A3972SB Allegro Microsystems Inc, A3972SB Datasheet - Page 5

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A3972SB

Manufacturer Part Number
A3972SB
Description
IC MOTOR DRIVER PWM DUAL 24-DIP
Manufacturer
Allegro Microsystems Inc
Datasheet

Specifications of A3972SB

Applications
Stepper Motor Driver
Number Of Outputs
1
Current - Output
±1.5A
Voltage - Load
15 V ~ 50 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

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
A3972SB
Manufacturer:
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Quantity:
20 000
Part Number:
A3972SB-T
Manufacturer:
MAXIM
Quantity:
6 221
Part Number:
A3972SBT
Manufacturer:
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ELECTRICAL CHARACTERISTICS at T
f
PWM
A3972
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 defi ned as coming out of (sourcing) the specifi ed device terminal.
3. E
) Error (note 3)
G
= [(V
REF
/Range) – V
S
]/(V
V
Symbol
V
V
ΔV
REF(EXT)
V
REF(INT)
REF
REF
f
V
I
ΔT
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
Microstepping PWM Motor Driver
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
DD
BB
= 50 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

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