Datasheet > A8503

A8503

更新时间： 2024-02-04 08:32:16

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器
页数	文件大小	规格书
17页	409K
描述
High Efficiency 6-Channel, 2 MHz, WLED/RGB Driver

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中文翻译

获取价格

技术参数
数据手册

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A8503 技术参数

生命周期：	Obsolete	Reach Compliance Code：	unknown
风险等级：	5.82	特性阻抗：	50 Ω
最大输入功率 (CW)：	46.99 dBm	最大工作频率：	4000 MHz
最小工作频率：		最高工作温度：	125 °C
最低工作温度：	-55 °C	射频/微波设备类型：	FIXED ATTENUATOR
最大电压驻波比：	1.35	Base Number Matches：	1

A8503 数据手册

High Efficiency 6-Channel, 2 MHz, WLED/RGB Driver for

Medium Displays, with Integrated 55 V Power Switch

A8503

Pin-out Diagram

COMP

VIN

PGND

PWM

DGND

PAD

ISET

AGND

FSET

MODE

FAULT

(Top View)

Terminal List Table

Number

Name

Function

1, 15, 22, 26

Not connected internally

COMP

VIN

Compensation pin; connect 1 μF capacitor to AGND or common star ground

Input supply for the IC; decouple with a 0.1 μF ceramic capacitor

Sets 100% current through LED string; connect R_ISETfrom ISET to AGND

Connect to common star ground

ISET

AGND

FSET

MODE

Set switching frequency; connect R_FSETfrom FSET to AGND

Apply V_ILfor latching faults, apply V_IHfor auto-restart; see Fault Mode table

8, 9, 10, 12,

13, 14

LEDx

LED current sinks; connect unused LEDx pins to ground

LGND

Power ground pin for LEDx current sinks; connect to common star ground

During normal operation, this pin is high (high impedance); at a fault event, this pin pulls low

Device enable

¯¯¯¯¯¯¯¯¯

FAULT

DGND

PWM

PGND

Digital ground; connect to common star ground

PWM LED-current control; apply logic level PWM for dimming

Power ground; connect both pins to common star ground

DMOS switch drain node; tie both pins together on the PCB

20, 21

23, 24

Connect this pin to output capacitor +ve node through R_OVPto enable overvoltage protection; select

R_OVP> 10 kΩ (V_OVPis 44 V typical)

–

OVP

PAD

Exposed thermal pad, common star ground for PGND, DGND, LGND, and AGND; connect to copper

plane of the application PCB for heat transfer

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

1 2 345 6 7...17

中文翻译

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