A4986_12 Datasheet, PDF (4/17 Pages) Allegro MicroSystems – DMOS Dual Full-Bridge PWM Motor Driver With Overcurrent Protection

A4986
DMOS Dual Full-Bridge PWM Motor Driver
With Overcurrent Protection
ELECTRICAL CHARACTERISTICS¹ at T_A = 25°C, V_BB = 35 V (unless otherwise noted)
Characteristics
Symbol
Test Conditions
Min.
Typ.²
Max.
Units
Output Drivers
Load Supply Voltage Range
Logic Supply Voltage Range
Output On Resistance
Body Diode Forward Voltage
Motor Supply Current
Logic Supply Current
V_BB
V_DD
R_DSON
V_F
I_BB
I_DD
Operating
During Sleep Mode
Operating
Source Driver, I_OUT = –1.5 A
Sink Driver, I_OUT = 1.5 A
Source Diode, I_F = –1.5 A
Sink Diode, I_F = 1.5 A
f_PWM < 50 kHz
Operating, outputs disabled
Sleep Mode
f_PWM < 50 kHz
Outputs off
Sleep Mode
8
–
35
V
0
–
35
V
3.0
–
5.5
V
–
320
430
mΩ
–
320
430
mΩ
–
–
1.3
V
–
–
1.3
V
–
–
4
mA
–
–
2
mA
–
–
10
μA
–
–
8
mA
–
–
5
mA
–
–
10
μA
Control Logic
Logic Input Voltage
Logic Input Current
Logic Input Pull-down
Logic Input Hysteresis
Blank Time
Fixed Off-Time
Reference Input Voltage Range
Reference Input Current
Current Trip-Level Error³
Crossover Dead Time
Protection
Overcurrent Protection Threshold⁴
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
VDD Undervoltage Lockout
VDD Undervoltage Hysteresis
V_IN(1)
V_IN(0)
I_IN(1)
I_IN(0)
R_IN02
R_IN12
V_HYS(IN)
t_BLANK
t_OFF
V_REF
I_REF
err_I
t_DT
I_OCPST
T_TSD
T_TSDHYS
V_DDUVLO
V_DDUVLOHYS
 V_IN = V_DD 0.7
 V_IN = V_DD 0.3
As a % of V_DD
OSC = VDD or GND
R_OSC = 25 kΩ
V_REF = 2 V, %I_TripMAX = 33.3%
V_REF = 2 V, %I_TripMAX = 66.7%
V_REF = 2 V, %I_TripMAX = 100.00%
V_DD rising
 V_DD 0.7
–
–
V
–
–
 V_DD 0.3
V
–20
<1.0
20
μA
–20
<1.0
20
μA
–
100
–
kΩ
–
50
–
kΩ
5
11
19
%
0.7
1
1.3
μs
20
30
40
μs
23
30
37
μs
0
–
4
V
–3
0
3
μA
–
–
±15
%
–
–
±5
%
–
–
±5
%
100
475
800
ns
2.1
–
–
A
–
165
–
°C
–
15
–
°C
2.7
2.8
2.9
V
–
90
–
mV
1_{For input and output current specifications, negative current is defined as coming out of (sourcing) the specified device pin.}
2_{Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions. Performance may vary for individual}
units, within the specified maximum and minimum limits.
3_{VERR = [(VREF/8) – VSENSE] / (VREF/8).}
4_{Overcurrent protection (OCP) is tested at TA = 25°C in a restricted range and guaranteed by characterization.}
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com