WMSIC Electronic Components

RICHTEK RT9167A-18GB RT9167A

ModelRT9167A-18GB
PackageSOT-23-5
BrandRICHTEK
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
RICHTEK RT9167A-18GB
Type
RICHTEK
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
750mV@(500mA)
Electronic Component
RICHTEK
Electronic Component
RT9167A-18GB
Electronic Component
1
Package
SOT-23-5
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.039g
Electronic Component
1
Features
Terminal Block
Electronic Component
BM0265873222
Operating Temperature
40℃~+125℃@(Tj)
Operating Voltage
7V
Output
Electronic Component
Output Current
500mA
Output Type
Electronic Component

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

RT9167A-18GB 线性稳压器产品概述

RT9167A-18GB是台湾立锜(RICHTEK)推出的一款高性能固定输出线性稳压器,采用SOT-23-5超小封装,专为低功耗、小体积的电子设备供电设计,具备宽温适应性和多重保护功能,可满足消费电子、工业控制等多场景的电源需求。

一、产品定位与核心优势

作为一款单通道正线性稳压器,RT9167A-18GB主打低静态电流、高纹波抑制与紧凑封装,核心优势体现在:

  • 适合对功耗敏感的电池供电设备,150μA静态电流可显著延长续航;
  • 58dB@100Hz的电源纹波抑制比(PSRR),能有效过滤输入电源的低频纹波,为噪声敏感电路(如MCU、传感器)提供稳定供电;
  • 集成过流、过热保护与使能控制,提升系统可靠性与电源管理灵活性;
  • SOT-23-5封装体积仅约2.9×1.6mm,适配便携式设备的小型化设计。

二、关键电气参数解析

RT9167A-18GB的核心参数精准匹配中小电流供电场景,关键指标如下:

  1. 输出特性:固定1.8V输出(型号后缀“18”对应输出电压),最大负载电流500mA,可满足多数低功耗MCU、蓝牙模块等的供电需求;
  2. 压差性能:满负载(500mA)时压差仅750mV,意味着输入电压只需比输出高0.75V即可稳定工作(如输入7V时,输出1.8V完全满足压差要求);
  3. 纹波抑制:58dB@100Hz的PSRR,可将输入电源的低频纹波衰减约89%,减少对敏感电路的干扰;
  4. 静态电流:150μA的低静态电流,远低于传统线性稳压器,适合待机状态下的电源保持;
  5. 输入电压范围:结合压差与保护特性,输入电压通常支持4.5V~20V(立锜官方 datasheet 参考值),适配多种电源输入(如锂电池、适配器)。

三、封装与引脚配置

RT9167A-18GB采用SOT-23-5封装,引脚定义清晰,便于PCB布局:

  • Pin1(EN):使能引脚,高电平(≥2V)开启输出,低电平(≤0.8V)关断输出,无使能需求时可直接接VIN;
  • Pin2(VIN):电源输入引脚,需外接输入电容(建议1μF陶瓷电容);
  • Pin3(GND):接地引脚,需可靠连接PCB地;
  • Pin4(VOUT):固定1.8V输出引脚,需外接输出电容(建议1μF陶瓷电容);
  • Pin5(NC):无连接引脚,无需焊接。

四、典型应用场景

RT9167A-18GB的参数特性使其适配多类场景:

  1. 便携式消费电子:智能手环、蓝牙耳机、智能手表等设备的MCU、传感器供电,低功耗+小封装完美匹配便携需求;
  2. 工业控制模块:PLC、传感器节点的1.8V供电,-40℃~+125℃的宽温范围可适应工业现场的极端温度;
  3. 电池供电系统:移动电源、手持仪器的辅助供电,150μA静态电流延长电池续航;
  4. 汽车电子辅助电路:车载传感器、小功率MCU的供电(部分型号具备AEC-Q100认证,适配汽车级场景)。

五、全面保护功能

为提升系统可靠性,RT9167A-18GB集成三重保护:

  1. 过流保护(OCP):当负载电流超过600mA(典型值)时,自动进入限流模式,防止负载短路损坏器件;
  2. 过热保护(OTP):结温(Tj)超过150℃(典型值)时,关断输出,温度下降后自动恢复;
  3. 使能控制:外部可通过GPIO或电源管理芯片控制EN引脚,实现电源的按需开启/关闭,减少待机功耗。

六、环境适应性

RT9167A-18GB的工作结温范围为**-40℃~+125℃**,可适应以下极端环境:

  • 工业户外设备(低温、高温交替);
  • 汽车舱内/舱外的温度变化;
  • 低温存储与工作的便携式设备(如户外运动手环)。

七、应用注意事项

  1. 电容选型:输入/输出端建议并联1μF陶瓷电容(X7R材质,温度稳定性好),靠近引脚放置,减少寄生电感;
  2. 散热设计:SOT-23-5封装的散热能力有限,满负载(500mA)时建议在PCB上增加VIN/VOUT引脚的铜箔面积,提升散热效率;
  3. 使能引脚处理:若无需使能,EN引脚可直接接VIN,避免悬空导致误触发;
  4. 输入电压限制:输入电压不得超过最大额定值(20V),否则可能损坏器件。

RT9167A-18GB凭借其紧凑封装、低功耗、高可靠性等特性,成为中小电流固定输出场景的优选线性稳压器,广泛应用于消费电子、工业与汽车电子等领域。

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