Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
XLSEMI XL9514
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- XLSEMI XL9514
- Type
- XLSEMI
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- XLSEMI
- Electronic Component
- XL9514
- Electronic Component
- 1
- Package
- TO-252
- Electronic Component
- LEDDriver
- Electronic Component
- PWM
- Electronic Component
- 0.396g
- Electronic Component
- 1
- Channel Count
- 1
- Features
- (OTP); (SCP)
- Electronic Component
- BM0264555988
- Operating Temperature
- 40℃~+125℃
- Switching Frequency
- 150kHz
- Electronic Component
- 4%
- 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.
XL9514 产品概述
一、产品简介
XL9514 是一款单通道降压型恒流 LED 驱动器，工作电压范围宽（DC 5V–45V），内置开关管，开关频率 150kHz，最大输出电流 4A，恒流精度 4%，支持 PWM 调光，并集成过温保护（OTP）和短路保护（SCP）。器件采用 TO-252（DPAK）封装，工作温度范围 -40℃ 至 +125℃，适用于汽车、工业及民用高亮度 LED 照明场合。
二、主要特性
- 宽输入电压：DC 5V–45V，适配 12V/24V/48V 等系统
- 单通道恒流输出：最大 4A，恒流精度 ±4%
- 降压（Buck）拓扑，内部集成开关管，简化外部元件
- 开关频率：150kHz（典型），在 EMI 与电感体积间取得平衡
- PWM 调光：支持占空比调光，便于实现亮度控制与 PWM/模拟接口兼容
- 保护功能：过温保护（OTP）与短路保护（SCP），提高系统可靠性
- 工业级温度范围与 TO-252 小型功率封装，便于散热与焊接
三、典型应用
- 汽车前照灯、日行灯、雾灯等 LED 驱动
- 商业/民用筒灯、射灯、轨道灯等恒流照明模块
- 标识、广告牌与通用高亮度 LED 照明单元
- 需要 PWM 调光与宽输入范围的电源管理场景
四、设计要点
- 电感：选择饱和电流高于器件峰值电流的功率电感，低 DCR 以降低损耗。电感值按 ΔI = Vin·D / (L·fs) 估算，保证工作方式（连续/不连续）符合设计要求。
- 整流/续流二极管：若为非同步方案，使用低正向压降、低反向恢复的肖特基二极管，额定电流 ≥ 4A。
- 输出电容：并联低 ESR 电解或固态电容与陶瓷电容以抑制纹波与瞬态。
- 电流采样：依据器件的电流设定架构选择合适的采样电阻并注意功率耗散（P = I^2·R）。
- PWM 调光：支持外部 PWM 直接调光，建议避免与开关频率产生明显拍频，常用 PWM 频率为数百 Hz 至数十 kHz 以消除可见闪烁。
- 热设计：TO-252 热阻较低，但仍建议在 PCB 上扩展散热铜箔并增加过孔以导出热量，保证结温不过热触发 OTP。
五、布局建议
- 将输入电容紧靠 VIN 与 GND 引脚布置，缩短信号环路面积；
- 开关节点（SW）走线尽量短且远离敏感模拟信号；
- 电流采样电阻靠近器件放置，保持测量精度；
- 提供充足的散热铜箔和必要的过孔，提升热导出能力。
六、总结
XL9514 以其宽输入范围、高达 4A 的恒流能力、内置开关管与完整保护功能，适合对体积、成本与可靠性有较高要求的 LED 驱动应用。结合合适的外部电感、整流器与散热设计，可构建高效、稳定的恒流照明解决方案。有关引脚定义、外部元件典型值与评估电路，请参照芯龙（XLSEMI）官方数据手册和参考设计。
Request for quote
Send RFQ
Use the form for single models, category sourcing, and multi-line BOM requirements.
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.
BOM matching & alternatives
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
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.
A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.
The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.
Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.
Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.
When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.
Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.
The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
Related products
Packaged components ready for RFQ.
