DRV8846_15 Datasheet, PDF (6/35 Pages) Texas Instruments – DRV8846 Dual H-Bridge Stepper Motor Driver

DRV8846
SLLSEK2 – JUNE 2014
7.5 Electrical Characteristics
T_A = 25°C, over recommended operating conditions unless otherwise noted
PARAMETER
TEST CONDITIONS
POWER SUPPLIES (VM, VINT)
VM
VM operating voltage
I_VM
VM operating supply current
VM = 12 V, excluding winding current,
nSLEEP = 1, nENBL = 0 or 1
I_VMQ
VM sleep mode supply current
VM = 12 V, nSLEEP = 0, nENBL = 0 or 1
t_SLEEP
Sleep time
nSLEEP = 0 to sleep mode
t_WAKE
Wake time
nSLEEP = 1 to output transition
t_ON
Power-on time
VM > V_UVLO rising to output transition
VINT
VINT voltage
VM > 4 V, I_OUT = 0 A to 1 mA
LOGIC-LEVEL INPUTS (STEP, DIR, nENBL, nSLEEP, ADEC)
V_IL
V_IH
V_HYS
I_IL
I_IH
R_PD
Input logic low voltage
Input logic high voltage
Input logic hysteresis
Input logic low current
Input logic high current
Pulldown resistance
VIN = 0 V
VIN = 5 V
nENBL, STEP, DIR, ADEC
nSLEEP
t_DEG
Input deglitch time
t_PROP
Propagation delay
STEP edge to current change
TRI-LEVEL INPUTS (I0, I1, M0, M1, DEC0, DEC1, TOFF_SEL)
V_IL
Tri-level input logic low voltage
V_IZ
Tri-level input Hi-Z voltage
V_IH
Tri-level input logic high voltage
V_HYS
Tri-level input hysteresis
I_IL
Tri-level input logic low current
I_IH
Tri-level input logic high current
R_PD
Tri-level pulldown resistance
R_PU
Tri-level pullup resistance
CONTROL OUTPUTS (nFAULT)
V_IN = 0 V
V_IN = 5 V
To GND
To VINT
V_OL
Output logic low voltage
I_O = 5 mA
I_OH
Output logic high leakage
V_O = 3.3 V
MOTOR DRIVER OUTPUTS (AOUT1, AOUT2, BOUT1, BOUT2)
R_DS(ON) High-side FET on resistance
VM = 12 V, I = 0.5 A, T_J = 25°C
VM = 12 V, I = 0.5 A, T_J = 85°C⁽¹⁾
R_DS(ON) Low-side FET on resistance
VM = 12 V, I = 0.5 A, T_J = 25°C
VM = 12 V, I = 0.5 A, T_J = 85°C⁽¹⁾
I_OFF
Off-state leakage current
VM = 5 V, T_J = 25°C
t_RISE
Output rise time
t_FALL
Output fall time
t_DEAD
Output dead time
Internal dead time
PWM CURRENT CONTROL (VREF, AISEN, BISEN)
I_REF
V_TRIP
A_ISENSE
Externally applied VREF input current
xISEN trip voltage
Current sense amplifer gain
VREF = 1 to 3.3 V
For 100% current step with VREF = 3.3 V
Reference only
www.ti.com
MIN TYP MAX UNIT
4
18 V
3.5
4.5
5.5 mA
0.5
1.2
3 μA
1 ms
1 ms
1 ms
3.13
3.3 3.47 V
0
1.6
100
–1
1
200
500
200
600
0.7 V
5.5 V
mV
1 μA
30 μA
kΩ
ns
ns
0
1.1
1.6
100
–30
1
170
340
0.7 V
V
5.5 V
mV
–1 μA
30 μA
kΩ
kΩ
0.5 V
–1
1 μA
550
660
350
420
–1
60
60
200
Ω
Ω
1 μA
ns
ns
ns
1 μA
500
mV
6.6
V/V
(1) Not tested in production; limits are based on characterization data
6
Submit Documentation Feedback
Product Folder Links: DRV8846
Copyright © 2014, Texas Instruments Incorporated