2-Phase Stepper Motor Bipolar Driver ICs (2-Phase/1-2 Phase Excitation)
A3953SB/SLB
sElectrical
Characteristics
Parameter
Power outputs (OUT
A
or OUT
B
)
Load supply voltage range
Output leakage current
Sense current offset
Output saturation voltage
(Forward/reverse mode)
Output saturation voltage
(Brake mode)
Clamp diode forward voltage
Symbol
(Unless specified otherwise, T
a
=25°C, V
BB
=5V to 50V, V
CC
=3.0V to 5.5V)
Conditions
Limits
min
V
CC
<1.0
18
<−1.0
33
1.0
1.7
0.4
1.1
1.2
1.4
1.2
1.4
2.5
1.0
1.0
1.0
165
8
2.75
0.17
42
12
42
500
3.3
5.0
2.0
V
IN
=2.0V
V
IN
=0.8V
V
CC
=3.0V to 3.6V
V
CC
=4.5V to 5.5V
V
REF
=0V to 1V
V
REF
=0V
C
T
=680pF, R
T
=30kΩ, V
CC
=3.3V
Comparator Trip to Source OFF, Io=25mA
Comparator Trip to Source OFF, Io=1.3A
I
RC
Charge ON to Source ON, Io=25mA
I
RC
Charge ON to Source ON, Io=1.3A
V
CC
=3.3V, R
T
≥12kΩ,
C
T
=680pF
V
CC
=5.0V, R
T
≥12kΩ,
C
T
=470pF
I
O
=±1.3A, 50% to 90% ENABLE ON to Source ON
I
O
=±1.3A, 50% to 90% ENABLE OFF to Source OFF
I
O
=±1.3A, 50% to 90% ENABLE ON to Sink ON
I
O
=±1.3A, 50% to 90% ENABLE OFF to Sink OFF (MODE=L)
I
O
=±1.3A, 50% to 90% PHASE Change to Sink ON
I
O
=±1.3A, 50% to 90% PHASE Change to Sink OFF
I
O
=±1.3A, 50% to 90% PHASE Change to Source ON
I
O
=±1.3A, 50% to 90% PHASE Change to Source OFF
1kΩ Load to 25V, V
BB
=50V
<1.0
<−2.0
0
0
±2.0
18.3
20.4
1.0
1.8
0.4
0.55
1.4
1.6
1.0
1.0
1.0
0.8
2.4
0.8
2.0
1.7
1.5
0.8
20
−200
0.4
1.0
±5.0
±5.0
22.5
1.5
2.6
0.7
0.85
1.9
2.0
typ
max
50
50
−50
50
1.1
1.9
0.9
1.3
1.4
1.8
1.4
1.8
4.0
50
50
50
Units
V
BB
I
CEX
I
SO
Operating, I
O
=±1.3A, L=3mH
V
O
=V
BB
V
O
=0V
I
SENSE
−I
O
, I
O
=850mA, V
SENSE
=0V, V
CC
=5V
V
SENSE
=0.4V, V
CC
=3.0V, BRAKE=H:Source driver, I
O
=−0.85A
V
SENSE
=0.4V, V
CC
=3.0V, BRAKE=H:Source driver, I
O
=−1.3A
V
SENSE
=0.4V, V
CC
=3.0V, BRAKE=H:Sink driver, I
O
=0.85A
V
SENSE
=0.4V, V
CC
=3.0V, BRAKE=H:Sink driver, I
O
=1.3A
V
SENSE
=0.4V, V
CC
=3.0V, BRAKE=L:Sink driver, I
O
=0.85A
V
SENSE
=0.4V, V
CC
=3.0V, BRAKE=L:Sink driver, I
O
=1.3A
I
F
=0.85A
I
F
=1.3A
V
ENABLE
=0.8V, V
BRAKE
=2.0V
V
ENABLE
=V
BRAKE
=2.0V, V
MODE
=0.8V
V
BRAKE
=0.8V
V
ENABLE
=V
BRAKE
=V
MODE
=2.0V
V
V
CE (SAT)
V
CE (SAT)
V
F
I
BB (ON)
Motor supply current
(No load)
Control logic
Thermal shutdown temperature
Thermal shutdown hysteresis
UVLO enable threshold
UVLO hysteresis
I
BB (OFF)
I
BB (BRAKE)
I
BB (SLEEP)
T
j
∆T
j
V
UVLO
∆V
UVLO
I
CC (ON)
I
CC (OFF)
I
CC (BRAKE)
I
CC (SLEEP)
V
CC
V
IH
V
IL
I
IH
I
IL
V
SENSE (3.3)
V
SENSE (5.0)
I
REF
V
IO
t
OFF RC
t
PWM (OFF)
t
PWM (ON)
t
PWM (ON)
µ
A
µ
A
mA
V
V
V
V
V
V
V
V
mA
µ
A
µ
A
µ
A
°C
°C
V
V
mA
mA
mA
µ
A
V
V
V
µ
A
µ
A
V
V
µ
A
mV
2.5
0.12
V
ENABLE
=0.8V, V
BRAKE
=2.0V
V
ENABLE
=V
BRAKE
=2.0V, V
MODE
=0.8V
V
BRAKE
=0.8V
V
ENABLE
=V
BRAKE
=V
MODE
=2.0V
Operating
3.0
3.0
0.25
50
15
50
800
5.5
Logic supply current
Logic supply voltage range
Logic input voltage
Logic input current
Sense voltage range
Reference input current
Comparator input offset voltage
AC timing
PWM RC fixed off-time
PWM turn-off time
PWM turn-on time
PWM minimum on-time
0.8
0.8
Propagation delay time
t
pd
Crossover dead time
q“typ”
values are for reference.
t
CODT
0.3
3.0
µ
s
µ
s
µ
s
µ
s
µ
s
µ
s
µ
s
µ
s
µ
s
µ
s
µ
s
µ
s
µ
s
µ
s
µ
s
µ
s
A3953SB/SLB
61
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