WMSIC Electronic Components

ADI/LINEAR MAX7221CWG+T MAX7221CWG

ModelMAX7221CWG+T
PackageSOIC-24-300mil
BrandADI/LINEAR
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

18 specifications

Core information

Product name
ADI(Analog Devices) / LINEAR MAX7221CWG+T
Type
ADI/LINEAR
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ADI(Analog Devices) / LINEAR
Electronic Component
MAX7221CWG+T
Electronic Component
1
Package
SOIC-24-300mil
Electronic Component
LED Segment Display Driver
Electronic Component
1.004g
Electronic Component
1
Features
PWM; Display; BCD; Built-in Display RAM
Electronic Component
BM0264545391
Operating Temperature
0℃~+70℃
Operating Voltage
4V~5.5V
Interface Type
4 Interface
Electronic Component
Electronic Component
Electronic Component
1000

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

MAX7221CWG+T 产品概述

一、产品简介

MAX7221CWG+T 是 ADI/LINEAR(原 Maxim)推出的一款高集成度发光二极管驱动器,封装为 SOIC-24(300 mil),工作电压范围 4.0V 至 5.5V,工作温度为 0℃ 至 +70℃。器件通过 4 线串行接口与微控制器通信,内部集成显示 RAM 和多项易用功能,适合数码管和矩阵 LED 的驱动与显示管理。

二、主要功能与特点

  • 4 线串行接口(DIN/CLK/LOAD/…),支持级联扩展,单线控制多芯片级联显示。
  • 内置显示 RAM,可保存 8 位数字/64 个段的显示数据,减轻主控刷新负担。
  • BCD 解码与锁存功能,支持标准数字的快速显示和字符译码。
  • 可编程 PWM 调光(多级亮度控制),实现平滑亮度调节与省电。
  • 上电消隐(Power-on blanking)与灯测试(Lamp Test),方便初始化与调试。
  • 可通过外部电阻设定段电流,保证恒流驱动与亮度一致性。

三、关键参数

  • 接口类型:4 线串行接口,级联支持。
  • 工作电压:4.0V ~ 5.5V。
  • 工作温度:0℃ ~ +70℃(商用级)。
  • 封装:SOIC-24-300 mil(MAX7221CWG+T)。
  • 功能特性:内部显示 RAM、BCD 输入锁存、PWM 调光、上电消隐、灯测试等。

四、典型应用

  • 工业与消费类数码管显示(仪表盘、操作面板)。
  • 状态指示与计数器、时钟、温控器等家电或工业控制面板。
  • LED 点阵/矩阵显示与广告屏小模块。
  • 任何需要减少 MCU I/O、简化多段驱动与统一亮度控制的场合。

五、设计要点与建议

  • 使用外部 RSET 设定段电流时,根据 LED 亮度与热设计选择合适阻值并留足散热裕度。
  • 多片级联时注意 LOAD/CS 控制时序与总线驱动能力,必要时在链路上加入缓冲。
  • 上电消隐与灯测试功能可用于系统自检与防抖启动,调试阶段建议开启灯测试以核查连线完整性。
  • 在 5V 系统中搭配常用 MCU 直接驱动,若 MCU 工作电压较低则需注意接口电平兼容或加速平移。

总结:MAX7221CWG+T 将多位数码显示控制、亮度管理与自检功能高度集成,适合需要低引脚占用、稳定恒流驱动及易用显示管理的 LED 显示设计。

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