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图片源于供应商或网络,实物可能存在差异,请以实物为准

IS31AP4990D-UTLS2-TR

数量

单价

总价

¥ 3.470750

¥ 3.47075

10+

¥ 2.404734

¥ 24.04734

25+

¥ 2.141948

¥ 53.5487

100+

¥ 1.853546

¥ 185.3546

250+

¥ 1.715873

¥ 428.96825

500+

¥ 1.632575

¥ 816.2875

1000+

¥ 1.564234

¥ 1564.234

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购买数量

总价金额：￥ 3.47075

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样品申购

PDF描述：Audio Amplifier, 1.5W, 1 Channel(s), 1 Func, PBGA9, UTQFN-9L

产品概述

IS31AP4990D-UTLS2-TR 产品概述

一、产品简介

IS31AP4990D-UTLS2-TR 是来自 ISSI 的单声道音频功率放大器，面向便携与嵌入式音频应用。该器件在 8Ω 负载下可提供 1.2W 的输出功率，工作电压范围宽（2.7V～5.5V），工作温度范围为 -40℃～+85℃，封装为小尺寸 UTQFN-9 (1.5×1.5mm)，适合空间受限的电路板设计。

二、主要参数

声道数：单声道
输出功率：1.2W ×1 @ 8Ω
工作电压：2.7V ～ 5.5V
工作温度：-40℃ ～ +85℃
品牌：ISSI（美国芯成）
封装：UTQFN-9 (1.5×1.5mm)

三、关键应用场景

便携式音箱、蓝牙音箱（单声道模块或多个单元并联）
玩具、手持设备、电子报警器与提示音系统
低成本消费类电子、物联网终端的语音/提示输出

四、设计与使用建议

电源去耦：建议在 VCC 引脚附近放置 0.1μF 陶瓷去耦电容，再并联一只 4.7–10μF 的低 ESR 电容以稳定电源。
输出与扬声器：按规格匹配 8Ω 扬声器；若使用不同阻抗，应重新评估输出功率及热耗。
输入电路：如芯片内部非直流耦合，输入端可并用 0.01–0.1μF 耦合电容和适当的输入滤波阻容以抑制射频干扰。
布局：电源去耦电容应尽量靠近器件电源引脚放置，信号线短且粗，扬声器回路避免与敏感信号并行走线。

五、热管理与封装注意

UTQFN-9 小尺寸封装对热散发有限制。若在接近额定功率长期工作，应在 PCB 布局中：

在芯片底部和焊盘下设计足够的热焊盘并配合若干过孔导热至多层铜层；
保持周围无阻热器件，保证良好散热路径；
评估实际环境温度，必要时降低增益或使用节流策略以防热关断。

六、可靠性与保护建议

虽然很多功放带有内部保护（短路、过温、欠压），但在设计中仍建议增加外部限流、保险丝或合适的负载保护电路以提高可靠性；
做好电磁兼容（EMC）设计，避免扬声器线圈在 PCB 上形成干扰回路。

七、总结

IS31AP4990D-UTLS2-TR 以其小封装、宽电压和工业级温度范围，适合对空间、功耗和成本有严格要求的单声道音频应用。合理的电源去耦、PCB 布局与热管理是保证稳定输出与长期可靠性的关键。设计时请结合系统实际负载、供电及环境条件进行评估和验证。

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/www/wwwroot/www.ic72.com/app/model/Pdf.php ( 3.09 KB )
/www/wwwroot/www.ic72.com/vendor/topthink/think-orm/src/db/Raw.php ( 1.22 KB )
/www/wwwroot/www.ic72.com/vendor/topthink/think-view/src/Think.php ( 8.00 KB )
/www/wwwroot/www.ic72.com/vendor/topthink/think-template/src/Template.php ( 46.61 KB )
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/www/wwwroot/www.ic72.com/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
/www/wwwroot/www.ic72.com/runtime/temp/995a9576ac15c40d17b616c95da56580.php ( 75.72 KB )
/www/wwwroot/www.ic72.com/vendor/topthink/framework/src/think/Response.php ( 8.65 KB )
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CONNECT:[ UseTime:0.000774s ] mysql:host=127.0.0.1;port=3306;dbname=ic72com;charset=utf8
SHOW FULL COLUMNS FROM `visit_log` [ RunTime:0.001053s ]
INSERT INTO `visit_log` SET `ip` = '216.73.216.146' , `useragent` = 'Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)' , `reffer` = '' , `host` = 'https://www.ic118.com/stock/detail_63903338.html' [ RunTime:0.001713s ]
SHOW FULL COLUMNS FROM `product_type` [ RunTime:0.001678s ]
SELECT `id`,`typeid`,`name`,`typestr` FROM `product_type` WHERE `id` NOT IN (11,12,13,14,15) AND `id` <= 750 [ RunTime:0.000478s ]
SHOW FULL COLUMNS FROM `o_cart` [ RunTime:0.001368s ]
SELECT COUNT(*) AS think_count FROM `o_cart` WHERE ( `userId` = 0 AND `visitIP` = '216.73.216.146' ) [ RunTime:0.000248s ]
SHOW FULL COLUMNS FROM `ad` [ RunTime:0.001008s ]
SELECT * FROM `ad` WHERE `isDisplay` = 1 [ RunTime:0.000196s ]
SHOW FULL COLUMNS FROM `stock` [ RunTime:0.001220s ]
SELECT `s`.*,`u`.`company`,`t`.`name` FROM `stock` `s` LEFT JOIN `user` `u` ON `u`.`id`=`s`.`userid` LEFT JOIN `product_type` `t` ON `t`.`id`=`s`.`categoryid` WHERE `s`.`id` = '63903338' LIMIT 1 [ RunTime:0.007526s ]
SHOW FULL COLUMNS FROM `stock_pra` [ RunTime:0.002508s ]
SELECT * FROM `stock_pra` WHERE `stockid` = 63903338 [ RunTime:0.000586s ]
SHOW FULL COLUMNS FROM `stock_price` [ RunTime:0.004725s ]
SELECT * FROM `stock_price` WHERE `stockid` = 63903338 ORDER BY `minOrder` ASC [ RunTime:0.001116s ]
SHOW FULL COLUMNS FROM `stock_unitquantity` [ RunTime:0.003296s ]
SELECT * FROM `stock_unitquantity` WHERE `stockid` = 63903338 ORDER BY `unit` DESC [ RunTime:0.003210s ]
SHOW FULL COLUMNS FROM `stock_warehousequantity` [ RunTime:0.006284s ]
SELECT * FROM `stock_warehousequantity` WHERE `stockid` = 63903338 [ RunTime:0.009399s ]
SELECT `name` FROM `product_type` WHERE `id` = 0 LIMIT 1 [ RunTime:0.001936s ]
SELECT * FROM `stock_price` WHERE `stockid` = 63903338 ORDER BY `minOrder` ASC [ RunTime:0.000264s ]
CONNECT:[ UseTime:0.000683s ] mysql:host=127.0.0.1;port=3306;dbname=ic72com_pdf;charset=utf8
select * from pdf where partno='IS31AP4990D-UTLS2-TR' and brandshort='Lumissil Microsystems' limit 1 [ RunTime:0.001464s ]
SHOW FULL COLUMNS FROM `stock_product_overview` [ RunTime:0.002416s ]
SELECT `memo` FROM `stock_product_overview` WHERE `icName` = 'IS31AP4990D-UTLS2-TR' LIMIT 1 [ RunTime:0.003127s ]
SHOW FULL COLUMNS FROM `pdf` [ RunTime:0.003567s ]
SELECT `id`,`partno`,`note`,`note_cn` FROM `pdf` WHERE `partno` = 'IS31AP4990D-UTLS2-TR' LIMIT 1 [ RunTime:0.000850s ]
SHOW FULL COLUMNS FROM `stock_pra_lib` [ RunTime:0.002408s ]
SELECT `pra` FROM `stock_pra_lib` WHERE ( ( `partno` = 'IS31AP4990D-UTLS2-TR' OR `brand` LIKE 'Lumissil Microsystems%' ) ) LIMIT 1 [ RunTime:0.000957s ]
SELECT `id` FROM `stock` WHERE `id` <> 63903338 AND `partno` = 'IS31AP4990D-UTLS2-TR' AND `lockUser` = 0 AND ( LOWER(brand) LIKE '%lumissil microsystems%' ) [ RunTime:0.006431s ]
SHOW FULL COLUMNS FROM `icreplace` [ RunTime:0.002298s ]
SELECT `r`.*,`b`.`brandshort`,`b`.`brandcn` FROM `icreplace` `r` LEFT JOIN `stock_brand` `b` ON `b`.`id`=`r`.`icbrandid` WHERE `r`.`partno` = 'IS31AP4990D-UTLS2-TR' ORDER BY `r`.`id` DESC LIMIT 5 [ RunTime:0.000908s ]
SELECT `id`,`code`,`imgurl`,`minOrderPrice`,`partno`,`brand`,`package` FROM `stock` WHERE `categoryid` = 0 AND ( `partno` > 'IS31AP4990D-UTLS2-TR' ) ORDER BY `partno` ASC LIMIT 8 [ RunTime:0.013477s ]
SELECT `id`,`code`,`imgurl`,`minOrderPrice`,`partno`,`brand`,`package` FROM `stock` WHERE `status` = 3 ORDER BY `partno` ASC LIMIT 8 [ RunTime:0.000634s ]

0.291691s

IS31AP4990D-UTLS2-TR

购买数量

总价金额： ￥ 3.47075

推荐替代

PDF描述：Audio Amplifier, 1.5W, 1 Channel(s), 1 Func, PBGA9, UTQFN-9L

产品概述

IS31AP4990D-UTLS2-TR 产品概述

一、产品简介

二、主要参数

三、关键应用场景

四、设计与使用建议

五、热管理与封装注意

六、可靠性与保护建议

七、总结

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总价金额：￥ 3.47075