A6285EET-T

更新时间： 2024-11-09 03:16:55

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器
页数	文件大小	规格书
13页	545K
描述
16-Channel Constant-Current Latched LED Driver with Open LED Detection and Dot Correction

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中文翻译

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数据手册

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A6285EET-T 数据手册

A6285

16-Channel Constant-Current Latched LEDDriver

with Open LED Detection and Dot Correction

Features and Benefits

Description

▪ 3.0 to 5.5 V logic supply range

The A6285 is designed for LED display applications. This

BiCMOS device includes an On/Off shift register, a Dot

Correction(DC)shiftregister, accompanyingdatalatches, and

16 MOS constant-current sink drivers with active pull-ups that

can be enabled or disabled as required by the application.

▪ Schmitt trigger inputs for improved noise immunity

▪ Power-On Reset (POR)

▪ Up to 80 mA constant-current sinking outputs

▪ LED open circuit detection (LOD)

▪ Dot correction (DC) for adjusting LED light intensity on

each channel with 7-bit resolution

▪ Low-power CMOS logic and latches

The CMOS shift registers and latches allow direct interfacing

with microprocessor-based systems. With a 3.3 or 5 V logic

supply, typical serial data input rates can reach up to 30 MHz.

The LED drive current level can be set by a single external

resistor, selected by the application designer. A CMOS serial

dataoutputpermitscascadingofmultipledevicesinapplications

requiring additional drive lines.

▪ High data input rate up to 30 MHz

▪ Active output pull-ups with enable/disable

▪ 20 ns typical staggering delay between outputs

▪ Internal UVLO and thermal shutdown (TSD) circuitry

▪ Fault output flags for an LED open circuit (LOD) or a

thermal shutdown (TSD) condition

IndividualLEDlightintensitycanbeadjustedtocorrectforlight

intensity variations by using the Dot Correction feature.

Package: 32 Contact QFN (suffix ET)

OpenLEDconnectionscanbedetected,andthensignaledback

to the host microprocessor through the serial data output (SDO

pin). The FAULT output flags an LED open circuit (LOD)

conditionorathermalshutdown(TSD)condition.Astaggering

delay on the load outputs during ON/OFF transitions helps to

reduce ground bounce.

5 mm × 5 mm

0.90 mm nominal overall height

Continued on the next page…

Not to scale

Typical Application

V_DD

V_LED

10 μF

100 KΩ

PE OUT0

OUT15

SDI

SDO

FAULT

V_DD

CLK

100 nF

Controller

A6285

MODE

REXT

SDO

6285-DS

12 3 4 5 6 7...13

中文翻译

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与A6285EET-T相关器件

型号	品牌	获取价格	描述	数据表
A6285EETTR-T	ALLEGRO	获取价格	16-Channel Constant-Current Latched LED Driver with Open LED Detection and Dot Correction
A62-FREQ-OUT23	CONNOR-WINFIELD	获取价格	CMOS/TTL Output Clock Oscillator, 13MHz Min, 150MHz Max, HERMETICALLY SEALED, WELDED, META
A62L256	AMICC	获取价格	32K X 8 BIT LOW VOLTAGE CMOS SRAM
A62L256-55LL	AMICC	获取价格	32K X 8 BIT LOW VOLTAGE CMOS SRAM
A62L256-55LLU	AMICC	获取价格	32K X 8 BIT LOW VOLTAGE CMOS SRAM
A62L256-70LL	AMICC	获取价格	32K X 8 BIT LOW VOLTAGE CMOS SRAM
A62L256-70LLU	AMICC	获取价格	32K X 8 BIT LOW VOLTAGE CMOS SRAM
A62L256M-55LL	AMICC	获取价格	32K X 8 BIT LOW VOLTAGE CMOS SRAM
A62L256M-55LLU	AMICC	获取价格	32K X 8 BIT LOW VOLTAGE CMOS SRAM
A62L256M-70LL	AMICC	获取价格	32K X 8 BIT LOW VOLTAGE CMOS SRAM

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