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BELLING BL8503-50PSM BL8503
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BELLING BL8503-50PSM
- Type
- BELLING
- Minimum package
- 1000 卷
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 170mV@(100mA)；320mV@(200mA)
- Electronic Component
- BELLING
- Electronic Component
- BL8503-50PSM
- Electronic Component
- 1
- Package
- SOT-89-3
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.153g
- Electronic Component
- 1
- Features
- Electronic Component
- Electronic Component
- BM0209618950
- Operating Temperature
- 40℃~+125℃@(Ta)
- Operating Voltage
- 8V
- Output
- Electronic Component
- Output Voltage
- 5V
- Output Current
- 250mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BL8503-50PSM 产品概述
一、概述
BL8503-50PSM 是贝岭（BELLING）推出的一款固定输出型线性稳压器（LDO），提供稳定的 5.0V 正向输出，适用于输入电压为 8V 的电源场合。器件单通道、低静态电流、具备过流保护，适合对噪声和纹波敏感且追求简单外围电路的电源设计。
二、主要参数
- 输出类型：固定（5.0V）
- 工作电压（Vin）：8V
- 最大输出电流：250mA
- 压差（Dropout）：170mV @ 100mA；320mV @ 200mA
- 静态电流（Iq）：3µA（典型）
- 输出极性：正极输出
- 特性：过流保护（OCP）
- 工作温度范围：-40℃ ~ +125℃（Ta）
- 封装：SOT-89-3
- 通道数：1
三、关键特性与优势
- 低静态电流（3µA），在待机或低功耗应用中可显著降低空载损耗。
- 较低压差，在中小电流区域（<200mA）能保持较高效率和较小功耗。
- 内置过流保护，提高系统可靠性并简化外部保护电路设计。
- 宽温度范围，适合工业级环境。
四、应用建议
- 工业控制模块、仪表供电
- 单片机、传感器等模块的稳压电源
- 便携设备中的局部稳压（需注意功耗与散热）
- 其他要求固定5V、输出电流在250mA以内的场合
五、布局与热管理要点
- 输出电容：建议在输出端并联 1µF10µF 低 ESR 陶瓷电容，靠近器件引脚放置以保证稳定性与瞬态响应；输入端亦应放置 0.1µF1µF 的去耦电容。具体电容值与 ESR 要求请参照厂商数据手册确认。
- 功率与热耗：当 Vin=8V、Vout=5V、Iout=250mA 时，器件功耗约为 0.75W，SOT-89-3 封装的散热能力有限，长时间高负载时需在 PCB 上提供较大铜面积散热并考虑环境温升与热阻，必要时进行降额设计。
- 引脚与封装：SOT-89-3 常见引脚排列为 IN、GND、OUT（实际以厂家封装图为准），布板时应将 GND 铺铜并与散热区连通。
六、设计注意事项
- 在接近最大输出电流时注意压差与热量的折中，保证结温不超过允许范围。
- 过流保护能在短路或过载情况下提供保护，但不应依赖其长期承受严重过载；建议在系统设计中加入适当熔断或限流方案。
- 具体 electrical characteristics（如精度、纹波抑制、瞬态响应、稳定性条件等）请以贝岭官方数据手册为准，在批量应用前应做样机验证。
BL8503-50PSM 适合对空间和外围要求有限、需要稳定 5V 输出且关注低静态功耗的中低功率电源设计场景。详细参数和典型应用建议，请参考贝岭官方资料或联系供应商获取最新数据手册。
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