A3957SLB Allegro, A3957SLB Datasheet - Page 4

• Manufacturer Part Number: A3957SLB
• Description: Full Bridge PWM Motor Driver 5V 24-Pin SOIC W
• Manufacturer: Allegro
• Type: Full Bridge PWM Motor Driverr

Specifications of A3957SLB

• Package: 24SOIC W
• Operating Supply Voltage: 5 V
• Maximum Operating Current: 4 mA
• Operating Temperature: -20 to 85 °C

ELECTRICAL CHARACTERISTICS at T
otherwise noted.)
Power Outputs
3957
FULL-BRIDGE PWM
MICROSTEPPING
MOTOR DRIVER
Characteristic
Load Supply Voltage Range
Output Leakage Current
Output Saturation Voltage
(Forward or Reverse Mode)
Sense Current Offset
Clamp Diode Forward Volt.
(Sink or Source)
Motor Supply Current
(No Load)
Control Circuitry
Logic Supply Voltage Range
Reference Voltage Range
UVLO Enable Threshold
UVLO Hysteresis
Logic Supply Current
Logic Input Voltage
Logic Input Current
Symbol
V
I
I
I
I
CC(OFF)
BB(OFF)
CC(ON)
CE(SAT)
BB(ON)
V
V
V
I
I
V
I
V
I
IN(1)
IN(0)
CEX
V
IN(1)
IN(0)
SO
REF
CC
BB
F
Test Conditions
Operating, I
V
V
V
I
I
I
D
Operating
Operating
V
D
V
V
S
F
F
OUT
OUT
S
CC
IN
IN
0
0
= 0.85 A
= 1.5 A
- I
Source Driver, I
Source Driver, I
Sink Driver, I
Sink Driver, I
V
= D
= D
A
= 1.0 V:
= 2.0 V
= 0.8 V
S
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
OUT
= 0
= 25˚C, V
= V
= 0 V
= 0 V, V
1
1
, I
= D
= D
BB
OUT
5 V
2
2
OUT
= D
= D
= 850 mA,
CC
= 1.5 A, L = 3 mH
OUT
OUT
BB
= 5 V
3
3
OUT
OUT
= 0.8 V
= 0.8 V
= 0.85 A
= 1.5 A
= 5 V to 50 V, V
= -0.85 A
= -1.5 A
CC
Min.
3.35
0.25
V
4.5
0.5
2.0
20
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
= 4.5 V to 5.5 V (unless
CC
<-1.0
<-2.0
Typ.
<1.0
3.70
0.40
<1.0
1.1
1.4
0.5
1.2
1.2
1.5
2.0
1.0
5.0
30
42
14
—
—
—
—
Limits
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Max.
4.05
0.55
-200
-50
1.2
1.5
0.7
1.5
1.4
1.7
4.0
5.5
2.5
0.8
50
50
40
50
50
17
20
—
Units
mA
mA
mA
mA
V
V
V
V
V
V
V
V
V
V
V
V
V
A
A
A
A
A