Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
SILAN SD6835
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- SILAN SD6835
- Type
- SILAN
- Minimum package
- 2000 盒
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SILAN
- Electronic Component
- SD6835
- Electronic Component
- 1
- Package
- CDIP-8
- Electronic Component
- AC-DC Controllers and Regulators
- Electronic Component
- 0.76g
- Electronic Component
- 1
- Features
- (UVP); (OTP); (OVP); (OCP)
- Electronic Component
- Electronic Component
- Electronic Component
- BM0258715517
- Electronic Component
- PFM; PWM
- Operating Temperature
- 25℃~+85℃
- Operating Voltage
- 8.5V~28V
- Switching Frequency
- 25kHz~67kHz
- Isolation
- Isolated
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SD6835 产品概述
一、产品简介
SD6835 是士兰微（SILAN）推出的一款隔离型 AC-DC 控制器与稳压器，集成高压晶体管并支持副边反馈，适用于反激式与正激式开关电源。器件支持宽范围工作电压（8.5V28V），开关频率可在 25kHz67kHz 之间调节，最大占空比达 82%，能够在有限体积内实现高效率与可靠保护功能。
二、主要技术参数
- 隔离：具备初/次级隔离设计，配合副边反馈实现精确稳压。
- 工作电压（Vcc）：8.5V ~ 28V。
- 开关频率：25kHz ~ 67kHz（可调/受外部网络与工作条件影响）。
- 输出电流：最高可支持 7A（根据拓扑与散热条件）。
- 器件耗散功率（Pd）：6.3W（热设计依据）。
- 最大占空比：82%。
- 内置晶体管耐压：650V（适合直接承受高压开关应力）。
- 封装：CDIP-8。
- 工作温度：-25℃ ~ +85℃。
- 工作模式：支持 PFM 与 PWM 调制，便于在轻载和重载下切换优化效率与纹波。
三、功能与保护特性
SD6835 集成齐全保护与启动功能，提升系统可靠性：
- 欠压保护（UVP）：保证 Vcc 异常时安全关断或锁定重启。
- 过热保护（OTP）：温度过高时限制输出或断开开关。
- 过压保护（OVP）：防止输出侧或器件受高压冲击。
- 过流保护（OCP）：限制瞬态与持续过流，保护变压器和开关管。
- 软启动：限制启动浪涌电流，减少初始应力与电磁干扰。
四、拓扑与工作模式建议
适用于反激式与正激式两类拓扑，推荐在反激式小功率适配器和正激式中高功率设计中应用。PFM 模式适合轻载或 standby 场景以提高效率，PWM 模式用于恒定负载下保证稳压与低噪声。25kHz~67kHz 的频段在体积、效率与 EMI 之间取得折中，设计时根据散热与磁芯损耗选择合适频率。
五、应用领域
- 手机、平板与小功率适配器待机与主供电。
- LED 驱动与照明电源（需配合输出整流与限流方案）。
- 小型开关电源与充电器。
- 家电控制板、功率模块的隔离供电。
六、设计与注意事项
- 热管理：Pd 6.3W 要求合理散热与铜箔面积，CDIP-8 包装需注意封装热阻。
- 反馈方案：采用副边反馈实现高精度输出，注意光耦或 TL431 的带宽与稳定补偿。
- 浪涌与吸收：650V 开关耐压强，但仍建议合理设计 RC/吸收电路与变压器转移能量路径。
- EMI 与滤波：PFM 模式下轻载噪声需额外滤波与布局控制。
- 启动与软启动电路配合，避免启动时过大电流冲击。
SD6835 以其高耐压开关、丰富的保护机制与灵活的工作模式，适合追求稳定性与成本效益的隔离式开关电源设计。根据具体功率与散热条件，合理选择拓扑与外围器件，即可发挥其性能优势。
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.
