voltage
Output Leakage Current
Control Logic
VBB
IBB
RDS(on)
Vf
IDSS
2.5
IOUT = 0 mA, PWM = 50 kHz, Duty Cycle = 50%
–
IOUT = 0 mA, outputs disabled, VBB = 9.6 V
–
Sleep mode, VIN < 0.4 V
–
Source driver, IOUT = 400 mA , VBB = 3 V, TJ = 25°C
–
Source driver, IOUT = 400 mA , VBB = 3 V, TJ = 85°C
–
Sink driver, IOUT = 400 mA, VBB = 3 V, TJ= 25°C
–
Sink driver, IOUT = 400 mA, VBB = 3 V, TJ= 85°C
–
I = 400 mA
–
Outputs, VOUT = 9 V
–20
–
5
3
150
0.52
0.710
0.52
0.710
–
–
9
–
–
500
0.68
–
0.68
–
1
20
Logic Input Voltage
Logic Input Current
Input Hysteresis
¯S¯¯L¯¯E¯¯E¯¯P¯ Input
Fault Output
Fault Output Leakage Current
Fault Output Timer
Blank Time
Fixed Off-Time
Propagation Delay Time
Protection Circuitry
VIN(1)
VIN(0)
IIN(1)
IIN(0)
VINhys
VSLEEP(0)
VSLEEP(1)
VFLx
IFLx
tFLx
tBLANK
tOFF
tpd(on)
tpd(off)
VIN = 5.5 V
VIN = 0.8 V
Flag asserted, IFLx = 1 mA
VFLx = 5 V
Reset of PWM latch
Input high to source on, input low to source off
Input low to sink off, input high to sink on
2.0
–
5.5
–
–
0.8
–
<100 500
– <–100 –500
–
150
–
–
–
0.4
2
–
–
–
–
200
–
–
1
–
300
–
2.1
3
3.9
–
30
–
100 235 350
50
100 200
Crossover Delay
tCOD
200
VBB Undervoltage Lockout Threshold
VBBUVLO VBB rising
2.2
VBB Undervoltage Lockout Hysteresis
VBBUVHYS
200
Thermal Shutdown Temperature
TJTSD
–
Thermal Shutdown Hysteresis
TJTSDHYS
–
1For input and output current specifications, negative current is defined as coming out of (sourcing) the specified device pin.
2Specifications over the operating temperature range are assured by design and characterization.
425
2.31
300
165
15
650
2.45
400
–
–
Units
V
mA
mA
nA
Ω
Ω
Ω
Ω
V
μA
V
V
nA
nA
mV
V
V
mV
μA
μs
μs
μs
ns
ns
ns
V
mV
°C
°C
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com