English
Language : 

A3949_16 Datasheet, PDF (3/7 Pages) Allegro MicroSystems – DMOS Full-Bridge Motor Driver
◁
A3949
DMOS Full-Bridge Motor Driver
ELECTRICAL CHARACTERISTICS at TA = 25°C, VBB = 8 V to 36 V (unless otherwise noted)
Characteristics
Output-On Resistance
Body Diode Forward Voltage
Motor Supply Current
Logic Input Voltage
PHASE, ENABLE, MODE
Logic Input Voltage
SLEEP
Logic Input Current
PHASE, MODE pins
Logic Input Current
ENABLE pin
Logic Input Current
SLEEP pin
Propagation Delay Times
Crossover Delay
Protection Circuitry
UVLO Enable Threshold
UVLO Hysteresis
Thermal Shutdown Temp.
Thermal Shutdown Hysteresis
Symbol
RDSON
VF
IBB
VIN(1)
VIN(0)
VIN(1)
VIN(0)
IIN(1)
IIN(0)
IIN(1)
IIN(0)
IIN(1)
IIN(0)
tpd
tCOD
TJ
ΔTJ
Test Conditions
Source driver, IOUT = –2.8 A, TJ= 25°C
Source driver, IOUT = –2.8 A, TJ= 125°C
Sink driver, IOUT = 2.8 A, TJ= 25°C
Sink driver, IOUT = –2.8 A, TJ= 125°C
Source diode, IF = –2.8 A
Sink diode, IF = 2.8 A
fPWM < 50 kHz
Charge pump turned on; outputs disabled
Sleep mode
VIN = 2.0 V
VIN = 0.8 V
VIN = 2.0 V
VIN = 0.8 V
VIN = 2.7 V
VIN = 0.8 V
From PWM change to source or sink turn on
From PWM change to source or sink turn off
Min.
–
–
–
–
–
–
–
–
–
2.0
–
2.7
–
–
–
–
–
–
–
–
–
–
Typ. Max.
.4
.48
.68
–
.3
.43
.576 –
1.1 1.3
1
1.3
6
8.5
3
4.5
–
10
–
–
–
0.8
–
–
–
0.8
< 1.0 20
< –2.0 –20
40 100
16
40
27
50
< 1 10
600
–
100
–
500
–
VBB rising
–
6
–
–
250
–
–
170
–
–
15
–
Units
Ω
Ω
Ω
Ω
V
V
mA
mA
μA
V
V
V
V
μA
μA
μA
μA
μA
μA
ns
ns
ns
V
mV
°C
°C
Allegro MicroSystems, LLC
3
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
 ▷