Fault Tolerant LED Driver can drive up to 24 LEDs at 120 mA.
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Press Release Summary:
Designed for LCD backlighting in consumer and industrial displays, multi-output white LED driver, A8515 can operate from single power supply of 5-40 V. Packaged in eTSSOP-16 (LP) exposed pad package, device integrates current-mode boost converter with internal power switch and 2 current sinks. LED current sinks in unit can be paralleled together to achieve LED currents up to 240 mA.
Original Press Release:
Allegro MicroSystems, Inc. Introduces a New High Performance Fault Tolerant LED Driver
Fully Integrated Solution Provides 240 mA total via 2-Channels
Worcester, MA - November 10, 2010 - Allegro MicroSystems, Inc. introduces a new multi-output white LED driver for LCD backlighting in consumer and industrial displays. Allegro's new A8515 device has advanced protection features to provide optimized viewing. It integrates a current-mode boost converter with internal power switch and two current sinks.
The boost converter can drive up to 24 LEDs at 120 mA. The two LED current sinks can also be paralleled together to achieve LED currents up to 240 mA. This new device can operate from a single power supply from 5 V to 40 V. The low 720 mV regulation voltage on LED current sources reduces power loss and improves efficiency. A comprehensive fault table is included in the datasheet to describe the leading-edge performance and protection features of the A8515. It also integrates a driver for an (optional) external input disconnect switch.
The A8515GLPTR-T is available in an eTSSOP-16 (LP) exposed pad package for advanced thermal performance and is 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 integrated circuits. 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.
