Quality Standards and Environmental Certifications
×

Contact Sales

Have Questions? Let us help!

We're passionate about innovation. Reach out and you'll hear back from an expert shortly.

Required*

This field is required

This field is required

Please enter a valid Email Address

This field is required

This field is required

This field is required

This field is required

This field is required

This field is required

Thank you for connecting with us!

One of our solution experts will be in touch with you shortly. Keep reading to learn more about our industry leading solutions.


Allegro MicroSystems, Inc. Introduces New Wide Input Voltage Range High-Efficiency Fault Tolerant Single String LED Driver

February 07, 2012
Product Image

Designed for Automotive and Consumer Backlighting LCD Displays

Worcester, MA – Allegro MicroSystems, Inc. introduces a new single-output white LED (WLED) driver designed for backlighting LCD displays for both automotive and consumer designs and the associated application, performance and protection requirements. Allegro’s A8513 integrates a current-mode boost converter with an internal power switch and one current sink. It is a robust solution for applications such as automotive infotainment, cluster, and center-stack, industrial LCD displays, portable DVD players, flatbed scanners, and LED lighting.

The A8513 can operate from a single power supply from 4.5 to 40 V, to accommodate start/stop, cold crank, and load dump requirements. A 2 MHz boost converter switching frequency allows the A8513 to operate above the AM radio band. If required, the fault flag can be used as part of a circuit to drive an external P-FET to disconnect the input supply from the system in the event of a fault. The device provides protection against output short and overvoltage, open or shorted diode, open or shorted LED pin, shorted boost switch or inductor, shorted ISET resistor, and IC overtemperature. A dual level cycle-by cycle current limit function provides soft start and protects the internal current switch against high current overloads.

Allegro’s A8513 is supplied in both eMSOP-10 and eTSSOP-16 packages. These devices will be offered in various oscillator frequencies – please contact Allegro for further details.