A3973SB Allegro Microsystems Inc, A3973SB Datasheet - Page 6

• Manufacturer Part Number: A3973SB
• Description: IC MOTOR DRIVER PWM DUAL 24-DIP
• Manufacturer: Allegro Microsystems Inc

Specifications of A3973SB

• Applications: Stepper Motor Driver
• Number Of Outputs: 1
• Current - Output: ± 1A
• Voltage - Load: 15 V ~ 35 V
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 24-DIP (0.300", 7.62mm)
• Operating Current: 12mA
• Operating Temperature Classification: Commercial
• Package Type: PDIP
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ELECTRICAL CHARACTERISTICS at T
f
PWM
A3973
Characteristics
Control Logic (continued)
Internal Oscillator
DAC Accuracy (total error)
Reference Input Voltage Range
Reference Buffer Offset
Reference Divider Ratio
Reference Input Current
Internal Reference Voltage
Gain (G
Comparator Input Offset Voltage
Propagation Delay Times
Crossover Dead Time
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
UVLO Enable Threshold
UVLO Hysteresis
NOTES: 1. Typical Data is for design information only.
< 50 kHz (unless otherwise noted).
m
2. Negative current is defined as coming out of (sourcing) the specified device terminal.
3. E
) Error (note 3)
G
= [(V
REF
/Range) – V
S
]/(V
V
Symbol
V
V
∆V
REF(EXT)
V
REF(INT)
REF
REF
f
V
I
∆T
V
OSC
E
UVLO
E
REF
t
T
t
UVLO
pd
OS
dt
IO
G
T
J
/Range).
/V
J
S
A
= +25°C, V
Test Conditions
OSC shorted to ground
R
Relative to DAC reference buffer
output, D0 = 0, D17 = 0
D0 = 0, D18 = 0
D0 = 0, D18 = 1
V
D0 = 0, D17 = 0,
V
50% to 90%:
Increasing V
OSC
REF
REF
D18 = 0, DAC = 63
D18 = 0, DAC = 31
D18 = 1, DAC = 63
D18 = 1, DAC = 15
PWM change to source on
PWM change to source off
PWM change to sink on
PWM change to sink off
= 2.0 V
= 0 V
= 51 kΩ
Microstepping PWM Motor Driver
DD
BB
= 35 V, V
Dual DMOS Full-Bridge
DD
= 5.0 V, V
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Min.
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
1.94
0.05
500
500
300
3.0
3.4
0.5
3.9
50
50
—
—
—
—
—
—
—
—
—
—
—
—
S
= 0.5 V,
Typ.
±1/2
±5.0
0.10
±10
800
150
800
150
700
165
4.0
4.0
8.0
4.0
2.0
4.2
15
—
—
0
0
0
0
Limits
Max.
1200
1200
±0.5
2.06
4.45
±10
350
350
900
5.0
4.6
2.6
±6
±9
±6
—
—
—
—
—
—
—
—
Units
MHz
MHz
LSB
mV
mV
µA
ns
ns
ns
ns
ns
°C
°C
—
—
%
%
%
%
V
V
V
V
5