A8513KLYTR-T Allegro Micro Systems, Inc., A8513KLYTR-T Datasheet

A8513KLYTR-T

Manufacturer Part Number

A8513KLYTR-T

Description

Manufacturer

Allegro Micro Systems, Inc.

Datasheet

1.A8513KLPTR-T.pdf (24 pages)

Specifications of A8513KLYTR-T

Pack_quantity

4000

Comm_code

85423990

Lead_time

175

Current page: 1 of 24
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Features and Benefits

• AEC-Q100 Qualified

• Wide input voltage range of 4.5 to 40 V for start/stop,

• Boost converter switching frequency up to 2 MHz,

• Excellent input voltage transient response

• Internal secondary OVP for redundant protection

• Fully integrated LED current sink and boost converter with

• Maximum LED current of 150 mA

• Drives up to 14 series LEDs

• Single EN/PWM pin interface for PWM Dimming and

• 5000:1 PWM dimming at 200 Hz

Continued on the next page…

Packages:

A8513-DS Rev. 2

cold crank and load dump requirements

allowing operation above the AM band

60 V DMOS FET

Enable function

Not to scale

VDD

ISET

VIN

VDD

FAULT

EN/PWM

ISET

A8513

GND

PAD

with exposed thermal pad

Wide Input Voltage Range, High Efficiency

COMP

16-pin TSSOP

10-pin MSOP

(LP package)

(LY package)

OVP

LED

Typical Application Circuit

OVP1

OVP2

VOUT

OUT

(Optional)

Description

The A8513 is a single-output white LED (WLED) driver for

LCD backlighting. It integrates a current-mode boost converter

with an internal power switch and one current sink. 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 A8513 provides protection against

output short and overvoltage, open or shorted diode, open or

shorted LED pin, shorted boost switch or inductor, shorted

cycle current limit function provides soft start and protects the

internal current switch against high current overloads.

The A8513 is provided in a 10-pin MSOP package (suffix LY)

and a 16-pin TSSOP package (suffix LP). Both packages have

an exposed thermal pad for enhanced thermal dissipation, and

are lead (Pb) free, with 100% matte tin leadframe plating.

Applications:

• LCD backlighting for:

▫ Flatbed Scanners

▫ LED Lighting

SET

▫ Automotive infotainment

▫ Automotive cluster

▫ Automotive center stack

▫ Industrial LCD displays

▫ Portable DVD players

resistor, and IC overtemperature. A dual level cycle-by-

Fault Tolerant LED Driver

Boost f

0.25/0.5/1

(MHz)

(V)

(min)

String (max)

A8513

LEDs per

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