WMSIC Electronic Components

LITEON LTV-356T-A

ModelLTV-356T-A
Package4-SOP
BrandLITEON
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 Date code within 2 years

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
LITEON LTV-356T-A
Type
LITEON
Unit
Electronic Component
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
LITEON
Electronic Component
LTV-356T-A
Electronic Component
1
Package
4-SOP
Electronic Component
Transistor Output Optocoupler
Electronic Component
1g
Electronic Component
1
Electronic Component
3us
Electronic Component
BM0227560589
Operating Temperature
55℃~+110℃
Load Voltage
80V
Type
DC
Output Current
50mA
Output Type
Photoelectric Transistor

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

LTV-356T-A 产品概述

一、产品简介

LTV-356T-A 是台湾光宝(LITEON)生产的一款高速光电隔离器(光电三极管输出),采用 4-SOP 封装,内部为双通道(或单通道封装形式请以具体器件封装标识为准)。器件以 DC 输入、光电三极管输出为特点,提供高达 3.75kVrms 的端到端隔离能力,适用于工业控制、通信、电源与微控制器接口等需要电气隔离的场合。

二、主要电气参数

  • 正向压降 Vf:1.2 V(典型,If=50 mA 下参考值)
  • 最大正向电流 If:50 mA
  • 输出电流(集电极电流)Ic:50 mA(最大)
  • 直流反向耐压 Vr:6 V
  • 负载电压(最大):80 V
  • 隔离电压:3.75 kVrms
  • 集射极饱和电压 VCE(sat):200 mV(If=20 mA,Ic=1 mA 条件下典型)
  • 上升/下降时间 tr / tf:4 μs / 3 μs
  • 电流传输比 CTR:最小 80%,最大(饱和值)160%
  • 总功耗 Pd:170 mW
  • 工作温度范围:-55 ℃ ~ +110 ℃
  • 封装:4-SOP

三、关键特性与优势

  • 高隔离电压(3.75 kVrms):满足工业级安全隔离需求,防止高压侧干扰传导到低压侧。
  • 宽温度范围:-55 ℃ 至 +110 ℃,适合恶劣环境应用。
  • 较高 CTR(80%~160%):在较低输入驱动下仍能提供足够输出电流,便于与微控制器或逻辑电路配合。
  • 快速响应(tr 4 μs / tf 3 μs):适用于中速数字信号传输与开关控制,不适合超高速通信链路。
  • 低 VCE(sat):在典型驱动条件下,输出饱和压低,降低功耗和电平损失。

四、典型应用

  • MCU 与高压/高噪声电路之间的信号隔离
  • 开关电源(SMPS)反馈回路隔离
  • 工业自动化、继电器驱动与传感器接口
  • 电信设备、测试测量仪器的安全隔离

五、设计与使用建议

  • CTR 有较大分布(80%~160%),在设计时应按最小 CTR 计算保证可靠工作,并在关键应用中进行实际样片测量校准。
  • 推荐在光电三极管输出端使用合适的上拉电阻。示例:若 VCC=5 V、目标 Ic≈1 mA,可选 R ≈ (5 V - 0.2 V)/1 mA ≈ 4.8 kΩ(视负载与速度需求微调)。
  • 注意 If 最大值 50 mA,避免长期大电流工作以防器件寿命和热应力问题。总功耗 Pd=170 mW,应注意热设计与散热。
  • VCE(sat) 的测量条件为 If 与 Ic 的特定组合,实际电平性能以器件手册曲线为准。
  • 焊接与封装应遵循厂商推荐的回流温度曲线与机械应力规范,以保证长期可靠性。

六、封装与可靠性

LTV-356T-A 提供通用的 4-SOP 表面贴装封装,便于 PCB 布局与自动化贴装。器件符合常规工业可靠性标准,隔离测试与温度循环表现良好;在关键系统中建议进行整机级绝缘与耐压验证。

总结:LTV-356T-A 以其高隔离电压、宽温度范围和良好 CTR 特性,适合需要稳健隔离与中速信号传输的工业与消费电子应用。选型时请结合实际输入驱动、所需输出电流水平及工作环境进行余量设计,并以厂商数据手册为最终依据。

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