DRV8811 Datasheet, PDF (6/19 Pages) Texas Instruments – STEPPER MOTOR CONTROLLER IC

DRV8811
SLVS865D – SEPTEMBER 2008 – REVISED JULY 2009 ................................................................................................................................................. www.ti.com
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER
Power Supplies
I_VM
V_M operating supply current
I_VCC
V_CC operating supply current
I_VMQ
V_M sleep mode supply current
I_VCCQ V_CC sleep mode supply current
V_UVLO
V_M undervoltage lockout voltage
V_CC undervoltage lockout voltage
VREF Input/Current Control Accuracy
I_REF
VREF input current
ΔI_CHOP Chopping current accuracy
Logic-Level Inputs
V_IL
Input low voltage
V_IH
Input high voltage
I_IL
Input low current
I_IH
Input high current
HOMEn Output
V_OL
Output low voltage
V_OH
Output high voltage
Decay Input
TEST CONDITIONS
V_M = 35 V, f_PWM < 50 KHz
f_PWM < 50 KHz
V_M = 35 V
V_M rising
V_CC rising
VREF = 3.3 V
VREF = 2.0 V, 70% to 100% current
VREF = 2.0 V, 20% to 56% current
VIN = 0.3 × V_CC
VIN = 0.3 × V_CC
I_O = 200 µA
I_O = –200 µA
V_IL
Input low threshold voltage
For fast decay mode
V_IH
Input high threshold voltage
H-Bridge FETS
R_ds(on) HS FET on resistance
R_ds(on) LS FET on resistance
I_OFF
Motor Driver
t_OFF
Off time
t_BLANK
t_DT
Current sense blanking time
Dead time⁽¹⁾
Protection Circuits
I_OCP
Overcurrent protection trip level
t_TSD
Thermal shutdown temperature⁽¹⁾
For slow decay mode
V_M = 24 V, I_O = 2.5 A, T_J = 25°C
V_M = 24 V, I_O = 2.5 A, T_J = 85°C
V_M = 24 V, I_O = 2.5 A, T_J = 25°C
V_M = 24 V, I_O = 2.5 A, T_J = 85°C
Rx = 56 kΩ, Cx = 680 pF
Rx = 56 kΩ, Cx = 680 pF
SRn = 0
Die temperature
(1) Not tested in production - guaranteed by design.
MIN
TYP
MAX UNIT
4.5
8 mA
0.4
4 mA
12
20 µA
5
20 µA
6.7
8
V
2.71
2.95
–3
3 µA
–5
5%
–10
10 %
0.7 × V_CC
–20
–20
0.3 × V_CC V
V
20 µA
20 µA
0.7 × VCC
0.3 × VCC V
V
0.21 ×
VCC
V
0.6 × VCC
V
0.50
Ω
0.60
0.75
0.50
Ω
0.60
0.75
–20
20 µA
30
38
46 µs
700
950
1200 ns
100
475
800 ns
2.5
4.5
6.5 A
150
160
180 °C
6
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