WMSIC Electronic Components

Chilisin LVF303015-4R7M-N LVF303015

ModelLVF303015-4R7M-N
PackageSMD
Brandchilisin
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
chilisin LVF303015-4R7M-N
Type
CHILISIN
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CHILISIN
Electronic Component
LVF303015-4R7M-N
Electronic Component
1
Package
SMD
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.063g
Inductor
4.7uH
Electronic Component
1
Electronic Component
BM0264815340
Current
1.36A
Resistor(DCR)
221mΩ
Electronic Component
Electronic Component
Electronic Component
2000

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

LVF303015-4R7M-N 产品概述

一、产品简介

LVF303015-4R7M-N 是奇力新(chilisin)推出的一款磁胶屏蔽型功率贴片电感,面向小型化开关电源与电源滤波场景。器件以紧凑的 SMD 封装(规格系列 3.0×3.0mm,厚度约 1.5mm)实现磁场屏蔽与稳定的电感特性,适合体积受限的电源模块设计。

二、主要参数

  • 标称电感:4.7 µH
  • 公差:±20%
  • 额定电流(Irated):1.36 A
  • 饱和电流(Isat):1.42 A(定义通常为电感下降一定比例时)
  • 直流电阻(DCR):221 mΩ
  • 类型:磁胶屏蔽功率电感(SMD)
  • 品牌:chilisin(奇力新)

三、性能特点

  • 小尺寸、高密度:3×3mm 紧凑封装,适用于空间受限的电源板设计。
  • 屏蔽结构:磁胶/屏蔽设计减少对周边元件的磁耦合与电磁干扰(EMI)。
  • 适合低功率电源:额定电流约 1.36 A,适合 1A 量级的降压/升压应用。
  • 注意功耗:在额定电流下的铜损约为 I^2·R ≈ 1.36^2 × 0.221 Ω ≈ 0.41 W,须在热设计中考虑功耗散热。

四、典型应用场景

  • 小功率 DC-DC 降压/升压模块(例如便携设备电源、板载转换器)
  • 输入/输出滤波与电源去耦,降低高频噪声
  • LED 驱动与电池管理系统(小电流场合)
  • 对 EMI 敏感的电路板局部磁场抑制

五、设计与布局建议

  • 留有电流裕量:由于 Isat 仅略高于额定电流,建议在实际设计中为电感留出一定的电流冗余(一般选择工作电流低于 Irated 的 80–90%),以避免直流偏置导致电感下降或饱和。
  • 考虑发热与散热:DCR 较高时会产生明显发热,需评估 PCB 铜箔面积、过孔及周围元件对热的影响,必要时增大散热铜箔或添加散热过孔。
  • 布线与接地:电感两端走短且粗的走线以减小额外电阻和寄生电感;输入侧接近整流/开关管,输出侧靠近负载。屏蔽封装可降低干扰,但仍建议与敏感模拟信号保持一定距离。
  • 焊接工艺:按常规 SMD 回流焊工艺处理,注意对应的回流温度曲线与焊盘设计以保证焊点质量。

六、选型提醒与替代方案

  • 若系统要求更高效率或更大通过电流,应选用 DCR 更低、Isat 明显大于工作电流的电感型号;或选择更大封装的功率电感。
  • 对电感精度敏感的滤波电路需注意 ±20% 的公差可能带来的频率偏移,必要时可通过仿真与样机验证最终滤波效果。

七、采购与可靠性建议

  • 选购时确认批次规格与 RoHS 等环保合规信息,向供应商索取样片做电流-电感特性及温升测试。
  • 在量产前进行全工况验证(包含温度、振荡波形和长时间运转测试),确保电感在实际工况下不会进入磁饱和或过热。

总结:LVF303015-4R7M-N 适合体积受限且对 EMI 有一定要求的小功率电源应用,设计时需关注其较高的 DCR 和较小的电流裕度,合理选型与热管理能确保稳定可靠的工作表现。

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