Datasheet
DRV8823
www.ti.com
SLVS913D –JANUARY 2009–REVISED JANUARY 2010
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
V
M
Motor power supply voltage range 8 32 V
I
MOT
Continuous motor drive output current
(1)
1 1.5 A
V
REF
VREF input voltage 1 4 V
(1) Power dissipation and thermal limits must be observed.
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
POWER SUPPLIES
I
VM
V
M
operating supply current V
M
= 24 V, no loads 5 8 mA
V
UVLO
V
M
undervoltage lockout voltage V
M
rising 6.5 8 V
V
CP
Charge pump voltage Relative to V
M
12 V
V
V3P3
V
V3P3
output voltage 3.20 3.30 3.40 V
LOGIC-LEVEL INPUTS (INTERNAL PULLDOWNS)
V
IL
Input low voltage 0.7 V
V
IH
Input high voltage 2 V
V
HYS
Input hysteresis 0.3 0.45 0.6 V
Input current
I
IN
VIN = 3.3 V 100 mA
(internal pulldown current)
OVERTEMPERATURE PROTECTION
T
TSD
Thermal shutdown temperature Die temperature 150 °C
MOTOR DRIVERS
V
M
= 24 V, I
O
= 0.8 A, T
J
= 25°C 0.25
Motor #1 FET on resistance
R
ds(on)
Ω
(each individual FET)
V
M
= 24 V, I
O
= 0.8 A, T
J
= 85°C 0.31 0.37
V
M
= 24 V, I
O
= 0.8 A, T
J
= 25°C 0.30
Motor #2 FET on resistance
R
ds(on)
Ω
(each individual FET)
V
M
= 24 V, I
O
= 0.8 A, T
J
= 85°C 0.38 0.45
I
OFF
Off-state leakage current ±12 mA
f
PWM
Motor PWM frequency
(1)
45 50 55 kHz
t
BLANK
ITRIP blanking time
(2)
3.75 ms
t
F
Output fall time 50 300 ns
t
R
Output rise time 50 300 ns
I
OCP
Overcurrent protect level 1.5 3 4.5 A
t
OCP
Overcurrent protect trip time 2.5 ms
t
MD
Mixed decay percentage Measured from beginning of PWM cycle 75 %
CURRENT CONTROL
I
REF
xVREF input current xVREF = 3.3 V –3 3 mA
xVREF = 2.5 V, derived from V3P3; 71% -
–5 5
100% current
ΔI
CHOP
Chopping current accuracy %
xVREF = 2.5 V, derived from V3P3; 20% -
–10 10
56% current
(1) Factory option 100 kHz.
(2) Factory options for 2.5 ms, 5 ms or 6.25 ms.
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Product Folder Link(s): DRV8823