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WILLSEMI WL2836D18-4/TR WL2836D18
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- WILLSEMI WL2836D18-4 / TR
- Type
- WILLSEMI
- Minimum package
- 10000
Technical parameters
- Electronic Component
- 140mV@(300mA)
- Electronic Component
- WILLSEMI
- Electronic Component
- WL2836D18-4/TR
- Electronic Component
- 1
- Package
- XDFN-4-EP(1x1)
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.005g
- Electronic Component
- 1
- Electronic Component
- BM0227573517
- Operating Temperature
- 40℃~+85℃@(Ta)
- Operating Voltage
- 5.5V
- Output
- Electronic Component
- Output Voltage
- 1.8V
- Output Current
- 300mA
- Output Type
- Electronic Component
- Output Channel Count
- 1
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
WL2836D18-4/TR 产品概述
一、产品简介
WL2836D18-4/TR 是 WILLSEMI（韦尔）推出的一款固定输出 1.8V 低压差线性稳压器（LDO），输出电流可达 300mA，工作电压最高可达 5.5V。器件集成短路保护、过热保护和外部使能功能，适合对噪声和纹波敏感的便携/嵌入式系统电源稳压场景。
二、主要参数一览
- 输出类型：固定（1.8V）
- 最大输出电流：300mA
- 工作电压（最大）：5.5V
- 压差（Dropout）：140mV @ 300mA
- 电源纹波抑制比（PSRR）：78dB @ 1kHz
- 保护功能：短路保护、过热保护
- 使能：带使能脚（可外部开关控制，具体使能电平请参见规格书）
- 工作温度：-40℃ ~ +85℃（Ta）
- 封装：XDFN-4-EP (1 × 1 mm)
- 输出极性：正极，单通道
三、电气特性与性能亮点
WL2836D18-4/TR 在低压差条件下仍能提供稳定 1.8V 输出，140mV 的典型压差在 300mA 负载下表现优秀，适合输入电压接近输出电压的应用。78dB @ 1kHz 的高 PSRR 能有效抑制来自开关电源或其他噪声源的电压纹波，对模拟电路、RF 前端或音频子系统尤为有利。集成的短路与过热保护提高系统可靠性，外部使能便于电源管理与休眠控制。
四、封装与热管理建议
器件采用 XDFN-4-EP 1×1mm 小型裸露焊盘封装，导热依赖底部散热焊盘（EP）。布局时建议：
- 将裸露焊盘可靠焊接至 PCB 大面积接地铜箔以提升散热；
- 输入/输出电容尽量靠近引脚放置并用完整回流地；
- 估算功耗 P = (Vin − 1.8V) × Iout 并核查 PCB 与器件温升，必要时扩大地铜或加热孔以助散热。
五、使用注意与典型外围
- 输出电容：为保证稳定性与瞬态响应，建议使用低 ESR 陶瓷电容（如 2.2µF–10µF）作为输出旁路；输入侧同样建议放置 1µF–4.7µF 陶瓷电容以滤除高频噪声。具体容量与 ESR 要以参考数据手册推荐为准。
- 使能控制：带使能脚，可做系统电源控制或电源序列；具体逻辑电平和上电时序请参见器件手册。
- 保护功能：短路和热关断能在异常时保护器件，但长期工作接近保护阈值会降低可靠性，应通过系统设计避免持续过载。
六、典型应用场景
便携设备电源、单片机和数字逻辑电源、射频/模拟前端供电、传感器和低功耗 IoT 模块、各类需要低噪声 1.8V 电源的嵌入式系统。
总结：WL2836D18-4/TR 以其低压差、高 PSRR、小封装与完善保护特性，适合对体积、噪声和热管理有较高要求的 1.8V 电源解决方案。更多详细电气特性与封装焊盘信息请参阅 WILLSEMI 官方规格书与封装图。
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