March, 2015
www.us-
tech.com
Melexis Introduces Fan Driver IC for Energy Efficient Cooling Systems
Tessenderlo, Belgium — Melexis has introduced its MLX90297, a 600mA single coil fan driver IC. Aimed at de- velopment of energy-efficient cooling
successful MLX90287 device. It inte- grates a high sensitivity Hall Effect sensor with two powerful half bridge output stages. In addition to the minimum
speed setting incorporated into the Model MLX90287, the speed curve of Model MLX90297 can also be tuned through inclusion of just one extra resistor. The soft start and soft switching mechanisms have been further refined to achieve exception- al acoustic noise levels, as well as low vibration at higher speeds, without maximum motor torque being sacri- ficed. The reduced driver resistance
“Green” fan operation made possible by new fan driver IC.
system designs, this latest device adds to the company’s portfolio of All-in-One single coil fan drivers, and is a further development of the
Connectors Warminster, PA — Nicomatic is now offering a low profile crimp-to-dis- crete non-disengagable housing. Using proven CrimpFlex connector contacts, the company developed this all-new housing to provide a robust and cost-effective crimp-to-discrete wire solution. The DFM series offers a thin package size 0.100-in. (2.54mm) high, and conforms to CrimpFlex electrical, thermal and mechanical characteristics making it
Nicomatic: Crimp to Discrete Wire
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(RDSon) of the MLX90297, in combi- nation with the built-in current lim- iting, allows application of this fan driver to fans with coil resistances substantially lower than 10Ohm. The electro-static discharge (ESD) performance has been further en- hanced to achieve 9kV HBM. The device is offered in a
straight lead SOIC8 package. A DFN10 3 x 3mm exposed pad pack- age option is also available for very small fans and fans with motor cur- rents up to 600mA. According to the company, the All-In-One MLX90287 in straight
lead SOIC8 product lowers the total bill-of-materials cost and the com- plexity of the PCB design significant- ly by reducing the number of discrete components involved. Previously, up to 22 resistors and transistors might have been needed for a TSSOP16 fan driver with an external hall sensor. Now just two resistors, and one de- coupling capacitor are required for
SOIC8 fan driver solution. Contact: Melexis, 15 Trafalgar
Square, Nashua, NH 03063 % 603-204-2909 fax: 603-204-1207
E-mail:
pre@melexis.com Web:
www.melexis.com
Page 53
CrimpFlex connector.
the best solution for design engineers who need to transition from flat to round in an elegant package. Addi- tional features of the Nicomatic DFM series connector: available in 1 to 20 positions; side-by-side compatible for higher pin counts; ability to cut for faster prototype pin counts. CrimpFlex specs: thermal, –40
to +105°C; direct current per contact, 3A permanent;
250VAC/DC; material: UL94V-0; uses standard Nicomatic CrimpFlex and CrimpFlex® Discrete wire contacts; can use male or female contacts inter- changeably in the housing (either 12410 or 14106 CrimpFlex to 14671 or 14672 discrete; 2.54mm pitch. The company’s DFM Series
Connectors are RoHS and REACH compliant and halogen free. The housing is black thermoplastic. Typi- cal applications include: sensors; dis- plays; automotive; robotics; medical
devices; EL; appliances. Contact: Nicomatic North Amer- ica, 165 Veterans Way, Unit 200,
Warminster, PA 18974 % 215-444-9580 fax: 215-444-9581 E-mail:
sales@nicomatic.net Web:
www.nicomatic.com
Sales and Service by rated voltage,
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The GL Fully Automatic Screen Printer is GKG’s most popular machine, designed for printed circuit boards (PCB) with a maximum size of 510 x 510 mm. The printer comes standard with advanced features such as Stencil Position Memory (SPM), Auto Pressure Check (APC), auto PCB thickness adjustment, a combination of top/side PCB clamping function, and bottom-side PCB support pins locating guidance system.
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