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UMW 78L09-150 78L09
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- UMW 78L09-150
- Type
- UMW
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 1.7V
- Electronic Component
- UMW
- Electronic Component
- 49uV
- Electronic Component
- 78L09-150
- Electronic Component
- 1
- Package
- SOT-89-3
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.141g
- Electronic Component
- 1
- Electronic Component
- BM0228149415
- Operating Temperature
- 20℃~+120℃@(Tj)
- Operating Voltage
- 24V
- Output
- Electronic Component
- Output Voltage
- 9V
- Output Current
- 150mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
78L09-150 产品概述
一、产品简介
78L09-150 是友台半导体（UMW）推出的一款固定输出线性稳压器（LDO），输出电压为 9V、最大输出电流 150mA。器件采用 SOT-89-3 小封装，集成热关断与短路保护，适用于对噪声和纹波有一定抑制要求且空间受限的中低功率稳压场合。
二、主要规格
- 输出类型：固定（9V，正极）
- 最大输出电流：150mA
- 静态电流（Iq）：典型 2mA
- 压差（Dropout）：典型 1.7V @ 150mA（注意随电流变化）
- 工作电压：典型输入 24V（器件最高可耐受电压至 30V，使用时请参照实际规格书）
- 工作温度（Tj）：-20℃ ~ +120℃
- 电源纹波抑制比（PSRR）：44dB @ 120Hz
- 输出噪声：49µV（典型）
- 封装：SOT-89-3
- 保护功能：过热关断、限流/短路保护
三、功能特性与设计注意事项
- 稳定性与电容：为保证稳压器稳定与瞬态响应，建议在输入端与输出端分别配置去耦电容（例如输入 1µF10µF，输出 1µF10µF），可选陶瓷或钽电容；不同电容 ESR 对稳定性影响不同，实际布局需验证。
- 最低输入电压：正常稳压时 Vin ≥ Vout + Vdrop，按典型压差 1.7V 计算，最低 Vin ≈ 10.7V。若 Vin 靠近此值，请注意负载与温升影响。
- 功耗与散热：功耗 Pd = (Vin - Vout) × Iout。例如在 Vin=24V、Vout=9V、Iout=150mA 时，Pd ≈ 2.25W，SOT-89 封装散热能力有限，需在 PCB 铜箔、散热面积或降额使用上给予充分考虑，避免长期过热触发热关断或损坏器件。
- 保护机制：内置短路/限流和热关断，可在异常工况下提供一定的自我保护，但不代替系统级保护设计。
四、典型应用场景
- 工业控制模块中对 9V 供电的小功率传感器或模拟前端；
- 仪表、测试设备的局部稳压电源；
- 有一定输入电压余量且对噪声、纹波有抑制需求的嵌入式系统；
- 在空间受限、成本敏感且输出电流在中低档的应用中替代线性稳压需求。
五、封装与选型建议
SOT-89-3 小封装适合空间受限设计，但热管理是关键考量。若输入电压与负载电流同时较高，建议改用更大散热能力的封装或开关电源方案以降低功耗与温升。采购时请确认 UMW 的完整器件型号与批次，并参考最新 Datasheet 以获取环境限值与典型曲线。
如需示例电路、热阻计算或与其他 9V 稳压器的对比分析，可提供更详细设计支持与布局建议。
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