WMSIC Electronic Components

BELLING BL8078CC3BTR33

ModelBL8078CC3BTR33
PackageSOT-89-3
BrandBELLING
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration Electronic Component

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
BELLING BL8078CC3BTR33
Type
BELLING
Minimum package
1000 卷

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BELLING
Electronic Component
BL8078CC3BTR33
Electronic Component
1
Package
SOT-89-3
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.137g
Electronic Component
1
Electronic Component
BM0258731352
Operating Temperature
40℃~+85℃@(Ta)
Operating Voltage
40V
Output
Electronic Component
Output Voltage
3.3V
Output Current
150mA
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.

BL8078CC3BTR33 产品概述

一、产品简介

BL8078CC3BTR33 是贝岭(BELLING)推出的一款固定输出线性稳压器(LDO),封装为 SOT-89-3,输出电压为 3.3V,单通道正极性输出,最大输出电流 150mA,允许工作电压最高 40V,工作环境温度范围 -40℃ 到 +85℃(Ta)。器件集成过流保护与短路保护,适用于对成本和布局有要求的低功耗供电场合。

二、主要特性

  • 固定输出 3.3V,输出电流最高 150mA;
  • 宽输入电压上限,支持最高 40V 的工作电源;
  • 单路正极性输出,封装紧凑 SOT-89-3,便于空间受限电路板;
  • 内置过流保护(OCP)与短路保护(SCP),提高系统可靠性;
  • 额定工作温度范围 -40℃ ~ +85℃(Ta),适合工业级常温应用。

三、典型应用场景

  • 单片机、数字逻辑与传感器供电(低至中等电流需求);
  • 通信模块、外围接口和模拟前端的 3.3V 电源;
  • 工业控制及仪表中对稳定 3.3V 电源的本地降压;
  • 消费类电子、小型嵌入式设备等对体积与成本敏感的场合。

四、使用与布局建议

  • 输入与输出端各并联去耦电容,建议在稳压器引脚附近放置 1µF~10µF 的低 ESR 陶瓷电容以确保稳定性,并在输入端加一个较大的电解/钽电容以滤除大幅纹波;
  • 尽量缩短输入/输出与地的走线,输出与地的去耦走线要尽可能粗短,减小寄生电感和压降;
  • SOT-89 封装热阻较大,热耗散能力有限,应在设计时计算功率耗散 Pd = (Vin - 3.3V) × Iout,并根据最大允许结温与 PCB 散热能力进行散热/电流限制设计;在高 Vin 与大电流工况下考虑减少压差或改用更大功率器件。

五、选型与可靠性建议

  • 若工作环境温度或输出电流高于芯片规格建议值,或输入输出压差较大时,应选用功耗能力更强的封装或采用开关电源+LDO 组合以降低功耗;
  • 评估系统在短路/过流情况下的行为,确认内置保护动作满足系统可靠性需求并避免对外部电路造成影响;
  • 在批量生产时参考贝岭提供的器件数据手册与封装图,注意焊接工艺对 SOT-89 热应力的影响,进行必要的可靠性测试。

总结:BL8078CC3BTR33 为一款结构简单、功能完善的 3.3V 固定输出 LDO,适用于中低功率、体积受限且需基本保护功能的应用场景。在应用时重点关注输入电压与输出电流带来的功耗与热设计,以及合适的旁路/去耦电容布局以保证稳定工作。

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