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Slkor LM2903
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Slkor LM2903
- Type
- SLKOR
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SLKOR
- Electronic Component
- LM2903
- Electronic Component
- 1
- Package
- SOP-8
- Electronic Component
- Comparator
- Electronic Component
- 0.196g
- Power Supply
- 2V~36V
- Electronic Component
- 1
- Electronic Component
- BM0227676327
- Operating Temperature
- 40℃~+125℃
- Comparator
- Electronic Component
- Output
- MOS；CMOS；ECL；DTL；TTL
- (tr)
- 1.3us
- Static Current(Iq)
- 400uA
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LM2903 产品概述
一、产品简介
LM2903 是一款双路电平比较器（品牌：Slkor/萨科微），采用 SOP-8 封装，针对低功耗和宽电源范围的比较应用设计。器件工作温度范围为 -40℃ 到 +125℃，适用于工业级与汽车级环境。每通道响应时间约 1.3 μs，能够在很多中低速控制与检测场景中替代运放作为比较元件使用。
二、主要性能参数
- 比较器数：双路
- 静态电流 (Iq)：约 400 μA（整芯片低功耗特性）
- 输入失调电压 (Vos)：1 mV（低失调，利于精确比较）
- 输入偏置电流 (Ib)：25 nA；输入失调电流 (Ios)：5 nA
- 响应时间 (tr)：1.3 μs（典型）
- 电源范围：单电源 2 V ～ 36 V；双电源支持范围可覆盖 ±18 V（注意最大电源差不超过 36 V）
- 最大电源宽度 (Vdd-Vss)：36 V
- 输出兼容：可与 MOS、CMOS、ECL、DTL、TTL 等多种逻辑电平兼容（器件为开集电极输出，需外接上拉电阻）
三、关键特性与优势
- 宽电源电压范围，单片可在低压与高压系统间灵活使用。
- 低静态电流，适合电池供电和低功耗系统。
- 低输入失调与低输入电流，提高系统精度并减少漂移影响。
- 双路集成，节省 PCB 面积与器件数量。
- 开集电极输出便于与不同电压域的逻辑直接接口，但需配合合适的上拉电阻。
四、典型应用场景
- 电池电压/欠压检测与保护电路
- 电源与电压监测、过零检测与波形比较
- 开关去抖、窗口比较与阈值触发电路
- 模拟传感器阈值判别、PWM 比较与简单 A/D 前端
- 与单片机、FPGA 等数字逻辑电路的电平接口（通过上拉至目标逻辑电压）
五、设计建议与注意事项
- 输出为开集电极：需外接上拉电阻，上拉电压应与目标逻辑电平兼容。常用上拉电阻范围 4.7 kΩ ～ 100 kΩ，根据速度与功耗权衡选择。
- 若需消抖或稳定切换，建议在正反馈通路中加入迟滞（正反馈电阻），典型阻值范围几十千欧到几百千欧。
- 输入端应避免超过电源轨；必要时添加限流/钳位保护元件。
- 对噪声敏感的应用，建议在电源端并联 0.1 μF 陶瓷旁路电容以保证瞬态稳定。
- 未使用的通道输入应接到定义电平或拉低/拉高以避免浮空误触发。
六、封装与采购
- 封装形式：SOP-8（表面贴装）
- 品牌：Slkor（萨科微）
- 选型时请参考实际样片与器件数据手册，确认温度、偏置与输出能力满足目标应用需求。
本产品以低功耗、宽电源与高兼容性为主要特点，适合工业控制、电源监测及多种门槛检测场合。在具体电路实现中，应重视上拉电阻、输入保护与电源去耦等细节，以确保长期可靠运行。
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