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A8502KLPTR-T Datasheet (PDF) - Allegro MicroSystems

A8502KLPTR-T Datasheet PDF - Allegro MicroSystems
Part # A8502KLPTR-T
Download  A8502KLPTR-T Download

File Size   1244.35 Kbytes
Page   35 Pages
Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems
Description Wide Input Voltage Range, High Efficiency Fault Tolerant LED Driver

A8502KLPTR-T Datasheet (PDF)

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A8502KLPTR-T Datasheet PDF - Allegro MicroSystems

Part # A8502KLPTR-T
Download  A8502KLPTR-T Click to download

File Size   1244.35 Kbytes
Page   35 Pages
Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems
Description Wide Input Voltage Range, High Efficiency Fault Tolerant LED Driver

A8502KLPTR-T Datasheet (HTML) - Allegro MicroSystems

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A8502KLPTR-T Product details

Description

The A8502 is a multi-output white LED driver for small-size LCD backlighting. It integrates a current-mode boost converter with internal power switch and two current sinks. The boost converter can drive up to 24 LEDs, 12 LEDs per string, at 120 mA. The LED sinks can be paralleled together to achieve even higher LED currents, up to 240 mA. The A8502 can operate with a single power supply, from 5 to 40 V, which allows the part to withstand load dump conditions encountered in automotive systems.



Features and Benefits

• AEC-Q100 qualified

• Wide input voltage range of 5 to 40 V for start/stop, cold crank and load dump requirements

• Fully integrated LED current sinks and boost converter with 60 V DMOS

• Sync function to synchronize boost converter switching frequency up to 2.3 MHz, allowing operation above the AM band

• Excellent input voltage transient response

• Single resistor primary OVP minimizes VOUT leakage

• Internal secondary OVP for redundant protection

• LED current of 120 mA per channel

• Drives up to 12 series LEDs in 2 parallel strings

• 0.7% to 0.8% LED to LED matching accuracy

• PWM and analog dimming inputs

• 5000:1 PWM dimming at 200 Hz

• Provides driver for optional external PMOS input disconnect switch

• Extensive protection against:

  ▫Shorted boost switch or inductor

  ▫Shorted FSET or ISET resistor

  ▫Shorted output

  ▫Open or shorted LED pin

  ▫Open boost Schottky

  ▫Overtemperature (OTP)



Applications:

LCD backlighting or LED lighting for:

  ▫Automotive infotainment

  ▫Automotive cluster

  ▫Automotive center stack




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About Allegro MicroSystems


Allegro MicroSystems is a semiconductor company that designs, manufactures, and markets high-performance power and sensing solutions. The company was founded in 1990 and is headquartered in Manchester, New Hampshire, USA.

Allegro MicroSystems' product portfolio includes Hall-effect sensors, power ICs, motor drivers, and magnetic digital position sensors. These products are used in a wide range of applications, including automotive, industrial, and consumer electronics.

Allegro MicroSystems is known for its expertise in magnetic sensing technology, which is used in many of its products. The company's products are designed to meet the highest standards of performance and reliability, and are manufactured using the latest technology and materials. Allegro MicroSystems also offers custom design and engineering services to meet the specific needs of its customers.

Allegro MicroSystems has a global presence, with sales offices and representatives located around the world. The company is dedicated to delivering innovative and reliable power and sensing solutions that meet the evolving needs of the electronics industry. In 2021, Allegro MicroSystems went public through an initial public offering (IPO) on the NASDAQ stock exchange.

*This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information.




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