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TI LM4040DIM3-10.0/NOPB LM4040DIM3
Configuration
1 options
Configuration
22+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- TI(Texas Instruments) LM4040DIM3-10.0 / NOPB
- Type
- TI
- Unit
- Electronic Component
- Minimum package
- 3000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- TI(Texas Instruments)
- Electronic Component
- LM4040DIM3-10.0/NOPB
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- Voltage Reference IC
- Electronic Component
- ±1%
- Electronic Component
- 0.05g
- Electronic Component
- 1
- Electronic Component
- BM0227583370
- Operating Temperature
- 40℃~+85℃
- Electronic Component
- 150ppm/℃
- Output Voltage
- 10V
- Output Current
- 15mA
- Output Type
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LM4040DIM3-10.0/NOPB 产品概述
一、简介
LM4040DIM3-10.0/NOPB 是德州仪器（TI）推出的一款固定 10.0V 并联（分流）电压基准芯片，采用 SOT-23 小型封装，适合对体积和性能都有要求的精密参考电路。芯片提供低噪声、良好温漂和较高的输出驱动能力，适用于便携式和工业级精密测量系统。
二、主要特性
- 输出电压：10.0V（固定）
- 精度：±1%
- 输出/分流电流能力：最大 15 mA（可作为分流器工作）
- 最小阴极电流（保持调节）：110 μA
- 温度系数：150 ppm/°C（约 1.5 mV/°C 对 10V 基准）
- 工作温度：-40℃ ~ +85℃（Ta）
- 噪声（10Hz–10kHz）：35 μVrms
- 封装：SOT-23，环保型（NOPB）
三、典型应用场景
- 精密 ADC/DAC 参考源
- 仪表放大器和数据采集系统
- 精密电源与基准发生器
- 传感器校准与偏置源
- 低功耗手持设备（在满足最小阴极电流条件下）
四、封装与热管理建议
SOT-23 小封装便于空间受限设计，但需注意功耗与散热。最大分流电流 15 mA 时，器件耗散功率约为 P ≈ Vref × I ≈ 10V × 15mA = 150 mW。设计时应计算PCB铜箔面积和环境温度，避免长期高电流工作导致过热。
五、典型电路与使用注意
- 基本用法：将 LM4040 作并联基准，阴极接参考电压，阳极接地，通过串联电阻从电源供电以限制电流。
- 串联电阻计算示例：若供电 12V，期望分流电流接近 5 mA，则 R = (12V − 10V) / 5mA = 400 Ω。保证在最小负载或无外部负载时，阴极电流 ≥ 110 μA 以维持稳压。
- 降噪与稳定：推荐在基准输出并联合适的去耦电容（例如 0.01–0.1 μF）以降低高频噪声并改善瞬态响应，注意选用低漏电的陶瓷/薄膜电容以免影响精度。
- 保护与可靠性：系统需限制最大通过器件的电流，不超出 15 mA 上限；若可能产生过压或瞬态，考虑串联限流元件或 TVS 保护。
六、参数摘要（便于快速查阅）
- 型号：LM4040DIM3-10.0/NOPB（TI）
- 输出：固定 10.0V 并联基准
- 精度：±1%
- 温度系数：150 ppm/°C
- 输出电流能力：15 mA（最大）
- 最小调节电流：110 μA
- 噪声（10Hz–10kHz）：35 μVrms
- 工作温度：-40℃ ~ +85℃（Ta）
- 封装：SOT-23（无铅）
总结：LM4040DIM3-10.0/NOPB 以其小体积、低噪声和良好温漂，适合多种精密基准场合。设计时关注最小调节电流和功耗散热，并适当去耦与限流，即可发挥其稳定可靠的参考性能。
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