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HGSEMI LM285M-1.2/TR LM285M
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HGSEMI LM285M-1.2 / TR
- Type
- HGSEMI
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- HGSEMI
- Electronic Component
- LM285M-1.2/TR
- Electronic Component
- 1
- Package
- SOP-8
- Electronic Component
- Voltage Reference IC
- Electronic Component
- ±0.3%
- Electronic Component
- 0.077g
- Electronic Component
- 1
- Electronic Component
- BM0264801318
- Operating Temperature
- 40℃~+85℃
- Electronic Component
- 30ppm/℃
- Output Voltage
- 1.2V
- Output Current
- 20mA
- Output Type
- Electronic Component
- (10Hz-10kHz)
- 60uVrms
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LM285M-1.2/TR 产品概述
一、产品简介
LM285M-1.2/TR 是华冠（HGSEMI）推出的一款微功耗并联（分流）型带隙基准电压源，输出固定 1.2V。器件采用双极工艺制造，内部具有基准调整机构，可在宽工作电流范围内提供高稳定性、低噪声的电压基准。其设计针对低功耗、便携与工业级应用，适合对电压参考精度和温漂有较高要求的系统。
二、主要性能特点
- 固定输出电压：1.200V（典型）
- 输出允许电流：最高 20mA（并联/分流型）
- 工作电流范围：10μA ~ 20mA（推荐）
- 精度（初始容差）：±0.3%
- 温度系数（TC）：30ppm/°C
- 最小调节阴极电流：8μA（保持基准稳定的最低电流）
- 噪声（10Hz–10kHz）：60μVrms
- 工作温度范围：-40°C ~ +85°C
- 封装：SOP-8
三、电气规格要点
作为并联基准，LM285M-1.2 在使用中需由上游电阻或电流源提供足够的阴极电流以维持调节（Ik ≥ 8μA，推荐 10μA~20mA）。串联电阻计算示例：R = (Vsup - 1.2V) / Ik。器件内部动态电阻低，输出稳定性好，且在规定电流范围内保持 ±0.3% 精度与 30ppm/°C 温漂。噪声低（60μVrms），适用于高精度模数转换器和精密传感前端。
四、典型应用
- 精密 ADC/DAC 的参考源
- 传感器供给/偏置（温度、压力、流量等）
- 电池供电与便携设备的本底基准
- 电压监测与阈值检测电路
- 工业控制与数据采集系统
五、使用建议与注意事项
- 确保工作阴极电流不低于 8μA，推荐保持在 10μA 以上以获得最佳稳定性。
- 建议在输出端并联 0.01–1μF 的低ESR 陶瓷旁路电容以降低噪声与瞬态响应。
- 作为并联基准时，上游串联电阻需考虑其自身功耗与温漂；若供电电压较高，应注意电阻及器件功耗（Pd ≈ Vk × Ik）。
- PCB 布局：将基准与敏感模拟地短且粗地连接，避开高速数字线，旁路电容靠近器件引脚放置。
- 长期稳定性与精度依赖于工作电流稳定性和环境温度控制，必要时实施温度补偿或隔离。
六、封装与订购信息
型号：LM285M-1.2/TR
品牌：HGSEMI（华冠）
封装：SOP-8
工作温度：-40°C ~ +85°C
适用于要求微功耗、低噪声和高温漂性能的各种工业与便携场景。欲获取详细电气特性曲线、引脚定义及应用电路，请参考HGSEMI 官方产品资料与数据手册。
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