WMSIC Electronic Components

MICROCHIP TC1262-3.3VDB TC1262

ModelTC1262-3.3VDB
PackageSOT-223-3
BrandMICROCHIP
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
MICROCHIP TC1262-3.3VDB
Type
MICROCHIP
Minimum package
78 管

Technical parameters

Electronic Component
Electronic Component
Electronic Component
650mV@(500mA)
Electronic Component
MICROCHIP
Electronic Component
TC1262-3.3VDB
Electronic Component
1
Package
SOT-223-3
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.13g
Electronic Component
1
Electronic Component
BM0264888622
Operating Temperature
40℃~+125℃
Operating Voltage
6V
Output
Electronic Component
Output Voltage
3.3V
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.

TC1262-3.3VDB 线性稳压器产品概述

一、产品核心定位与适用场景

TC1262-3.3VDB是Microchip(美国微芯)推出的固定输出型线性稳压器,专为需要稳定3.3V直流电压、中等负载电流的电路设计,核心定位是低功耗、工业级可靠性的电源转换器件。其适用场景覆盖三类典型需求:

  1. 工业控制模块:如PLC输入输出单元、传感器信号调理电路,适配-40℃~+125℃的宽温环境;
  2. 便携/电池供电设备:如手持数据采集器、低功耗物联网节点,低静态电流可延长续航;
  3. 嵌入式系统:如单片机核心板、小型通信模块,简单的3引脚封装节省PCB空间。

二、关键电气参数解析

该器件的核心参数围绕“稳定输出+低功耗+抗干扰”设计,关键指标如下:

  • 输出特性:固定输出电压3.3V(无需额外调整,精度符合线性稳压器常规标准),最大输出电流500mA,可满足多数中小功率负载(如单片机、小型传感器)需求;
  • 输入与压差:典型工作电压6V,满载压差仅650mV(即500mA负载时,输入电压只需≥3.3V+0.65V=3.95V即可稳定输出),对输入电源电压要求宽松;
  • 纹波抑制:电源纹波抑制比(PSRR)达64dB@1kHz,能有效抑制输入电源的高频纹波,适合对电压稳定性敏感的电路(如模拟传感器、射频前端);
  • 低静态电流:静态电流仅130uA,远低于普通线性稳压器的平均水平,电池供电场景下可减少待机功耗(如物联网节点待机时,功耗提升极微)。

三、封装与物理特性

采用SOT-223-3封装,这是一种超小型表面贴装封装,具有以下优势:

  • 尺寸紧凑:引脚间距与封装体积小,适合高密度PCB设计(如穿戴设备、小型模块);
  • 引脚简单:仅3个引脚(输入VIN、输出VOUT、地GND),焊接与电路设计难度低,无需复杂外围元件;
  • 散热性能:SOT-223封装的散热面积优于常规SOT-23,可支持500mA满载下的稳定工作(需注意PCB预留散热铜箔)。

四、保护功能与可靠性设计

为提升电路安全性与器件寿命,内置两类核心保护功能:

  • 过热保护:当器件结温超过阈值(通常150℃左右)时,自动关断输出,防止因过热导致的器件损坏;
  • 过流保护:负载电流超过额定值(约500mA以上)时,限制输出电流或关断,避免后端电路因过流烧毁;
  • 宽温可靠性:工作温度范围-40℃~+125℃,符合工业级器件标准,可在极端环境(如户外高温、低温仓库)下稳定运行,无需额外散热设计。

五、典型应用电路说明

TC1262-3.3VDB的应用电路非常简单,核心只需3个元件:

  1. 输入电源:选择≥3.95V的直流电源(如6V锂电池、线性电源);
  2. 滤波电容:输入侧并联0.1uF陶瓷电容(去耦高频噪声),输出侧并联10uF电解电容+0.1uF陶瓷电容(改善瞬态响应,稳定输出电压);
  3. 负载:连接3.3V供电的负载(如单片机、传感器)。

需注意:输入电压不可超过器件最大输入电压(通常12V左右,需参考 datasheet 确认),避免损坏器件。

总结

TC1262-3.3VDB以“低静态电流、宽温可靠、简单易用”为核心优势,是工业控制、便携设备、嵌入式系统中3.3V电源转换的高性价比选择,尤其适合对功耗、环境适应性要求较高的场景。

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