WMSIC Electronic Components

LOWPOWER LP3350SOF

ModelLP3350SOF
PackageSOP-8
BrandLOWPOWER
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LOWPOWER LP3350SOF
Type
LOWPOWER
Minimum package
4000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LOWPOWER
Electronic Component
LP3350SOF
Electronic Component
1
Package
SOP-8
Electronic Component
LEDDriver
Electronic Component
PWM
Electronic Component
0.1g
Electronic Component
1
Channel Count
1
Features
(OVP); Built-in; (OTP); (SCP)
Electronic Component
BM0229362028
Operating Temperature
40℃~+85℃
Switching Frequency
175kHz~225kHz
Electronic Component
Electronic Component
Operating Voltage(DC)
8V~28V

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

LP3350SOF 产品概述

一、产品简介

LP3350SOF 是微源半导体(LOWPOWER)推出的一款高集成度升压型单通道 LED 驱动控制器,封装为 SOP-8。器件适用于输入电压范围宽、需外置开关管的场合,针对车载及工业级照明设计,工作温度覆盖 -40℃ 至 +85℃,兼顾可靠性与耐用性。

二、主要特性

  • 输入电压:DC 8V ~ 28V,支持宽电压总线应用。
  • 拓扑结构:升压(Boost),需配合外置功率开关管(MOSFET)。
  • 开关频率:典型工作在 175kHz ~ 225kHz 范围内,可在效率与 EMI 之间取得平衡。
  • 通道数:1 路,适合单路高亮 LED 或串联灯组驱动。
  • 调光方式:PWM 调光,适配微控制器或车载 PWM 信号直接控制亮度。
  • 封装:SOP-8,便于手工焊接与批量生产装配。

三、保护与可靠性

LP3350SOF 集成多重保护机制:过流保护(OCP)、过温保护(OTP)、过压保护(OVP)与欠压保护(UVP)。这些保护确保异常工况下器件安全关闭或限制功率输出,保护外置开关管与负载,提高系统可靠性,尤其适合车载和工业环境。

四、典型应用场景

  • 汽车日间行车灯、尾灯及转向灯驱动。
  • 工业与商业照明模块、标识牌背光驱动。
  • 便携/固定式高功率 LED 应用,需要高效率升压和 PWM 调光场景。

五、设计要点与建议

  • 外置开关管建议选用低 Rds(on)、耐压大于等于输入最大电压并具备良好开关特性的 MOSFET,以降低开关损耗与热耗散。
  • 电感与续流二极管需根据输出电流、开关频率和纹波要求合理选型,关注饱和电流与热性能。
  • 布局上将器件的高电流回路(MOSFET、电感、二极管、电容)尽量缩短并安放于同一平面,减少环路面积以降低 EMI。
  • 热管理:SOP-8 封装热阻相对较大,重载条件下需考虑散热片或铺铜以保证 OTP 不触发。
  • 调光接口应采用清晰的 PWM 信号,避免在高频开关频率与 PWM 频率产生相互干扰。

六、总结

LP3350SOF 是一款面向高可靠性应用的单通道升压 LED 驱动控制器,具备全面的硬件保护与工业级工作温度范围,适配宽输入电压并支持 PWM 调光。通过合理选择外置开关管与被动元件、良好的 PCB 布局与热设计,可在汽车及工业照明领域实现高效、稳定的 LED 驱动解决方案。

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