DRV8821_15 Datasheet, PDF (5/23 Pages) Texas Instruments – DUAL STEPPER MOTOR CONTROLLER/DRIVER

DRV8821
www.ti.com
SLVS912I – JANUARY 2009 – REVISED JANUARY 2014
DISSIPATION RATINGS
BOARD
Low-K ⁽¹⁾
Low-K ⁽²⁾
High-K ⁽³⁾
High-K ⁽⁴⁾
PACKAGE
DCA
R_θJA
75.7°C/W
32°C/W
30.3°C/W
22.3°C/W
DERATING FACTOR
ABOVE T_A = 25°C
13.2 mW/°C
31.3 mW/°C
33 mW/°C
44.8 mW/°C
T_A < 25°C
1.65 W
3.91 W
4.13 W
5.61 W
T_A = 70°C
1.06 W
2.50 W
2.48 W
3.59 W
T_A = 85°C
0.86 W
2.03 W
2.15 W
2.91 W
(1) The JEDEC Low-K board used to derive this data was a 76-mm x 114-mm, 2-layer, 1.6-mm thick PCB with no backside copper.
(2) The JEDEC Low-K board used to derive this data was a 76-mm x 114-mm, 2-layer, 1.6-mm thick PCB with 25-cm² 2-oz copper on back
side.
(3) The JEDEC High-K board used to derive this data was a 76-mm x 114-mm, 4-layer, 1.6-mm thick PCB with no backside copper and
solid 1-oz internal ground plane.
(4) The JEDEC High-K board used to derive this data was a 76-mm x 114-mm, 4-layer, 1.6-mm thick PCB with 25-cm² 1-oz copper on back
side and solid 1-oz internal ground plane.
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
V_M
I_MOT
V_REF
Motor power supply voltage range
Continuous motor drive output current⁽¹⁾
VREF input voltage
(1) Power dissipation and thermal limits must be observed.
MIN NOM MAX UNIT
8
32
V
1
1.5
A
1
4
V
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
POWER SUPPLIES
I_VM
V_M operating supply current
I_VMSD V_M shutdown supply current
V_UVLO V_M undervoltage lockout voltage
V_CP
Charge pump voltage
V_V3P3 V_V3P3 output voltage
LOGIC-LEVEL INPUTS
V_M = 24 V, no loads
V_M = 24 V, ABENBLn = CDENBLn = 1
V_M rising
Relative to V_M
V_IL
V_IH
V_HYS
I_IN
Input low voltage
Input high voltage
Input hysteresis
Input current
(internal pulldown current)
VIN = 3.3 V
OVERTEMPERATURE PROTECTION
t_TSD
Thermal shutdown temperature
MOTOR DRIVER
Die temperature
R_ds(on)
R_ds(on)
I_OFF
f_PWM
t_BLANK
t_F
t_R
Motor AB FET on resistance
(each individual FET)
Motor CD FET on resistance
(each individual FET)
Off-state leakage current
Motor PWM frequency⁽¹⁾
ITRIP blanking time⁽²⁾
Output fall time
Output rise time
V_M = 24 V, I_O = 0.8 A, T_J = 25°C
V_M = 24 V, I_O = 0.8 A, T_J = 85°C
V_M = 24 V, I_O = 0.8 A, T_J = 25°C
V_M = 24 V, I_O = 0.8 A, T_J = 85°C
MIN
TYP
MAX UNIT
5
8 mA
2.5 μA
6.5
8V
12
V
3.20
3.30
3.40 V
2
0.3
0.45
0.7 V
V
0.6 V
100 μA
150
°C
0.25
Ω
0.31
0.37
0.30
Ω
0.38
0.45
±12 μA
45
50
55 kHz
3.75
μs
50
300 ns
50
300 ns
(1) Factory option 100 kHz.
(2) Factory options for 2.5 μs, 5 μs or 6.25 μs.
Copyright © 2009–2014, Texas Instruments Incorporated
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