SERVO 12.2015 13
reduces board space by up to 25 percent.
• Optimal power consumption: The devices use
standard low cost, low power resistors to set the current
threshold, limiting startup and stall inrush currents. The
ability to limit current to a known level can significantly
reduce the system power requirements and bulk
capacitance needed to maintain a stable voltage —
especially for motor startup and stall conditions.
• Simplified design: Board layout with accurate current
regulation is simplified because no sense routing is required
with the DRV8871.
• Wide supply range: The devices offer a wide 6.5V to
45V motor supply voltage to support industry-standard 12V
and 24V supplies.
The DRV8870EVM, DRV8871EVM, and DRV8872EVM
evaluation modules (EVMs) demonstrate the capabilities
and performance of their respective brushed DC motor
drivers. The EVMs also incorporate the TPS7A16 low
dropout regulator (LDO) and the TLC555 low power timer.
Retail price on the EVMs is $49.
To support their brushed DC motor challenges,
designers can search for solutions, ask questions, and share
knowledge with fellow engineers and TI experts on the TI
E2E™Community Motor Driver forum.
For further information, please contact:
Dual Mode Proximity and
Toggle Switch
The J2 LED Lighting, LLC AIR2 is a dual mode touchless witch for low voltage LED lighting control. The modes
of operation are door proximity and hand wave toggle,
both providing on/off control. The AIR2 is software driven
providing automatic changes between mode functions. The
body of the AIR2 is very small with a body length slightly
under 1.80”, a width under 0.70”, and a thickness less than
0.30”.
The operation of the AIR2 is such that in the door
proximity mode when a surface (the door) is in near
proximity (less than 100 mm/four inches), the switch is off.
When the door surface moves out of range of the AIR2
sensor face, the switch turns on the controlled light. When
no surface is in front of the AIR2 sensor face for more than
10 seconds, the software switches to the hand wave toggle
mode. Moving a hand past the sensor face within the sense
range toggles the light off and the switch is latched into
this off position. The AIR2 will stay latched off until the
hand wave in front of the AIR2 sensor face is repeated for
on latching. The AIR2 will revert back to the door proximity
mode when a surface is in front of the sensor face more
than 10 seconds. The AIR2 may be operated as a door
proximity switch or a hand wave toggle switch, depending
on the needs of the application.
The AIR2 has a sleek profile with an extruded
aluminum case with moisture resistant sealed front and
back covers. The AIR2 operates from 7-24 volts DC. The
maximum current switched at 7-12 volts is 2. 5 amps, while
the maximum current at 24 volts DC is 2.0 amps. The AIR2
can be operated from a nine volt battery for portable
applications such as theatrical props or scenery.
The AIR2 is equipped with male and female DC barrel
type connectors of the 5. 5 mm x 2.1 mm size jack and
plug. The cable length is a nominal 18” (460 mm) flexible
UL2464 rated black PVC.
Securing the unit for general illumination applications in
cabinet work for either door proximity mode or under a
counter hand wave toggle mode, double-sided tape can be
used on the unit’s flat body shape. For applications in prop
and scenery use, the unit can be temporarily secured with
Gaffer’s tape or hot glue. For general lighting applications,
the AIR2 can be used with a 30 watt/12 volt DC constant
voltage LED driver power supply.
The AIR2 is priced at $16.99 and is well suited for
various LED lighting applications, for example:
• Theatrical prop and scenery LED light control
• DJ lights and audio rack lights
• Costume lights
• Architectural cabinet lighting
• Commercial and industrial applications
For further information, please contact:
www.ti.com Texas Instruments
www.j2ledlighting.com J2 LED Lighting LLC
If you have a new product that you would like us
to run in our New Products section, please email a
short description (300-500 words) and a photo
of your product to:
newproducts@servomagazine.com
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