WMSIC Electronic Components

Silergy SY7711ABC

ModelSY7711ABC
PackageSOT23-6
BrandSILERGY
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

19 specifications

Core information

Product name
silergy SY7711ABC
Type
SILERGY
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SILERGY
Electronic Component
SY7711ABC
Electronic Component
1
Package
SOT23-6
Electronic Component
LEDDriver
Electronic Component
PWM; Analog
Electronic Component
0.041g
Electronic Component
1
Features
(OVP); LED; (OTP); (SCP)
Electronic Component
BM0225123810
Operating Temperature
40℃~+85℃
Switching Frequency
120kHz
Electronic Component
Electronic Component
Operating Voltage(DC)
5V~28V
Electronic Component
Electronic Component

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

SY7711ABC 概述

一、产品简介

SY7711ABC 是矽力杰(silergy)推出的一款单通道升压型 LED 驱动器,采用 SOT23-6 封装。器件工作电压范围宽(5V~28V),开关频率固定为 120kHz,支持 PWM 调光与模拟(电压)调光;并内置过流保护(OCP)、过压保护(OVP)与过温保护(OTP),适合汽车内饰、工矿照明、背光及各类单串 LED 应用。

二、功能与优势

  • 宽输入电压:5V~28V,适应多种电源环境,兼容汽车与工业供电。
  • 升压拓扑:支持在输入电压低于 LED 串总压时驱动多颗串联 LED。
  • 双模调光:PWM 调光响应快且具高对比度,模拟调光便于与模拟控制信号直接接口。
  • 保护完备:集成 OCP/OVP/OTP 提高可靠性,简化外围电路设计。
  • 小体积封装:SOT23-6,便于空间受限的应用与批量装板。

三、典型应用场景

  • 汽车仪表、阅读灯、车内氛围灯
  • 工业设备指示与背光系统
  • 手电与便携灯具
  • 商用照明与轨道灯(单通道恒流驱动需求)

四、外围元件与设计要点

  • 电感选择:因开关频率为 120kHz,电感值通常取决于输出电流与允许纹波,常见范围为几μH 至数十μH;需选用低 DCR、能承受峰值电流的功率电感。
  • 整流二极管:建议选用低正向压降、快速恢复或肖特基二极管以降低损耗并提升效率。
  • 输出与输入电容:使用低 ESR 的陶瓷电容以抑制电压纹波并增强稳定性;输入侧需加足够去耦以防回路振荡。
  • 电流检测:恒流通过外接取样电阻(Rsense)设定,取样布局需靠近芯片以保证准确测量。
  • 调光接口:PWM 调光端应保证清晰的占空比信号及适宜频率;模拟调光端允许通过直流电压调整输出电流。

五、保护与热管理

SY7711ABC 内置 OCP/OVP/OTP,可在异常工况下保护器件与负载。实际应用中应:

  • 做好 PCB 散热与铺铜,SOT23-6 封装热阻限制功率耗散;
  • 确保工作时器件结温在器件允许范围内(-40℃~+85℃ 环境温度下的安全余量);
  • 在高环境温或高输出电流场景下评估降额使用或外加散热增强。

六、布局与 EMC 建议

  • 开关节点(LX)走线最短最粗以降低 EMI;
  • 电感、肖特基二极管与 MOSFET 或转换节点紧密布局;
  • 输入和输出电容靠近器件引脚放置,地回流路径要短且连通良好;
  • 若有严格 EMC 要求,可在开关节点加 RC 滤波或在输入端加共模滤波器。

七、总结

SY7711ABC 提供了小封装、宽电压、完备保护与双模调光的升压恒流解决方案,适合对体积、可靠性与调光性能均有要求的单通道 LED 应用。在设计时合理选择电感、肖特基二极管与取样电阻,并优化 PCB 布局与散热,可获得稳定且高效的工作表现。若需更详细的电气参数与典型应用电路,请参考器件数据手册。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

Product sourcing intelligence

Model, package, availability, and BOM fit reviewed before quotation.

WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

Sourcing availability signal

Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.

Buyer sourcing scenarios

Examples of how common component sourcing requests are organized.

Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.

The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.