WMSIC Electronic Components

ADI/LINEAR MAX828EUK+T MAX828EUK

ModelMAX828EUK+T
PackageSOT-23-5
BrandADI/LINEAR
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 23+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ADI(Analog Devices) / LINEAR MAX828EUK+T
Type
ADI/LINEAR
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ADI(Analog Devices) / LINEAR
Electronic Component
MAX828EUK+T
Electronic Component
1
Package
SOT-23-5
Electronic Component
Charge Pump
Electronic Component
0.043g
Electronic Component
1
Features
Electronic Component
Type
Electronic Component
Electronic Component
BM0258873070
Operating Temperature
40℃~+85℃
Operating Voltage
1.5V~5.5V
Switching Frequency
12kHz
Electronic Component
94%
Output Resistor
20Ω

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

MAX828EUK+T 产品概述

一、概述

MAX828EUK+T 是一款高效、低功耗的直流/直流可调充电泵反相电压转换器,适用于便携式电子设备的小电流负电源生成。芯片工作电压范围宽(1.5V 至 5.5V),可将输入电压反相为 -1.5V 至 -5.5V,输出电流可达 25mA,且静态电流仅为 60µA,适合对电源效率与电池续航要求高的系统。封装为 SOT-23-5,体积小,方便在空间受限的应用中使用。

二、主要规格

  • 功能类型:反相充电泵(电压转换器)
  • 输入电压:1.5V ~ 5.5V
  • 输出电压范围:-1.5V ~ -5.5V(取决于输入与负载)
  • 输出电流(Iout):最大 25mA
  • 静态电流(Iq):典型 60µA(低待机功耗)
  • 输出电阻:约 20Ω(影响负载下压降)
  • 能量效率:最高可达 94%(视条件而定)
  • 开关频率:约 12kHz
  • 工作温度:-40℃ ~ +85℃
  • 功能特性:支持级联(以获得更大幅值的负电压或灵活配置)
  • 封装:SOT-23-5
  • 典型制造商:Analog Devices / Linear Technology 系列产品

三、功能特点与优势

  • 低输入电压可用:从 1.5V 就能启动并工作,适合单节电池供电系统。
  • 高能效与低静态电流:在空闲或轻载时对电池影响小,工作时效率可达 90% 以上,延长便携设备续航。
  • 紧凑封装:SOT-23-5 小巧,利于 PCB 面积受限的设计。
  • 级联支持:可通过级联方式获得更大的负电压或适配不同应用需求(需注意级联后的电流与效率下降)。
  • 稳定输出:低输出电阻带来较小的负载调节误差,适合驱动模拟电路的负电源需求。

四、典型应用

  • 为运放、比较器等模拟前端提供负偏置电源(小信号传感器、音频前端等)
  • LCD/显示驱动的负偏置电压生成
  • 便携式通信设备与测量仪表中需要负电压的子模块
  • 取代电池堆或较大体积负压发生器,用于空间受限的便携设备
  • 小电流 RS-232/接口偏置(低速或有限负载场景)

五、工程实现要点

  • 外部电容:充电泵对飞行电容与输入/输出电容敏感,应使用低 ESR 的陶瓷电容,按数据手册推荐值选择并尽量靠近芯片引脚布置。
  • 布局建议:飞行电容与电源/地线走线要短且宽,减少寄生阻抗与噪声,提高效率与输出稳定性。
  • 负载与效率权衡:接近 25mA 输出时效率会下降且输出电压受压降影响增大,若需更高负载能力或更稳定电压,可考虑并联或级联解决方案,但要评估散热与总效率。
  • 温度与可靠性:在高温或高负载下注意器件温升与散热条件,保持工作温度在 -40℃~+85℃ 范围内。

六、封装与采购

MAX828EUK+T 提供 SOT-23-5 表面贴装封装,适合自动贴装与卷带供料(+T 表示卷带包装)。在选型与采购时,请参考制造商完整数据手册以获取引脚功能、典型应用电路、典型性能曲线与外部元件推荐值,确保在目标应用场景下达成期望性能。

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