WMSIC Electronic Components

BELLING BL1118CS8TRAD33

ModelBL1118CS8TRAD33
PackageESOP-8
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
BELLING BL1118CS8TRAD33
Type
BELLING
Minimum package
3000 卷

Technical parameters

Electronic Component
Electronic Component
Electronic Component
1.3V@(1A)
Electronic Component
BELLING
Electronic Component
BL1118CS8TRAD33
Electronic Component
1
Package
ESOP-8
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.177g
Electronic Component
1
Electronic Component
BM0264534355
Operating Temperature
20℃~+85℃
Operating Voltage
12V
Output Voltage
1.25V~12V
Output Current
1A
Output Channel Count
2
Static Current(Iq)
2mA

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

BL1118CS8TRAD33 双路线性稳压器(LDO)产品概述

一、产品基本定位

BL1118CS8TRAD33是贝岭(BELLING) 推出的一款双路输出线性稳压器(LDO),采用ESOP-8小尺寸贴片封装,核心面向需要双路稳定电压供电的中低压、中小电流场景,兼顾可靠性与设计简洁性,适用于消费电子、工业控制等领域的常规供电需求。

二、核心参数与性能特征

该产品的关键参数围绕双路输出、保护功能与环境适应性展开,具体如下:

2.1 输出配置

采用双独立通道设计,满足多电压需求:

  • 一路为固定输出(后缀“AD33”对应3.3V固定电压);
  • 另一路为可调输出,电压范围覆盖1.25V~12V,可通过外部电阻分压灵活设置(公式:( V_{OUT} = 1.25V \times (1 + R_1/R_2) ))。
    双路输出电流均为1A(满负载能力),可稳定驱动多数中小功率负载(如MCU、传感器、通信模块等)。

2.2 电压与电流特性

  • 工作电压:最大支持12V输入(需满足输入-输出压差要求);
  • 压差:满负载(1A)时压差为1.3V,即输入电压需比输出电压至少高1.3V才能稳定输出(如输出12V时,输入需≥13.3V);
  • 静态电流(Iq):典型值2mA,处于线性稳压器的常规水平,兼顾响应速度与轻载效率。

2.3 保护与可靠性

内置过流保护(OCP) 与过热保护(OTP):

  • 过流保护:负载电流超过阈值时自动关断输出,避免器件损坏;
  • 过热保护:芯片结温超过150℃(典型值)时触发关断,温度回落至安全范围后自动恢复,提升系统抗异常能力。

2.4 环境适应性

工作温度范围为**-20℃~+85℃,属于工业级温度范围**,可稳定适配多数室内外消费电子与一般工业场景的温度变化(如小型PLC、户外传感器节点)。

三、封装与引脚设计

BL1118CS8TRAD33采用ESOP-8封装(8引脚超薄小外形封装),尺寸紧凑(典型值:5.0mm×6.0mm×1.5mm),适合高密度PCB布局。引脚功能涵盖:

  • 电源输入(VIN)、接地(GND);
  • 双路输出(固定( V_{OUT1} )、可调( V_{OUT2} ));
  • 可调输出反馈(FB)、使能控制(EN)等。
    使能引脚支持电平控制(兼容3.3V/5V逻辑),可实现输出通断管理,进一步优化系统功耗。

四、典型应用场景

结合参数特性,该产品主要应用于以下场景:

  1. 消费电子:智能穿戴设备(智能手表、手环)的双路供电(MCU 3.3V+传感器可调电压)、小型家电控制模块;
  2. 工业控制:小型PLC、传感器节点、数据采集模块的稳定供电(工业温度范围适配);
  3. 通信辅助:蓝牙/Wi-Fi模块、小型基站的辅助电源;
  4. 车载次级:部分车载电子非核心供电(如中控屏辅助模块,需注意温度范围是否匹配具体车载要求)。

五、设计注意事项

为确保稳定工作,设计时需注意以下要点:

  • 输入电压裕量:必须保证输入电压 ≥ 输出电压 + 1.3V(满负载),避免输出电压跌落;
  • 滤波电容:输入端并联10μF陶瓷电容(ESR<1Ω),双路输出端各并联10μF陶瓷电容,提升纹波抑制能力;
  • 散热设计:满负载1A时,PCB需为封装底部与引脚预留≥10mm²铜箔面积,避免结温过高;
  • 可调电阻选择:可调通道需用1%精度电阻(R1、R2),保证输出电压准确性。

六、产品优劣势总结

优势

  • 双路集成:固定+可调输出,减少系统LDO数量,简化PCB设计;
  • 保护完善:过流、过热保护提升可靠性,降低维护成本;
  • 小封装:ESOP-8节省空间,适配高密度布局;
  • 宽输出范围:可调1.25V~12V覆盖多数常见电压需求。

局限性

  • 压差较大:1.3V@1A,不适合输入输出压差小的场景(如输入5V输出4V);
  • 静态电流偏高:2mA,不适合电池供电且低功耗要求极高的场景(如长期待机IoT设备);
  • 电流能力有限:单路1A,无法满足大电流负载(如>1A的功率器件)。

综上,BL1118CS8TRAD33是一款性价比突出的双路LDO,适合对空间、成本敏感且需要双路稳定供电的中低功率场景,是消费电子与一般工业应用的实用选择。

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