LED Backlight Driver IC meets needs of medium/large displays.

Press Release Summary:




Suited for backlighting LCD monitors and TVs, A8516 WLED/RGB driver helps designers reduce component count by integrating boost controller to drive external MOSFET and 6 internal current sink channels capable of up to 80 mA each. Channels can be combined to achieve higher currents, and boost converter operates in constant frequency (programmable) current mode control. LED sink current is set by external R_ISET resistor, and PWM dimming allows control of LED currents.



Original Press Release:



Allegro MicroSystems, Inc. Announces a New LED Backlight Driver for Medium/Large Displays



Ideal for LED Backlit LCD Monitors and Televisions

Worcester, MA - Allegro MicroSystems, Inc. announces a new multi-output WLED/RGB driver for backlighting LCD monitors and televisions. The A8516 is a versatile and economical LED driver IC that will enable system designers to reduce component count and overall system cost. The device integrates a boost controller to drive an external MOSFET and six internal current sink channels capable of up to 80 mA each, and channels can be combined together to achieve even higher currents.

The boost converter operates in constant frequency (programmable) current mode control. The LED sink current is set by an external R_ISET resistor and PWM dimming allows LED currents to be controlled. The A8516 provides protection against overvoltage, open or shorted LED string, and over temperature. A dual level cycle-by-cycle current limit function provides soft start and protects against overloads.

The A8516 is offered in a 24-pin TSSOP package (LP), a 24-pin SOICW package (LB), with internally fused pins for en¬hanced thermal dissipation, both with an exposed thermal pad for enhanced thermal dissipation. Both packages are lead (Pb) free, with 100% matte tin lead frame plating. The A8516ELPTR-T and A8516ELBTR-T are priced at $1.54 in quantities of 1,000.

About Allegro
Allegro MicroSystems, Inc. is a leader in developing, manufacturing and marketing high-performance power and Hall-effect sensor IC's. Allegro's innovative solutions serve high-growth applications within the automotive, communications, computer/office automation, consumer and industrial markets. Allegro is headquartered in Worcester, Massachusetts (USA) with design and applications centers located in North and South America, Asia, and Europe. Further information about Allegro can be found at www.allegromicro.com.

Contact information: Stephanie Fennelley, Allegro MicroSystems, 115 Northeast Cutoff, Worcester, MA 01606

All Topics