string(2958) "* Trying 220.181.175.236:443... * Connected to item.szlcsc.com (220.181.175.236) port 443 (#0) * ALPN, offering http/1.1 * successfully set certificate verify locations: * CAfile: /etc/ssl/certs/ca-certificates.crt * CApath: none * SSL connection using TLSv1.3 / TLS_AES_128_GCM_SHA256 * ALPN, server accepted to use http/1.1 * Server certificate: * subject: CN=*.szlcsc.com * start date: Jan 26 00:00:00 2026 GMT * expire date: Feb 24 23:59:59 2027 GMT * issuer: C=GB; O=Sectigo Limited; CN=Sectigo Public Server Authentication CA DV R36 * SSL certificate verify ok. > GET /item/231391.html HTTP/1.1 Host: item.szlcsc.com User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:135.0) Gecko/20100101 Firefox/135.0 * old SSL session ID is stale, removing * Mark bundle as not supporting multiuse < HTTP/1.1 301 Moved Permanently < Server: Tengine < Content-Length: 0 < Connection: keep-alive < Date: Thu, 05 Feb 2026 07:52:55 GMT < Set-Cookie: acw_tc=76b20fe017702779755502086e087a6739e8ea2f0e5475f7b5f928c368d9b6;path=/;HttpOnly;Max-Age=1800 < from: spg < Location: https://item.szlcsc.com/231391.html < J-Trace-ID: 9cc8cff3967c49b18bca5f2c848d1a37 < Via: cache6.l2cn8000[163,162,301-0,M], cache2.l2cn8000[164,0], cache19.cn7954[194,193,301-0,M], cache24.cn7954[201,0] < Ali-Swift-Global-Savetime: 1770277975 < X-Cache: MISS TCP_MISS dirn:-2:-2 < X-Swift-SaveTime: Thu, 05 Feb 2026 07:52:55 GMT < X-Swift-CacheTime: 0 < Timing-Allow-Origin: * < EagleId: dcb5af2c17702779755176647e < * Connection #0 to host item.szlcsc.com left intact * Found bundle for host item.szlcsc.com: 0x598111606aa0 [serially] * Re-using existing connection! (#0) with host item.szlcsc.com * Connected to item.szlcsc.com (220.181.175.236) port 443 (#0) > GET /231391.html HTTP/1.1 Host: item.szlcsc.com User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:135.0) Gecko/20100101 Firefox/135.0 * Mark bundle as not supporting multiuse < HTTP/1.1 200 OK < Server: Tengine < Content-Type: text/html; charset=utf-8 < Transfer-Encoding: chunked < Connection: keep-alive < Date: Thu, 05 Feb 2026 07:52:56 GMT < Set-Cookie: acw_tc=76b20f7917702779758658316ee93f37edc2bcb1a9c146910f8b605fb2e723;path=/;HttpOnly;Max-Age=1800 < Vary: Accept-Encoding < from: spg < Cross-Origin-Opener-Policy: same-origin < Cross-Origin-Embedder-Policy: same-origin < x-device-type: desktop < Cache-Control: public, must-revalidate < X-Powered-By: Next.js < ETag: "11k0nzj06wt2cbt" < Vary: Accept-Encoding < J-Trace-ID: 0e1f348a359e4a4681c947e5b601b880 < Via: cache41.l2cn8000[290,290,200-0,M], cache7.l2cn8000[292,0], cache5.cn7954[425,425,200-0,M], cache24.cn7954[427,0] < Ali-Swift-Global-Savetime: 1770277976 < X-Cache: MISS TCP_MISS dirn:-2:-2 < X-Swift-SaveTime: Thu, 05 Feb 2026 07:52:56 GMT < X-Swift-CacheTime: 10800 < Timing-Allow-Origin: * < EagleId: dcb5af2c17702779757237976e < * Connection #0 to host item.szlcsc.com left intact " UC3843BVD1R2G中文资料_最新报价_数据手册下载_onsemi(安森美)-AC-DC控制器和稳压器-立创商城
我的订单购物车(0)联系客服帮助中心供应商合作嘉立创产业服务群
领券中心备货找料立推专区爆款推荐合作库存PLUS会员BOM配单PCB/SMT工业品面板定制
UC3843BVD1R2G实物图
  • UC3843BVD1R2G商品缩略图
  • UC3843BVD1R2G商品缩略图
  • UC3843BVD1R2G商品缩略图

温馨提醒:图片仅供参考,商品以实物为准

UC3843BVD1R2G

7.6V~30V

SMT扩展库SMT补贴嘉立创PCB免费打样
私有库下单最高享92折
描述
UC3842B、UC3843B 系列为高性能固定频率电流模式控制器。此类器件专门针对离线和 DC-DC 转换器应用而设计,为设计人员提供了外部部件极少的成本高效方案。这些集成电路具有实现精确占空比控制的微调振荡器、温度补偿参考、高增益误差放大器、电流传感比较器和高电流图腾柱输出,适用于驱动功率 MOSFET。还包括了保护功能,包括输入和参考欠压锁定且全部带有迟滞、按周期电流限制、可编程输出停滞时间和用于单脉冲计量的锁存。此类器件采用 8 引脚双列直插和表面贴装 (SO-8) 塑料封装以及 14 引脚塑料表面贴装 (SO-14) 封装。SO-14 封装具有单独的电源和接地引脚用于图腾柱输出级。UCX842B 的 UVLO 阈值为 16 V(开)和 10 V(关),适用于离线转换器。UCX843B 针对 UVLO 阈值为 8.5 V(开)和 7.6 V(关)的低电压阈值而量身定制。
品牌名称
onsemi(安森美)
商品型号
UC3843BVD1R2G
商品编号
C231572
商品封装
SOIC-8​
包装方式
编带
商品毛重
0.207克(g)

商品参数

属性参数值
商品目录AC-DC控制器和稳压器
是否隔离隔离
工作电压7.6V~30V
开关频率500kHz
耗散功率(Pd)702mW
属性参数值
最大占空比96%
拓扑结构反激式;升压式
特性欠压保护(UVP);过流保护(OCP)
工作温度-40℃~+105℃@(TA)
反馈方式原边反馈

商品概述

UC3842B、UC3843B系列是高性能固定频率电流模式控制器。它们专为离线和DC - DC转换器应用而设计,为设计人员提供了一种使用最少外部元件的经济高效解决方案。这些集成电路具有经过微调的振荡器,可实现精确的占空比控制、温度补偿基准、高增益误差放大器、电流检测比较器,以及非常适合驱动功率MOSFET的大电流图腾柱输出。 还包括保护功能,如带迟滞的输入和基准欠压锁定、逐周期电流限制、可编程输出死区时间,以及用于单脉冲计量的锁存器。 这些器件有8引脚双列直插式和表面贴装(SOIC - 8)塑料封装,以及14引脚塑料表面贴装(SOIC - 14)封装。SOIC - 14封装为图腾柱输出级提供了独立的电源和接地引脚。 UCX842B的欠压锁定(UVLO)阈值为16 V(开启)和10 V(关闭),非常适合离线转换器。UCX843B针对低电压应用进行了优化,其UVLO阈值为8.5 V(开启)和7.6 V(关闭)。

商品特性

-用于精确频率控制的微调振荡器 -振荡器频率保证为250 kHz -高达500 kHz的电流模式操作 -自动前馈补偿 -用于逐周期电流限制的锁存式PWM -带欠压锁定的内部微调基准 -大电流图腾柱输出 -带迟滞的欠压锁定 -低启动和工作电流 -这是一款无铅和无卤化物器件

数据手册PDF

string(1479) "* Trying 220.181.175.235:443... * Connected to so.szlcsc.com (220.181.175.235) port 443 (#0) * ALPN, offering http/1.1 * successfully set certificate verify locations: * CAfile: /etc/ssl/certs/ca-certificates.crt * CApath: none * SSL connection using TLSv1.3 / TLS_AES_128_GCM_SHA256 * ALPN, server accepted to use http/1.1 * Server certificate: * subject: CN=*.szlcsc.com * start date: Jan 26 00:00:00 2026 GMT * expire date: Feb 24 23:59:59 2027 GMT * issuer: C=GB; O=Sectigo Limited; CN=Sectigo Public Server Authentication CA DV R36 * SSL certificate verify ok. > POST /search HTTP/1.1 Host: so.szlcsc.com Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:135.0) Gecko/20100101 Firefox/135.0 Content-Length: 9 * upload completely sent off: 9 out of 9 bytes * old SSL session ID is stale, removing * Mark bundle as not supporting multiuse < HTTP/1.1 405 Not Allowed < Server: Tengine < Content-Type: text/html; charset=utf-8 < Content-Length: 2657 < Connection: keep-alive < Date: Thu, 05 Feb 2026 07:52:56 GMT < Set-Cookie: acw_tc=76b20fe117702779763213399e192694299ed9547198ed651628544f178621;path=/;HttpOnly;Max-Age=1800 < Cache-Control: no-cache, no-store < Pragma: no-cache < x-alicdn-da-ups-status: endOs,0,405 < Via: ens-cache68.l2eo166-18[31,0], cache32.cn7954[72,0] < Timing-Allow-Origin: * < EagleId: dcb5af3e17702779762616768e < * Connection #0 to host so.szlcsc.com left intact " 405
string(1479) "* Trying 220.181.175.239:443... * Connected to so.szlcsc.com (220.181.175.239) port 443 (#0) * ALPN, offering http/1.1 * successfully set certificate verify locations: * CAfile: /etc/ssl/certs/ca-certificates.crt * CApath: none * SSL connection using TLSv1.3 / TLS_AES_128_GCM_SHA256 * ALPN, server accepted to use http/1.1 * Server certificate: * subject: CN=*.szlcsc.com * start date: Jan 26 00:00:00 2026 GMT * expire date: Feb 24 23:59:59 2027 GMT * issuer: C=GB; O=Sectigo Limited; CN=Sectigo Public Server Authentication CA DV R36 * SSL certificate verify ok. > POST /search HTTP/1.1 Host: so.szlcsc.com Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:135.0) Gecko/20100101 Firefox/135.0 Content-Length: 9 * upload completely sent off: 9 out of 9 bytes * old SSL session ID is stale, removing * Mark bundle as not supporting multiuse < HTTP/1.1 405 Not Allowed < Server: Tengine < Content-Type: text/html; charset=utf-8 < Content-Length: 2657 < Connection: keep-alive < Date: Thu, 05 Feb 2026 07:52:56 GMT < Set-Cookie: acw_tc=781bad3d17702779764115401e0cd084cdcd1017a2c69899444791c5143a26;path=/;HttpOnly;Max-Age=1800 < Cache-Control: no-cache, no-store < Pragma: no-cache < x-alicdn-da-ups-status: endOs,0,405 < Via: ens-cache37.l2eo166-18[28,0], cache32.cn7954[58,0] < Timing-Allow-Origin: * < EagleId: dcb5af3e17702779763697396e < * Connection #0 to host so.szlcsc.com left intact " 405
string(1479) "* Trying 220.181.175.238:443... * Connected to so.szlcsc.com (220.181.175.238) port 443 (#0) * ALPN, offering http/1.1 * successfully set certificate verify locations: * CAfile: /etc/ssl/certs/ca-certificates.crt * CApath: none * SSL connection using TLSv1.3 / TLS_AES_128_GCM_SHA256 * ALPN, server accepted to use http/1.1 * Server certificate: * subject: CN=*.szlcsc.com * start date: Jan 26 00:00:00 2026 GMT * expire date: Feb 24 23:59:59 2027 GMT * issuer: C=GB; O=Sectigo Limited; CN=Sectigo Public Server Authentication CA DV R36 * SSL certificate verify ok. > POST /search HTTP/1.1 Host: so.szlcsc.com Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:135.0) Gecko/20100101 Firefox/135.0 Content-Length: 9 * upload completely sent off: 9 out of 9 bytes * old SSL session ID is stale, removing * Mark bundle as not supporting multiuse < HTTP/1.1 405 Not Allowed < Server: Tengine < Content-Type: text/html; charset=utf-8 < Content-Length: 2657 < Connection: keep-alive < Date: Thu, 05 Feb 2026 07:52:56 GMT < Set-Cookie: acw_tc=2f61f26617702779764926040e08474bb5a2626a8a80129adad5c5a1284adf;path=/;HttpOnly;Max-Age=1800 < Cache-Control: no-cache, no-store < Pragma: no-cache < x-alicdn-da-ups-status: endOs,0,405 < Via: ens-cache10.l2eo166-18[30,0], cache23.cn7954[57,0] < Timing-Allow-Origin: * < EagleId: dcb5af2b17702779764492693e < * Connection #0 to host so.szlcsc.com left intact " 405
string(1666) "* Trying 111.48.137.146:443... * Connected to www.jlc-smt.com (111.48.137.146) port 443 (#0) * ALPN, offering http/1.1 * successfully set certificate verify locations: * CAfile: /etc/ssl/certs/ca-certificates.crt * CApath: none * SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384 * ALPN, server accepted to use http/1.1 * Server certificate: * subject: CN=*.jlc-smt.com * start date: Dec 29 00:00:00 2025 GMT * expire date: Jan 16 23:59:59 2027 GMT * issuer: C=GB; O=Sectigo Limited; CN=Sectigo Public Server Authentication CA DV R36 * SSL certificate verify ok. > GET /lcsc/detail/C231572.html HTTP/1.1 Host: www.jlc-smt.com User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:135.0) Gecko/20100101 Firefox/135.0 * old SSL session ID is stale, removing * Mark bundle as not supporting multiuse < HTTP/1.1 200 OK < Server: volc-dcdn < Content-Type: text/html; charset=utf-8 < Content-Length: 89344 < Connection: keep-alive < Date: Thu, 05 Feb 2026 07:52:56 GMT < Set-Cookie: acw_tc=784e2cb517702779765904569e1e360e319e948c959f6bb6ff74000b2967f9;path=/;HttpOnly;Max-Age=1800 < Vary: Accept-Encoding < X-Powered-By: Next.js < ETag: "5i97y3co1r1ugo" < Vary: Accept-Encoding < J-Trace-ID: c90b42b1e8414445b1c75439ff04aa89 < Cache-Control: no-store < Vary: Accept-Encoding < via: n172-138-030.hbwhmp03-agg.ToB,n111-048-137-138.bdcdn-whcm03.ToB < x-request-ip: 39.107.68.107 < x-tt-trace-tag: id=5 < x-dsa-trace-id: 1770277976e46304500ccbdb2b567bafd6aad701c4 < X-Dsa-Origin-Status: 200 < server-timing: cdn-cache;desc=MISS, origin;dur=356, edge;dur=1, cdn-cache;desc=MISS < * Connection #0 to host www.jlc-smt.com left intact " UC3843BVD1R2G_onsemi(安森美)_UC3843BVD1R2G中文资料_PDF手册_价格
7.6V~30V实物图
7.6V~30V缩略图
7.6V~30V缩略图
7.6V~30V缩略图
温馨提示:图片仅供参考,商品以实物为准

7.6V~30V

扩展库
品牌名称
onsemi(安森美)
厂家型号
UC3843BVD1R2G
商品编号
C231572
商品封装
SOIC-8
商品毛重
0.000207千克(kg)
包装方式
编带
ECCN
EAR99

商品参数

功能类型:升压型,功能类型:升降压型,占空比(最大值):96%,反馈方式:原边反馈,同步整流:否,工作温度:-40℃~+105℃@(TA),工作温度:-40℃~+105℃@(TA),工作电压:7.6V~30V,开关频率:500kHz,开关频率:500kHz,拓扑结构:升压式,拓扑结构:反激式,拓扑结构:升压式,拓扑结构:反激式,是否隔离:隔离,最大占空比:96%,特性:欠压保护(UVP),特性:过流保护(OCP),耗散功率(Pd):702mW,输入电压:7.6V~30V,输出电流(最大值):1A,输出通道数:1

找到类似商品:0查看类似商品
属性参数值其他
商品目录DC-DC控制芯片
功能类型升压型
功能类型升降压型
占空比(最大值)96%
反馈方式原边反馈
同步整流
工作温度-40℃~+105℃@(TA)
工作温度-40℃~+105℃@(TA)
工作电压7.6V~30V
开关频率500kHz
开关频率500kHz
拓扑结构升压式
拓扑结构反激式
拓扑结构升压式
拓扑结构反激式
是否隔离隔离
最大占空比96%
特性欠压保护(UVP)
特性过流保护(OCP)
耗散功率(Pd)702mW
输入电压7.6V~30V
输出电流(最大值)1A
输出通道数1

数据手册PDF

放大查看

无法嵌入内容,点击此处查看

阶梯价格(含税价)

梯度售价
1+¥2.589/个
50+¥2.0069/个
150+¥1.757/个
500+¥1.446/个
2500+¥1.308/个
5000+¥1.224/个

嘉立创SMT补贴

整盘

单价

整盘单价¥1.20336

2500 PCS/盘

嘉立创补贴8%

一盘能省掉261.6

换料费券¥300

库存总量

5580 PCS
电话
顶部
元器件购物车
UC3843BVD1R2G 丝印详情 | 丝印反查搜索 - sa1tech
Check
key value
丝印
3843B
丝印
AKAJRV
型号 UC3843BVD1R2G
品牌 onsemi(安森美)
封装 SOIC-8_150mil
更多信息
信息来源 立创商城
华秋商城 最低1.4042元购买
立创商城 大约1.224元购买
数据手册 数据手册
相似产品 UC3843BD1013TR
相似产品 GD32F450VET6
支持我们 看看我司产品?
历史价格走势
立创商城
最低价: 1.0124元
2026-01-05 01:19:24
最高价: 1.224元
2026-01-23 18:10:25
平均价: 1.13元
华秋商城
最低价: 1.3567元
2026-01-05 01:19:24
最高价: 1.4042元
2026-01-06 15:18:00
平均价: 1.38元
2.737367s