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LITEON LTV-208
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- LITEON LTV-208
- Type
- LITEON
- Unit
- Electronic Component
- Minimum package
- 2000 卷
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- LITEON
- Electronic Component
- LTV-208
- Electronic Component
- 1
- Package
- SOP-8
- Electronic Component
- Transistor Output Optocoupler
- Electronic Component
- 0.339g
- Electronic Component
- 1
- Electronic Component
- BM0228587475
- Operating Temperature
- 55℃~+110℃
- Load Voltage
- 80V
- Type
- DC
- Output Type
- Photoelectric Transistor
- (Pd)
- 150mW
- Output Channel Count
- 2
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LTV-208 产品概述
一、主要特性
LTV-208 为 LITEON（台湾光宝）出品的双通道晶体管输出光耦，面向直流信号隔离与电平传输应用。器件具备高隔离电压与大电流传输比（CTR），典型特性如下：
- 隔离电压：3.75 kVrms
- 输入类型：DC，正向压降 Vf = 1.2 V，最大直流反向耐压 Vr = 6 V，允许正向电流 If ≤ 30 mA
- 输出类型：光电三极管，最大负载电压 80 V
- 电流传输比 CTR：最小 160%，最大/饱和值 320%
- 集-射极饱和电压 VCE(sat)：约 400 mV（按器件规格表给定工况）
- 通道数：2（双路隔离）
- 封装：SOP-8，工作温度范围 -55 ℃ ～ +110 ℃
二、核心参数说明
CTR（电流传输比）较高，意味着在较小 LED 驱动电流下即可获得较大输出电流，适合低功耗隔离接口设计。VCE(sat) 值低，有利于输出作为开集电极驱动较大负载。输入端 Vf=1.2 V，设计驱动电阻时应据此计算并留有裕度；反向耐压 Vr=6 V，禁止将 LED 反向承受过高电压。
三、典型应用场景
- MCU 与高压电路之间的信号隔离与传输
- 电源管理与开关电路的逻辑隔离
- 工业控制、继电器驱动检测与状态传送
- 数据采集模块、电表与电机控制系统的安全隔离
四、使用建议与注意事项
- 驱动电流建议：常见数字隔离可选用 If=1…5 mA；最大不超过 30 mA。举例：5 V 系统下若取 If=1 mA，则限流电阻 R ≈ (5 V − 1.2 V) / 1 mA ≈ 3.8 kΩ（取常用 3.9 kΩ）。
- 输出侧为光电晶体管，常需外接上拉电阻至所需逻辑电源；上拉电阻值与期望开关速度、输出电流与 CTR 有关。
- 保证输入/输出两侧的爬电距离与回路隔离布局，满足 3.75 kVrms 的隔离性能要求。
- 注意环境与温度对 CTR 的影响，低温或高温工况下 CTR 会有变化，实际设计中应留裕量。
- 焊接与工艺：遵循厂商推荐的回流焊温度曲线与湿热处理规范以保证可靠性。
五、封装与选型提示
SOP-8 双通道封装适合通用 PCB 安装，节省空间。选型时注意 CTR 的最小与最大范围对电路容差的影响；若对隔离等级或速度有更高要求，可对比其它型号或光耦类别（如高速光耦、光电二极管＋放大器等）。
六、可靠性与质保关注
器件工作温度范围宽（-55 ℃ 到 +110 ℃），适合工业级环境。实际长期可靠性还需参考厂商完整规格书中的寿命测试、湿热与机械应力数据；在关键系统中建议进行样机试验与老化验证。
小结：LTV-208 凭借高 CTR、较高隔离电压与双路输出的封装形式，是工业控制与一般数字信号隔离的经济实用选择。具体电路设计请结合原厂数据手册中的典型电气特性曲线与引脚定义进行验证。
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