3958 Datasheet, PDF (4/12 Pages) Allegro MicroSystems – DMOS FULL-BRIDGE PWM MOTOR DRIVER

3958
DMOS FULL-BRIDGE
PWM MOTOR DRIVER
ELECTRICAL CHARACTERISTICS at T_A = +25°C, V_BB = 50 V, V_DD = 5.0 V, V_SENSE = 0.5 V,
f_PWM < 50 kHz (unless noted otherwise), continued.
Limits
Characteristics
Symbol Test Conditions
Min. Typ. Max.
Control Logic
Buffer Input Offset Volt.
Reference Divider Ratio
V_IO
– D14 = High
– 0 ±15
9.9 10 10.2
D14 = Low
4.95 5.0 5.05
Propagation Delay Times
t_pd
PWM change to source ON
PWM change to source OFF
– 600 –
– 100 –
PWM change to sink ON
– 600 –
PWM change to sink OFF
– 100 –
Phase change to sink ON
– 600 –
Phase change to sink OFF
– 100 –
Phase change to source ON
– 600 –
Phase change to source OFF
– 100 –
Thermal Shutdown Temp.
Thermal Shutdown Hysteresis
UVLO Enable Threshold
T_J
∆T_J
UVLO
UVLO Hysteresis
∆UVLO
Increasing V_DD
– 165 –
– 15 –
3.90 4.2 4.45
0.05 0.10 –
Logic Supply Current
I_DD f_PWM < 50 kHz
Sleep Mode, Inputs < 0.5 V
– 6.0 10
– – 2.0
NOTES: 1. Typical Data is for design information only.
2. Negative current is defined as coming out of (sourcing) the specified device terminal.
Units
mV
–
–
ns
ns
ns
ns
ns
ns
ns
ns
°C
°C
V
V
mA
mA
115 Northeast Cutoff, Box 15036
4
Worcester, Massachusetts 01615-0036 [phone]