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BELLING BL78L053
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BELLING BL78L053
- Type
- BELLING
- Minimum package
- 1000 卷
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BELLING
- Electronic Component
- 63uV
- Electronic Component
- BL78L053
- Electronic Component
- 1
- Package
- SOT-89
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.201g
- Electronic Component
- 1
- Features
- Electronic Component
- Electronic Component
- BM0264583419
- Operating Temperature
- 40℃~+85℃@(Ta)
- Operating Voltage
- 42V
- Output
- Electronic Component
- Output Voltage
- 5.35V
- Output Current
- 100mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BL78L053 产品概述
一、产品简介
BL78L053 为贝岭（BELLING）出品的一款固定输出线性稳压器（LDO），封装为 SOT-89。器件为单路正极输出，面向需要从高电压降压到 5.35V 的低功耗、低噪声供电场合，额定输出电流可达 100mA，集成热关断保护，适用于工业与消费类电子的稳压需求。
二、主要电气特性
- 输出电压：5.35V（固定）
- 最大工作电压：42V
- 输出电流：最大 100mA
- 静态电流（Iq）：典型 3mA
- 电源纹波抑制比（PSRR）：60dB @ 120Hz
- 输出噪声：63µV（典型）
- 保护功能：热关断
- 工作温度范围：-40℃ ～ +85℃（Ta）
三、封装与热管理
SOT-89 小型三引脚封装，利于紧凑布板与成本控制。但由于为线性稳压结构，功耗取决于输入-输出压差与输出电流，须注意功耗与结温上升。设计时请计算 Pd = (Vin − 5.35V) × Iout，并根据 PCB 散热面积与环境温度评估允许的连续输出能力，必要时增加散热铜箔或改用散热更好的封装。
四、应用建议
- 作为精密模拟电路、传感器、放大器等的本地参考/供电源，因其低噪声与高 PSRR 有利于降低系统带宽内干扰。
- 适用于工业控制、通信模块、电源管理等需要从较高总线电压降压到稳定 5.35V 的场合。
- 典型外部元件：建议在输入端与输出端并联低 ESR 的旁路电容以保证稳定性与改善瞬态响应（遵循器件数据手册对电容类型与最小值的建议）。
五、选型与注意事项
在选择 BL78L053 作为电源方案时，请确认系统最大输入电压不超过器件额定 42V，估算最大功耗与 PCB 散热能力；对启动、短路及过温行为请参考厂商典型特性与应用电路以保证系统可靠性。该器件以其低噪声、良好 PSRR 及紧凑封装适合多种需要高质量线性稳压的应用场景。
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