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DRV8823 Datasheet(数据表) 5 Page - Texas Instruments

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部件型号  DRV8823
说明  4-BRIDGE SERIAL INTERFACE MOTOR DRIVER
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
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DRV8823 Datasheet(HTML) 5 Page - Texas Instruments

 
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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
VM
Motor power supply voltage range
8
32
V
IMOT
Continuous motor drive output current(1)
1
1.5
A
VREF
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
IVM
VM operating supply current
VM = 24 V, no loads
5
8
mA
VUVLO
VM undervoltage lockout voltage
VM rising
6.5
8
V
VCP
Charge pump voltage
Relative to VM
12
V
VV3P3
VV3P3 output voltage
3.20
3.30
3.40
V
LOGIC-LEVEL INPUTS (INTERNAL PULLDOWNS)
VIL
Input low voltage
0.7
V
VIH
Input high voltage
2
V
VHYS
Input hysteresis
0.3
0.45
0.6
V
Input current
IIN
VIN = 3.3 V
100
mA
(internal pulldown current)
OVERTEMPERATURE PROTECTION
TTSD
Thermal shutdown temperature
Die temperature
150
°C
MOTOR DRIVERS
VM = 24 V, IO = 0.8 A, TJ = 25°C
0.25
Motor #1 FET on resistance
Rds(on)
(each individual FET)
VM = 24 V, IO = 0.8 A, TJ = 85°C
0.31
0.37
VM = 24 V, IO = 0.8 A, TJ = 25°C
0.30
Motor #2 FET on resistance
Rds(on)
(each individual FET)
VM = 24 V, IO = 0.8 A, TJ = 85°C
0.38
0.45
IOFF
Off-state leakage current
±12
mA
fPWM
Motor PWM frequency(1)
45
50
55
kHz
tBLANK
ITRIP blanking time(2)
3.75
ms
tF
Output fall time
50
300
ns
tR
Output rise time
50
300
ns
IOCP
Overcurrent protect level
1.5
3
4.5
A
tOCP
Overcurrent protect trip time
2.5
ms
tMD
Mixed decay percentage
Measured from beginning of PWM cycle
75
%
CURRENT CONTROL
IREF
xVREF input current
xVREF = 3.3 V
–3
3
mA
xVREF = 2.5 V, derived from V3P3; 71% -
–5
5
100% current
ΔICHOP
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.
Copyright © 2009–2010, Texas Instruments Incorporated
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Product Folder Link(s): DRV8823




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