WMSIC Electronic Components

GR 78L12

Model78L12
PackageSOT-89
BrandGR
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
GR 78L12
Type
GR
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
GR
Electronic Component
78L12
Electronic Component
1
Package
SOT-89
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.1g
Electronic Component
1
Electronic Component
BM0263546178
Operating Temperature
0℃~+125℃@(Tj)
Operating Voltage
36V
Output
Electronic Component
Output Voltage
12V
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.

GR(国睿)78L12固定正输出线性稳压器产品概述

一、产品核心定位与基础属性

GR(国睿)78L12是一款专为小功率固定电压供电设计的线性稳压器,属于78L系列(后缀“12”对应固定输出12V)。该器件采用单通道正极性输出,核心定位为小电流、低纹波、高可靠性的电源转换方案,适用于对体积、纹波抑制有明确要求的各类电子电路,无需额外调节即可实现稳定输出。

二、关键电气参数详解

1. 电压与电流规格

  • 工作电压:额定工作电压36V(输入电压上限),实际应用需保证输入电压高于输出23V(如14V36V范围),确保稳压器正常工作;
  • 输出特性:固定输出12V,最大持续输出电流150mA,满足小功率负载(如传感器、小型MCU、LED驱动等)的供电需求;
  • 输出稳定性:无需外部调节电阻,输出电压一致性较好,简化电路设计复杂度。

2. 电源纹波抑制比(PSRR)

器件PSRR为60dB@120Hz,直接反映对输入纹波的抑制能力:

  • 60dB意味着“输入纹波幅度每增加1000倍,输出纹波仅增加1倍”(如输入纹波1V时,输出纹波仅1mV);
  • 此特性适合对电源纹波敏感的场景(如模拟电路、高精度传感器供电),可有效过滤电源杂波。

三、多重保护功能设计

GR78L12内置三大保护机制,从电流、短路、温度维度提升电路可靠性:

1. 过流保护(OCP)

当输出电流超过额定150mA时,器件自动限制电流至安全范围,避免负载过流导致的器件发热或损坏,同时保护后端负载。

2. 短路保护(SCP)

若输出端发生短路(如负载短路、接线错误),器件会切断/限制输出电流,防止短路电流过大烧毁内部电路;短路故障排除后,可自动恢复正常工作。

3. 热关断(TSD)

当结温(Tj)超过125℃时,热关断功能启动,暂时关闭输出;待温度下降至安全阈值后,自动恢复输出,避免过热导致的永久性损坏。

四、封装与典型应用场景

1. 封装形式

采用SOT-89贴片封装,体积小巧(约2.9mm×2.5mm),适合高密度PCB设计,支持自动贴装,降低生产难度。

2. 典型应用

结合参数特性,该器件适用于以下场景:

  • 消费电子:便携式设备(如小型蓝牙模块、智能手环辅助供电)、小型家电控制板;
  • 工业控制:传感器节点(温度、压力传感器)、PLC辅助模块;
  • 通信设备:小型无线模块(WiFi、蓝牙)、光纤收发器辅助电源;
  • 汽车电子:车载小功率负载(仪表盘指示灯、小型传感器),满足0℃~125℃宽温需求。

五、工作温度范围与可靠性

GR78L12的结温工作范围为0℃~+125℃,覆盖工业级(0℃~85℃)及部分汽车级温度需求,可在高温环境(如设备内部散热有限)下稳定工作。
多重保护功能+宽温设计,使器件在恶劣环境下故障率显著降低,适合对可靠性要求较高的场景。

总结

GR(国睿)78L12作为小功率固定正输出线性稳压器,凭借固定12V输出、150mA电流、60dB纹波抑制、多重保护及SOT-89封装等特性,成为小功率电源设计的实用选择,尤其适合对体积、纹波和可靠性有要求的电子电路。

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