DRV8824_16 Datasheet, PDF (4/35 Pages) Texas Instruments – Stepper Motor Controller IC

DRV8824
SLVSA06J – OCTOBER 2009 – REVISED JULY 2014
www.ti.com
NAME
STATUS
nHOME
nFAULT
OUTPUT
ISENA
ISENB
AOUT1
AOUT2
BOUT1
BOUT2
PIN
PWP
27
18
6
9
5
7
10
8
RHD
2
21
9
12
8
10
13
11
I/O ⁽¹⁾
Pin Functions (continued)
DESCRIPTION
EXTERNAL COMPONENTS OR CONNECTIONS
OD Home position
OD Fault
IO Bridge A ground / Isense
IO Bridge B ground / Isense
O
Bridge A output 1
O
Bridge A output 2
O
Bridge B output 1
O
Bridge B output 2
Logic low when at home state of step table
Logic low when in fault condition (overtemperature, overcurrent)
Connect to current sense resistor for bridge A.
Connect to current sense resistor for bridge B.
Connect to bipolar stepper motor winding A.
Positive current is AOUT1 → AOUT2
Connect to bipolar stepper motor winding B.
Positive current is BOUT1 → BOUT2
7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature (unless otherwise noted) ^{(1) (2)}
MIN
MAX UNIT
V_(VMx)
V_(VMx)
Power supply voltage
Power supply ramp rate
Digital pin voltage
–0.3
47
V
1 V/µs
–0.5
7
V
V_(xVREF)
Input voltage
ISENSEx pin voltage⁽³⁾
–0.3
4
V
–0.8
0.8
V
Peak motor drive output current, t <1 μs
Continuous motor drive output current⁽⁴⁾
Internally limited
A
1.6
A
Continuous total power dissipation
See Thermal Information
T_J
Operating virtual junction temperature range
–40
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 pin.
(3) Transients of ±1 V for less than 25 ns are acceptable.
(4) Power dissipation and thermal limits must be observed.
7.2 Handling Ratings
T_stg
V_(ESD)
Storage temperature range
Electrostatic ^{Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins (1)}
discharge _{Charged device model (CDM), per JEDEC specification JESD22-C101, all pins}⁽²⁾
MIN
–60
–2000
–500
(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.
MAX
150
2000
500
UNIT
°C
V
7.3 Recommended Operating Conditions
V_(VMx)
V_(xVREF)
I_V3P3
Motor power supply voltage range⁽¹⁾
VREF input voltage⁽²⁾
V3P3OUT load current
(1) All V_M pins must be connected to the same supply voltage.
(2) Operational at VREF between 0 and 1 V, but accuracy is degraded.
MIN
NOM
MAX UNIT
8.2
45
V
1
3.5
V
1
mA
4
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