A3909
Dual Full Bridge Motor Driver
ELECTRICAL CHARACTERISTICS* Valid at TA = 25°C; unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
VBB Voltage Range
VBB Supply Current
VBB
IBB
Standby Mode
4
–
18
–
4
8
–
<1
10
Total Driver On-Resistance (Sink +
Source)
RDS(on)tot
I = 1 A, TJ = 25°C, VBB = 12 V
I = 1 A, TJ = 25°C, VBB = 4 V
–
1.6
2
–
2.7
3.5
Source Driver On-Resistance
RDS(on)src I = 1 A, TJ = 25°C, VBB = 12 V
–
1.12
–
Sink Driver On-Resistance
RDS(on)snk I = 1 A, TJ = 25°C, VBB = 12 V
–
0.48
–
Input Logic Low Level
VIL(Standby) All inputs low
–
–
0.4
Input Logic Low Level
VIL
–
–
0.8
Input Logic High Level
VIH
2
–
–
Input Hysteresis
VHYS
100
300
500
Logic Input Current
IIN
VIN = 5 V (Pull down = 50 kΩ)
–
100
150
VBB UVLO
VBBUVLO VBB rising
–
3.6
3.95
VBB UVLO Hysteresis
VBBHYS
100
300
500
Standby Timer
tSTB
IN1 = IN2 = IN3 = IN4 < VIL(Standby)
–
1
1.5
Thermal Shutdown Temperature
TJTSD Temperature increasing
150
165
180
Thermal Shutdown Hysteresis
ΔTJ
Recovery = TJTSD – ΔTJ
–
20
–
*Specified limits are tested at a single temperature and assured through operating temperature range by design and characterization.
Unit
V
mA
μA
Ω
Ω
Ω
Ω
V
V
V
mV
μA
V
mV
ms
°C
°C
Allegro MicroSystems, LLC
3
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com