A3941 Allegro MicroSystems, Inc., A3941 Datasheet - Page 5

• Manufacturer Part Number: A3941
• Description: Automotive Full Bridge MOSFET Driver
• Manufacturer: Allegro MicroSystems, Inc.

A3941
ELECTRICAL CHARACTERISTICS (continued) valid at T
Logic Inputs and Outputs
FF1 and FF2 Fault Output (Open Drain)
FF1 and FF2 Fault Output Leakage Current
RDEAD Current
Input Low Voltage
Input High Voltage
Input Hysteresis (Except RESET Pin)
Input Hysteresis (RESET Pin)
Input Current (Except RESET Pin)
Input Pulldown Resistor (RESET Pin)
RESET Pulse Time
Protection
VREG Undervoltage Lockout Threshold
Bootstrap Undervoltage Threshold
Bootstrap Undervoltage Hysteresis
V5 Undervoltage Turn-Off Threshold
V5 Undervoltage Hysteresis
VDSTH Input Range
VDSTH Input Current
VDSTH Disable Voltage
VDRAIN Input Voltage
VDRAIN Input Current
Short-to-Ground Threshold Offset
Short-to-Battery Threshold Offset
Overtemperature Fault Flag Threshold
Overtemperature Fault Hysteresis
1
2
3
4
5
Functions correctly, but parameters are not guaranteed, below the general limits (7 V).
See Gate Drive Timing diagrams.
For input and output current specifications, negative current is defined as coming out of (sourcing) the specified device pin.
As V
As V
Sx
Sx
decreases, fault occurs if V
increases, fault occurs if V
Characteristics
3
5
4
3
Sx
BAT
– V
–V
LSS
Sx
3
> V
> V
STB
STG
. STB threshold, V
. STG threshold, V
V
V
Symbol
V
V
V
BOOTUVhys
V
V
V
REGUVon
REGUVoff
V
V
INRSThys
V
I
V
T
V
V
V
BOOTUV
I
V
I
I
DRAIN
5UVhys
DEAD
R
t
DSTH
FF(H)
5UVoff
DSDIS
DRAIN
STGO
T
INhys
RES
DSTH
STBO
JFhys
FF(L)
IN(H)
IN(L)
I
Automotive Full Bridge MOSFET Driver
IN
PD
JF
J
I
V
RDEAD = GND
0 V < V
V
V
Cx with respect to Sx
V
0 V < V
When not connected directly to V5
V
V
0 V < V
High-side on, V
High-side on, V
Low-side on, V
Low-side on, V
Temperature increasing
Recovery = T
FF
= –40°C to 150°C, V
FF
REG
REG
5
DSTH
DSTH
STB
falling
= 1 mA, fault not present
STG
= 5 V, fault present
rising
falling
= 2 V, V
= 2 V, V
= V
= V
IN
DSTH
DRAIN
< V
DSTH
DSTH
Test Conditions
< 2 V
5
< V
JF
BB
BB
+V
DSTH
DSTH
DSTH
DSTH
– T
+ V
BB
= 12 V,
= 12 V,
STBO
JFhys
STGO
≥ 1 V
< 1 V
≥ 1 V
< 1 V
.
BB
.
= 7 to 50 V, unless noted otherwise
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
Min.
–200
–150
–150
6.75
4.95
300
200
300
150
3.5
0.1
7.5
3.4
0.1
–1
–1
59
–
–
–
–
–
7
–
–
–
–
Typ.
±100
±100
7.25
500
400
V
±50
±50
170
3.6
50
13
10
15
–
–
–
–
–
–
–
–
8
–
–
–
–
BB
Max.
7.75
–70
500
250
150
150
0.4
3.5
8.5
3.8
69
30
50
–
–
1
1
–
–
–
1
–
–
2
–
–
–
%V
%V
Units
mV
mV
mV
mV
mV
mV
mV
kΩ
μA
μA
μA
μA
μA
ºC
ºC
μs
V
V
V
V
V
V
V
V
V
REG
REG
5