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UMW LM2903DR
Configuration
1 options
Configuration
Electronic Component
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- UMW LM2903DR
- Type
- UMW
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- UMW
- Electronic Component
- LM2903DR
- Electronic Component
- 1
- Package
- SOP-8
- Electronic Component
- Comparator
- Electronic Component
- 0.196g
- Power Supply
- 2V~30V
- Electronic Component
- 1
- Electronic Component
- BM0265972202
- Operating Temperature
- 0℃~+70℃
- Comparator
- Electronic Component
- (tr)
- 1.3us
- Static Current(Iq)
- 400uA
- (tpd)
- 300ns
- 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.
LM2903DR 产品概述
一、概述
LM2903DR（友台半导体 UMW）是一款双路开集电极比较器，适用于低电流、宽电压范围的比较与电平检测场合。器件在单电源和对称双电源下均能稳定工作，低静态电流和较快的响应使其在电池供电、传感器接口与电平转换等应用中具有优势。封装为 SOP-8，便于 PCB 布局与批量生产。
二、主要规格
- 比较器数：双路（双通道）
- 电源范围：单电源 2V ～ 30V；双电源等效 ±1V ～ ±15V（最大 VDD−VSS = 30V）
- 输出类型：开集电极（open-collector），需外接上拉电阻
- 输入失调电压（Vos）：典型 1mV
- 输入偏置电流（Ib）：25nA
- 输入失调电流（Ios）：5nA
- 传播延迟（tpd）：约 300ns
- 响应时间（tr）：约 1.3µs
- 静态电流（Iq）：约 400µA（器件静态工作电流）
- 封装：SOP-8
三、功能特点
- 宽电源范围，支持从低压单电源到高压系统的应用，最大电源差 30V。
- 开集电极输出结构，便于实现与不同电压域的接口与线与-或逻辑。
- 低输入失调与低偏置电流，适合对精度有一定要求的比较检测。
- 低静态电流，适合电池供电或低功耗系统。
- 双通道设计节省板级空间，适合多通道比较场景。
四、典型应用
- 电池电压/阈值检测与保护电路
- 电平转换与电平检测（需外接拉电阻）
- 传感器信号比较（光电、温度、霍尔等）
- 开关去抖与脉冲整形电路
- 低功耗便携设备与工业控制接口
五、封装与引脚提示
- 封装形式：SOP-8（便于自动贴片与焊接）
- 输出为开集电极，使用时应根据上拉电阻与被驱动负载选择合适的上拉电压与阻值。
- 输入共模范围覆盖地电位（GND），在单电源系统中可直接比较接地参考信号；在双电源系统请注意输入电压不要超过器件允许范围。
六、设计注意事项
- 由于输出为开集电极，若需推高至系统电平，请选择合适功率与阻值的上拉电阻，避免影响响应速度与功耗。
- 对于精密比较场合，应注意输入失调和偏置电流的影响，可通过外部偏置或补偿电路降低误差。
- 在高速脉冲或噪声环境下，考虑使用适当的输入滤波或滞回设计以避免误触发。
- 工作温度范围建议按器件说明书校核（常见为商业级 0℃～+70℃），高温下参数会发生漂移，应预留裕量。
若需完整数据手册（电气特性曲线、典型应用电路及引脚图），建议参考 UMW（友台）官方 LM2903DR 数据表以进行最终电路设计与可靠性验证。
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