Motor Controller IC features compact, all-in-one design.
Press Release Summary:
Designed for single-coil brushless DC fans/motors, AH5798 includes full-bridge driver with soft switching that supports source and sink currents up to 300 mA. Its locked rotor detection and self restart protect coil from overheating or burning out and initiate automatic restart once locked rotor is released. Tachometer open-drain output simplifies interface for external status/speed monitoring. Device operates in temperatures from -40 to +105ºC, with operating voltage from 1.8-5.5 V.
Original Press Release:
Diodes Incorporated Announces Space-Saving Smart Motor Controller
Dallas, Texas - Diodes Incorporated (Nasdaq: DIOD), a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete and analog semiconductor markets, today announced an all-in-one motor controller IC for single-coil low-power brushless DC fans and motors. Providing all necessary drive, protection and interface functionality, the SOT89-5L packaged AH5798 will substantially reduce component counts and PCB area in small fan and motor applications, including cooling fans for netbooks and notebooks.
Integrating a full-bridge driver featuring soft switching, the controller requires no external driver components and yet supports average source and sink currents up to 300mA. The device's soft switching operation makes it particularly suitable for low noise applications. Further space saving comes from the AH5798's built-in Hall sensor and amplifier.
The controller's locked rotor detection and self restart functions help protect the coil from over-heating or burning out and initiate automatic restart once the locked rotor is released. The AH5798 also includes a tachometer open-drain output to make the device easier to interface for external status and speed monitoring. The chip's operating voltage is low from just 1.8V to 5.5V, and ambient operating temperature rating is high from -40ºC to +105ºC.
For more information, please visit the Company's website at www.diodes.com.
About Diodes Incorporated
Diodes Incorporated (Nasdaq: DIOD), a Standard & Poor's SmallCap 600 and Russell 3000 Index company, is a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete and analog semiconductor markets, serving the consumer electronics, computing, communications, industrial and automotive markets. Diodes' products include diodes, rectifiers, transistors, MOSFETs, protection devices, functional specific arrays, amplifiers and comparators, Hall-effect sensors and temperature sensors, power management devices including LED drivers, DC-DC switching regulators, linear voltage regulators and voltage references, along with special function devices including USB power switch, load switch, voltage supervisor and motor controllers. The Company's corporate headquarters and logistics office are located in Dallas, Texas. A sales, marketing, and engineering office is located in Westlake Village, California. Design centers are located in Dallas; San Jose, California; Taipei, Taiwan; Manchester, England and Neuhaus, Germany. The Company's wafer fabrication facilities are located in Kansas City, Missouri and Manchester; with two manufacturing facilities located in Shanghai, China, another in Neuhaus, and a joint venture facility located in Chengdu, China. Additional engineering, sales, warehouse and logistics offices are located in Taipei; Hong Kong; Manchester and Munich, Germany, with support offices located throughout the world. For further information, including SEC filings, visit the Company's website at www.diodes.com.
