A3946 Datasheet, PDF (5/14 Pages) Allegro MicroSystems – Half-Bridge Power MOSFET Controller

A3946
Half-Bridge Power MOSFET Controller
ELECTRICAL CHARACTERISTICS at T_A = –40 to +135°C, V_BB = 7 to 60 V (unless otherwise noted)
Characteristics
Protection
VREG Undervoltage
BOOT Undervoltage
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Logic
Input Current
Logic Input Voltage
Logic Input Hysteresis
Fault Output
Symbol
Test Conditions
V_REGOFF
V_REGON
V_BSOFF
V_BSON
T_JTSD
T_J
V_REG decreasing
V_REG increasing
V_BOOT decreasing
V_BOOT increasing
Temperature increasing
Recovery = T_JTSD – T_J
I_IN(1)
I_IN(0)
V_IN(1)
V_IN(0)
–
V_ol
V_oh
IN1 V_IN / IN2 V_IN = 2.0 V
IN1 V_IN / IN2 V_IN = 0.8 V
RESET pin only
IN1 / IN2 logic high
RESET logic high
Logic low
All digital inputs
I = 1 mA, fault asserted
V=5V
Min.
Limits
Typ. Max. Units
7.8
8.3
8.8
V
8.6
9.1
9.6
V
7.25
7.8
8.3
V
8
8.75
9.5
V
–
170
–
°C
–
15
–
°C
–
40
100
μA
–
16
40
μA
–
–
1
μA
2.0
–
–
V
2.2
–
–
V
–
–
0.8
V
100
–
300
mV
–
–
400
mV
–
–
1
μA
Allegro MicroSystems, Inc.
5
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com