Unique LED Driver With Integrated Hall-Effect Switch

By  | March 10, 2016 | Filed under: Float Switch, Level Sensors, Wireless Sensors

Worcester, MA –Allegro MicroSystems, LLC announces the release of the world’s first LED driver IC that features an integrated Hall-effect switch. The A1569 enables compact, elegant, reliable, and fault-tolerant LED lighting with minimal electrical engineering and low component-count and cost. A single silicon chip integrates: a Hall plate, a small-signal amplifier, chopper stabilization, a Schmitt trigger, and a LED driver with soft on/off and short circuit and thermal protection with automatic recovery. The integrated solid-state Hall-effect switch supports silent, sealed, contactless activation and offers a significant upgrade from failure-prone mechanical switches.

The LED driver features low-noise, adjustable, linear drive of up to 150 mA into one or more LEDs. An optional external capacitor programs the turn-on/turn-off rate, adding an elegant “theater” effect. It is controlled by the Hall-effect switch and turns on and off in response to a magnet. The Hall-effect switch is omnipolar (responsive to both North and South magnetic poles) and highly sensitive (BOP = 40 G) to support a wide range of mechanical configurations and enclosures with various air gaps and degrees of mechanical misalignment.

This new device complements Allegro Microsystem’s existing portfolios of LED drivers and Hall-effect switches. It is targeted at consumer electronics, white goods, boats, RVs, motorcycles, and interior and auxiliary automotive lighting applications such as glove boxes, center consoles, vanity mirrors, trunks/boots, truck beds, etc. The on-board regulator permits operation with supply voltages of 7 to 24 V. Reliability and EMC performance are enhanced with Zener clamps, output short-circuit protection, thermal shutdown, and reverse-battery protection. Superior Hall switch performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, temperature drift, and thermal stress.

The device is available in two versions: the “K” option is an automotive-grade (AEC-Q100) device that operates from –40°C to +125°C; the “E” option is for industrial and consumer applications that operate from –40°C to 85°C. Both versions feature a RoHS-compliant, thermally enhanced SOIC-8 surface-mount package (designator “LJ”).

Pricing in quantities of 1,000 is shown below:

• A1569KLJTR-T – $0.85

• A1569ELJTR-T – $0.68

Allegro MicroSystems

Worcester, MA

508-853-5000
http://www.allegromicro.com

 

Source Article from http://www.sensorsmag.com/product/unique-led-driver-integrated-hall-effect-switch
Unique LED Driver With Integrated Hall-Effect Switch
http://www.sensorsmag.com/product/unique-led-driver-integrated-hall-effect-switch
http://www.sensorsmag.com/rss.xml/category/94
News Room
Sensor industry news including contracts, awards, collaborations, acquisitions, and highlights of new measurement & sensor technology.

Sponsored By:

The Deeter Group

Deeter Electronics Ltd. | Deeter Electronics Inc | Deeter Group Asia | Deeter Group Germany | Deeter Group Corporate

Head & Registered Office:
Deeter Electronics Ltd.
Deeter House,
Valley Road,
Hughenden Valley,
Bucks. HP14 4LW

Tel: +44 (0) 1494 566 046
Fax: +44 (0) 1494 563 961
E-mail: [email protected]


The Deeter Group with products ranging from: , , , continuous , 4-20mA , , , , , , , a , wireless sensor and much more.

If you want a standard or a custom level switch, float switch, level sensor, or wireless sensor, contact us via email [email protected] or call us now on 01494 566 046.

Company Name: The Deeter Group

Location: Hughenden Valley, UK

Deeter Electronics USA
Deeter Electronics USA
Wireless sensor system | Radio telemetry | Level switches | Level sensors | Liquid level sensor | Float switches | Controllers & indicators | Industrial weighing equipment | Electronic circuit design & manufacture | Software design | Reed relays | Ultrasonic level flow sludge & proximity sensors | Proximity sensors & switches | Reed switches | Litz wire | Wago Terminals | Mechanical & magnetic floats | Boiler control |

Deeter Electronics UK
Wireless sensor system | Radio telemetry | Level switches | Level sensors | Liquid level sensor | Float switches | Controllers & indicators | Industrial weighing equipment | Electronic circuit design & manufacture | Software design | Reed relays | Ultrasonic level flow sludge & proximity sensors | Proximity sensors & switches | Reed switches | Litz wire | Wago Terminals | Mechanical & magnetic floats | Boiler control |

Deeter Electronics Europe
Wireless sensor system | Radio telemetry | Level switches | Level sensors | Liquid level sensor | Float switches | Controllers & indicators | Industrial weighing equipment | Electronic circuit design & manufacture | Software design | Ultrasonic level flow sludge & proximity sensors | Proximity sensors & switches | Reed switches | Litz wire | Wago Terminals | Mechanical & magnetic floats | Boiler control |

Sensor Magazine Websites
Explosion Proof Sensors UK | Explosion Proof Sensors | Water Level Measurement | Liquid Level Sensing | Liquid Level Measurement | Liquid Level Sensors UK | Liquid Level Sensors Europe | Wireless Sensors | Sensor Magazine | Industrial Sensors