DRV8860_16 Datasheet, PDF (1/41 Pages) Texas Instruments – 8-Channel Serial Interface Low-Side Driver

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DRV8860, DRV8860A
SLRS065E – SEPTEMBER 2013 – REVISED NOVEMBER 2015
DRV8860x 38-V 8-Channel Serial Interface Low-Side Driver
1 Features
•1 8-Channel Protected Low-side Driver
– Eight NMOS FETs with Overcurrent Protection
– Integrated Inductive Catch Diodes
– Serial Interface
– Open/Short Load Detection (DRV8860 only)
– Configurable 100% Output Timing
– Configurable PWM Duty Cycle
• Continuous Current Driving Capability
– 560 mA (Single Channel on) PW and PWP
– 200 mA (8 Channels on) PW
– 330 mA (8 Channels on) PWP
– Support Parallel Configuration
• 8 V to 38 V Supply Voltage Range
• Input Digital Noise Filter for Noise Immunity
• Internal Data Read Back Capability for Reliable
Control
• Protection and Diagnostic Features
– Overcurrent Protection (OCP)
– Open Load Detection (OL)
– Overtemperature Shutdown (OTS)
– Undervoltage Lockout (UVLO)
– Individual Channel Status Report
– Fault Condition Alarm
2 Applications
• Relays, Unipolar Stepper Motors
• Solenoids, Electromagnetic Drivers
• General Low-side Switch Applications
• LED driver with dimmer functionality (DRV8860A)
3 Description
The DRV8860 provides an 8-channel low side driver
with overcurrent protection and open/shorted load
detection. It has built-in diodes to clamp turn-off
transients generated by inductive loads, and can be
used to drive unipolar stepper motors, DC motors,
relays, solenoids, or other loads.
The PWP package can supply up to 330 mA × 8
channel and The PW package can supply up to 200
mA × 8 channel continuous output current. A single
channel can deliver up to 560 mA continuous output
current.
A serial interface is provided to control the DRV8860
output drivers, configure internal setting register and
read the fault status of each channel. DRV8860
devices can be daisy-chained together to use a single
serial interface. Energizing-time and holding-PWM-
Duty cycles are configurable through serial interface
as well. These functions allow for cooler running than
always-on solutions.
Internal shutdown functions are provided for
overcurrent protection, short-circuit protection,
undervoltage lockout, and overtemperature.
DRV8860A does not include open load detection.
Fault information for each channel can be read out
through serial interface and indicated by an external
fault pin.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8860
TSSOP (16)
HTSSOP (16)
5.00 mm × 6.40 mm
5.00 mm × 4.40 mm
DRV8860A
TSSOP (16)
5.00 mm × 6.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematic
8 to 38 V
ENABLE
DRV8860
LATCH
CLK
DIN
DOUT
nFAULT
8 Channel Serial
Interface
Low-Side Driver
600
500
VM
N=1
400
N=2
300
200
100
0
0
N=4
N=8
N: Number of outputs active
12.5 25.0 37.5 50.0 62.5 75.0 87.5 100.0
Duty Cycle (%)
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.