Datasheet > A8517

A8517

更新时间： 2022-02-26 13:30:29

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
66页	2631K
描述
Extensive diagnostics and fault reporting

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A8517 数据手册

A8517

Wide Input Voltage, Fault Tolerant, Independently Controlled

Multi-Channel LED Driver with I²C interface

DESCRIPTION

FEATURES AND BENEFITS

• AEC-Q100 qualified

TheA8517isaprogrammablemulti-outputLEDdriver, which

canbeusedforavarietyofLEDDriverapplications.Itintegrates

acurrent-modeboostconverterwithinternalpowerswitchand

10 current sinks. The IC operates from 4.5 to 36 V, and is able

to withstand up to 40 V load-dump conditions encountered in

automotive systems.

• Wide input voltage range of 4.5 to 36 V

• Operates down to 3.9 V (V_INfalling) for idle stop, and up

to 40 V for load dump

• Integrated boost converter with DMOS switch and OVP

protection up to 39 V

• 10 fully integrated LED current sinks, with individually

programmable current up to 60 mA per channel

• I²C™ interface for programming LED current, PWM

dimming, and various protection thresholds per channel

• Ability to drive multiple loads from a single IC

• Extensive PWM dimming (up to 10,000:1 at 100 Hz),

individually programmable for each channel

• Extensive diagnostics and fault reporting

The I²C interface allows the user to set the LED currents

individually, upto60mAperLEDchannel. Adjacentchannels

may be combined to drive higher-current LED strings. The

PWM dimming duty cycle is independently controlled for

each LED channel, and each channel can be enabled/disabled

independently if needed.

This flexibility makes the A8517 a single solution for a wide

range of LED applications, in some cases offering the ability

to replace two or more LED driver ICs with a single device.

Continued on the next page…

PACKAGE:

28-pin TSSOP with exposed thermal pad

(suffix LP)

APPLICATIONS:

Automotive:

• Infotainment

• Cluster

• Center-stack lighting

• Head-up display (HUD)

• Daytime running lights (DRL)

Not to scale

(4.5 to 36 V)

CIN

VOUT

SENSE

CQ1

COUT

GATE

PGND

INS

VIN

A8517

OVP

LED1

LED2

VDD

CVDD

ADDR

PAD

ADDR

SDA

SCL

LED10

I C Interface

COMP

GND

External

FSET/SYNC

Synchronization

FSET

FLAG GPO1 GPO2 AGND

Status

Interrupt

A Optional

B External pull-up voltage, or

connected to VDD

Typical Application Drawing

A8517-DS, Rev. 9

February 10, 2017

12 3 4 5 6 7...66

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