Datasheet

DRV8818
www.ti.com SLVSAX9C –SEPTEMBER 2011–REVISED NOVEMBER 2013
RECOMMENDED OPERATING CONDITIONS
T
A
= 25°C (unless otherwise noted)
MIN NOM MAX UNIT
V
M
Motor power supply voltage range
(1)
8 35 V
V
CC
Logic power supply voltage range 3 5.5 V
V
REF
VREF input voltage 0 V
CC
V
R
X
R
X
resistance value 12 56 100 kΩ
C
X
C
X
capacitance value 470 680 1500 pF
(1) All V
M
pins must be connected to the same supply voltage.
ELECTRICAL CHARACTERISTICS
T
A
= 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Power Supplies
I
VM
V
M
operating supply current V
M
= 35 V, f
PWM
< 50 KHz 7 10 mA
I
VCC
V
CC
operating supply current f
PWM
< 50 KHz 0.4 4 mA
I
VMQ
V
M
sleep mode supply current V
M
= 35 V 3 20 μA
I
VCCQ
V
CC
sleep mode supply current 0.5 20 μA
V
M
undervoltage lockout voltage V
M
rising 6.7 7.5
V
UVLO
V
V
CC
undervoltage lockout voltage V
CC
rising 2.75 2.95
VREF Input/Current Control Accuracy
I
REF
VREF input current VREF = 3.3 V –3 3 μA
VREF = 2.0 V, 70% to 100% current –5 5 %
ΔI
CHOP
Chopping current accuracy
VREF = 2.0 V, 20% to 56% current –10 10 %
Logic-Level Inputs
V
IL
Input low voltage 0.3 × V
CC
V
V
IH
Input high voltage 0.7 × V
CC
V
V
HYS
Input hysteresis 300 mV
I
IL
Input low current VIN = 0.3 × V
CC
–20 20 μA
I
IH
Input high current VIN = 0.3 × V
CC
–20 20 μA
R
PU
Pullup resistance ENABLEn, RESETn 1 MΩ
R
PD
Pulldown resistance DIR, STEP, SLEEPn, USM1, USM0, SRn 1 MΩ
HOMEn Output
V
OL
Output low voltage I
O
= 200 μA 0.3 × VCC V
V
OH
Output high voltage I
O
= –200 μA 0.7 × VCC V
Decay Input
V
IL
Input low threshold voltage For fast decay mode 0.21 × VCC V
V
IH
Input high threshold voltage For slow decay mode 0.6 × VCC V
H-Bridge FETS
R
ds(on)
HS FET on resistance V
M
= 24 V, I
O
= 2.5 A, T
J
= 25°C 0.22 0.30 Ω
R
ds(on)
LS FET on resistance V
M
= 24 V, I
O
= 2.5 A, T
J
= 25°C 0.15 0.24 Ω
I
OFF
–20 20 μA
Motor Driver
t
OFF
Off time Rx = 56 kΩ, Cx = 680 pF 35 44 53 μs
t
BLANK
Current sense blanking time Rx = 56 kΩ, Cx = 680 pF 900 1250 1500 ns
t
DT
Dead time SRn = 0 100 475 800 ns
t
R
Rise time 10 80 ns
t
F
Fall time 10 80 ns
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