DRV8818_15 Datasheet, PDF (4/31 Pages) Texas Instruments – DRV8818 Stepper Motor Controller IC

DRV8818
SLVSAX9D – SEPTEMBER 2011 – REVISED JANUARY 2015
www.ti.com
PIN
NAME
NO.
OUTPUTS
AOUT1
4
AOUT2
25
BOUT1
11
BOUT2
18
HOMEn
2
I/O ⁽¹⁾
Pin Functions (continued)
DESCRIPTION
EXTERNAL COMPONENTS OR CONNECTIONS
O Bridge A output 1
O Bridge A output 2
O Bridge B output 1
O Bridge B output 2
O Home position
Connect to bipolar stepper motor winding
Positive current is AOUT1 → AOUT2
Connect to bipolar stepper motor winding
Positive current is BOUT1 → BOUT2
Logic low when at home state of step table, logic high at other states
7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)^{(1) (2) (3)}
MIN
MAX
UNIT
V_MX
Power supply voltage
V_CC
Power supply voltage
Digital pin voltage
–0.3
35
V
–0.3
7
V
–0.5
7
V
V_REF
I_O(peak)
P_D
ISENSEx ⁽⁴⁾
Input voltage
Peak motor drive output current
Continuous total power dissipation
Pin voltage
–0.3
V_CC
V
Internally limited
See Thermal Information
–0.875
0.875
V
T_J
Operating junction temperature
T_stg
Storage temperature
–40
150
°C
–60
150
°C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating
Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to network ground terminal.
(3) Power dissipation and thermal limits must be observed.
(4) Transients of ±1V for less than 25ns are acceptable.
7.2 ESD Ratings
V_(ESD)
Electrostatic
discharge
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins⁽¹⁾
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins⁽²⁾
VALUE
±4000
±1000
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
UNIT
V
7.3 Recommended Operating Conditions
T_A = 25°C (unless otherwise noted)
V_M
V_CC
V_REF
R_X
C_X
Motor power supply voltage range⁽¹⁾
Logic power supply voltage range
VREF input voltage
R_X resistance value
C_X capacitance value
(1) All V_M pins must be connected to the same supply voltage.
MIN NOM MAX UNIT
8
35
V
3
5.5
V
0
V_CC
V
12
56
100
kΩ
470
680 1500
pF
4
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