WMSIC Electronic Components

BELLING BL8072COTR33

ModelBL8072COTR33
PackageTO-252
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
BELLING BL8072COTR33
Type
BELLING
Minimum package
2500 卷

Technical parameters

Electronic Component
Electronic Component
Electronic Component
850mV@(1.5A)
Electronic Component
BELLING
Electronic Component
BL8072COTR33
Electronic Component
1
Package
TO-252
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.47g
Electronic Component
1
Electronic Component
BM0227759673
Operating Temperature
40℃~+85℃@(Ta)
Operating Voltage
18V
Output
Electronic Component
Output Voltage
3.3V
Output Current
2A
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.

BL8072COTR33 产品概述

一、产品简介

BL8072COTR33 是贝岭(BELLING)推出的一款高性能线性稳压器(LDO),3.3V 固定输出、单路正极输出,封装为 TO-252(DPAK)。器件设计面向需要低静态功耗与中大电流输出的电源管理场合,适合便携、工业及后级精密供电等应用。

二、主要特性

  • 输出电压:3.3V(固定型,器件型号尾码 33);家族可能还提供可调输出版本。
  • 最大输出电流:2A(单通道)。
  • 压差(Dropout):850mV @ 1.5A(负载越大压差可能略有增加,设计时应留有余量)。
  • 静态电流(Iq):典型 3μA(低静态功耗,利于电池供电系统)。
  • 保护功能:具备热关断与短路保护,增强系统可靠性。
  • 工作温度范围:-40℃ ~ +85℃(Ta,环境温度)。
  • 输出极性:正极输出。
  • 封装:TO-252(DPAK),便于表面贴装和散热处理。

三、功能与保护机制

BL8072COTR33 集成热关断与短路保护,当输出出现过流或器件过热时,内部保护电路会限制输出或断开,以防止器件损坏并提高系统容错性。低静态电流设计既保证空载或待机时电池寿命,又在需要输出较大电流时维持稳定输出。

四、封装与热管理

TO-252(DPAK)封装带有底部散热片,适合通过 PCB 铜箔扩展进行散热。考虑到 2A 输出时器件功耗较大(P = (VIN - VOUT) × IOUT),建议在 PCB 上使用大面积散热铜箔、若干过孔连接至背面铜层,并遵循厂商热阻/封装说明以控制结温。对于高压差或长时间满载工况,应评估结温并必要时采用散热片或更大铜面积。

五、外部元件与布局建议

  • 输入电容:建议在 VIN 引脚附近放置 1~10μF 低 ESR 电容(陶瓷为首选),抑制输入瞬态。
  • 输出电容:为保证稳定性与瞬态响应,通常使用 10~47μF 低 ESR 陶瓷或钽电容,依据实际负载与厂商推荐调整。
  • 布局:输入、输出电容尽量靠近管脚放置;地线采用独立回流面或短而粗的连接;在封装底部和周围布置热过孔,连通内层/背面散热铜箔。
  • 其它:若需更佳瞬态性能,可并联小容量陶瓷和更大值电解/钽电容。

六、典型应用场景

  • 电池供电设备与便携式终端(低静态电流延长待机时间)。
  • 单片机、传感器与外设的 3.3V 供电。
  • 通讯设备、摄像头模块与路由器等需中等至较大瞬时电流的模块后端稳压。
  • 工业控制、测量仪器等需稳定、可靠的线性电源场合。

七、选型与使用注意事项

  • 输入电压裕量:设计时确保 VIN 高于 VOUT + 压差(在 1.5A 时至少 ≈ 3.3V + 0.85V),并留出安全裕量以覆盖电源波动与更高负载条件。
  • 功耗与散热评估:在高负载或高 VIN - VOUT 条件下,器件功耗会显著增加,应按最大结温约束和 PCB 散热能力计算允许电流。
  • 稳定性依赖输出电容特性(容量与 ESR),最终电路应以实际板级调试和厂商数据手册为准。
  • 引脚定义、典型应用电路与最大额定值请参照官方 数据手册 以确保可靠使用。

以上为 BL8072COTR33(TO-252) 的产品概述与设计要点。欲获取详细电气特性曲线、引脚排列与应用参考电路,请参考贝岭官方资料或联系供应商索取完整数据手册。

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