A4973SB-T Просмотр технического описания (PDF) - Allegro MicroSystems
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A4973SB-T Datasheet PDF : 11 Pages
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A4973
Full-Bridge PWM Motor Driver
ELECTRICAL CHARACTERISTICS at TJ = 25°C, VCC = 3.0 V to 5.5 V (unless otherwise noted.)
Characteristic
Symbol
Test Conditions
Power Outputs
Load Supply Voltage Range
Output Leakage Current
Output On Resistance
AC Timing
PWM RC Fixed Off-time
PWM Minimum On Time
Crossover Dead Time
Maximum PWM Frequency
Control Circuitry
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
UVLO Enable Threshold
UVLO Hysteresis
Logic Supply Current
Motor Supply Current (No Load)
Logic Supply Voltage Range
VBB
ICEX
RDS(on)
tOFF RC
tON(min)
tCODT
fPWM(max)
TJ
∆TJ
ICC(ON)
ICC(Sleep)
IBB(ON)
IBB(Sleep)
VCC
Operating
VOUT = VBB
VOUT = 0 V
Total sink and source, IOUT = 1.5 A, VBB > 8 V, TJ = 25°C
CT = 680 pF, RT= 30 kΩ, VCC = 3.3 V
VCC = 3.3 V, RT ≥ 12 kΩ, CT = 680 pF
VCC = 5.0 V, RT ≥ 12 kΩ, CT = 470 pF
IOUT = 1.5 A
VENABLE = VIN(0) , VBRAKE = VIN(1)
VENABLE = VMODE = VBRAKE = VIN(1)
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VENABLE = VIN(0)
VENABLE = VMODE = VBRAKE = VIN(1)
Operating
Logic Input Voltage
VIN(1)
VIN(0)
Logic Input Current
Reference Input Current
Comparator Input Offset Volt.
Reference Input Voltage Range
Gain
IIN(1)
IIN(0)
IREF
VIO
VREF
VIN = VCC = 5 V
VIN = 0 V, VCC = 5 V
VREF = 0 V to 1 V
VREF = 0 V
REF Pin
VREF = 1 V
Min. Typ. Max.
5
–
50
– <1.0 50
– <–1.0 –50
–
1 1.4
18.3 20.4 22.5
0.8 1.4 1.9
0.8 1.6 2.0
– 500 –
70 –
–
– 165 –
–
15
–
2.5 2.75 3.0
0.12 0.17 0.25
– 2.7 3.5
– 250 450
– 500 700
– <1.0 3
3.0 5.0 5.5
VCC ×
0.55
–
–
–
–
VCC ×
0.27
—
0 –10
— –106 –200
–
– ±5.0
– ±2.0 ±5.0
0
–
1
1.9 2 2.1
Unit
V
μA
μA
Ω
μs
μs
μs
ns
kHz
°C
°C
V
V
mA
μA
μA
μA
V
V
V
μA
μA
μA
mV
V
–
Allegro MicroSystems, Inc.
3
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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