DRV8821_16 Datasheet, PDF (5/32 Pages) Texas Instruments – Dual Stepper Motor Controller and Driver

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DRV8821
SLVS912J – JANUARY 2009 – REVISED JANUARY 2016
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
V_M
I_MOT
V_REF
Motor power supply voltage
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
6.4 Thermal Information
THERMAL METRIC⁽¹⁾
DRV8821
DCA (HTSSOP)
UNIT
48 PINS
R_θJA
R_θJC(top)
R_θJB
ψ_JT
ψ_JB
R_θJC(bot)
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
31.3
°C/W
16.3
°C/W
15
°C/W
0.6
°C/W
14.9
°C/W
0.6
°C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
6.5 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.
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