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Silergy SY8308RBC
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- silergy SY8308RBC
- Type
- SILERGY
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SILERGY
- Electronic Component
- SY8308RBC
- Electronic Component
- 1
- Package
- QFN-20
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.088g
- Electronic Component
- 1
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0000744495
- Operating Temperature
- 40℃~+125℃
- Operating Voltage
- 4V~40V
- Switching Frequency
- 350kHz；500kHz
- Electronic Component
- Electronic Component
- Output Current
- 8A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SY8308RBC 产品概述
SY8308RBC 是矽力杰（Silergy）推出的一款高效率、可调输出的同步降压稳压器，单通道输出，内置开关管，能够在宽输入电压范围内稳定提供高达 8A 的输出电流。器件采用 QFN-20 封装，适合空间受限但需高功率密度的应用场景。其典型描述为 “High Efficiency, 8.0A 40V Input Synchronous Step Down”。
一、主要规格亮点
- 输入电压范围：4V ～ 40V，适应 12V/24V/36V 等多种系统电压。
- 输出类型：可调输出，方便通过外部电阻设置目标电压。
- 拓扑结构：同步降压（Buck），内置高边/低边开关管，减少外部组件。
- 最大输出电流：8A，适合中大功率负载。
- 静态电流（Iq）：约 60μA，有利于低功耗/待机应用。
- 开关频率：支持 350kHz 与 500kHz 两档，设计灵活以权衡效率与器件体积。
- 封装：QFN-20，有利于散热与 PCB 布局。
二、性能与优势
- 高效率：同步整流结构在中高负载下能显著减少导通损耗，提升系统总体效率。
- 宽输入容限：4–40V 的输入范围使器件适合多种工业、电信及宽电压平台，具备良好的适配性。
- 低静态电流：60μA 的静态电流在轻载或待机模式下能降低系统静态功耗，延长电源待机时间。
- 可切换的开关频率：350kHz 可降低开关损耗、提高效率；500kHz 可使用更小的电感与电容，减小总体方案体积。
三、典型应用场景
- 工业控制与自动化设备电源
- 网络通信、基站与路由设备的局部供电
- 车载电子（需注意车规认证需求）
- 嵌入式系统与便携式设备的主降压或点位电源
四、设计注意事项（建议）
- 电感选型：选择饱和电流 > 输出电流的电感（建议 >8A 余量），低 DCR 有助于提高效率。
- 输出电容：采用低 ESR 的固态或陶瓷电容以降低纹波并提高瞬态响应。
- 输入去耦：在 VIN 与 GND 端口靠近芯片放置足够的去耦电容，抑制输入尖峰与振铃。
- PCB 布局：QFN-20 封装需良好散热，建议为热垫开铜且多层过孔接地，电流回流路径要短且宽。
- 开关频率选择：根据成本与体积权衡，频率高可减小外部元件体积，但会增加开关损耗与 EMI。
- 热管理：高负载下注意芯片结温，必要时增加铜厚或散热片。
五、封装与评价
QFN-20 封装在保证功率密度的同时便于散热处理，适合自动化 SMT 生产。总体来看，SY8308RBC 以其宽输入范围、高输出电流、低待机功耗和可选开关频率，为需要高效稳压且空间受限的系统提供了实用的降压解决方案。
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