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LM339

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低功耗四电压比较器

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产品概述

描述

This family of devices consists of four independent precision-voltage comparators with an offset voltage specification as low as 2 mV maximum for LM339A, LM239A, and LM139A. Each comparator has been designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible.

These comparators also have a unique characteristic in that the input common mode voltage range includes ground even though operated from a single power supply voltage.

  • 所有功能

    • Wide single supply voltage range or dual supplies for all devices: +2 to +36 V or ±1 V to ±18 V
    • Very low supply current (1.1 mA) independent of supply voltage
    • Low input bias current: 25 nA typ
    • Low input offset current: ±5 nA typ
    • Low input offset voltage: ±1 mV typ
    • Input common-mode voltage range includes ground
    • Low output saturation voltage: 250 mV typ;(ISINK = 4 mA)
    • Differential input voltage range equal to the supply voltage
    • TTL, DTL, ECL, MOS, CMOS compatible outputs

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电源管理设计中心

组件的热电模拟器

信号调节设计工具

NFC/RFID计算器

选择设计工具：
电源管理设计中心

电源设计工具

• 支持按拓扑、类型和产品进行SMPS设计
• 具有模拟和数字控制的PFC设计
• 支持各种PCB配置
Choose type:
DC/DC
AC/DC
太阳能电池充电器
电源管理设计中心

LED照明设计工具

• 处理常见拓扑中的AC-DC和DC-DC设计
• 显示带注释的交互式原理图
• 提供电流/电压曲线图、波特图、效率曲线和功率损耗数据
Choose type:
DC/DC
AC/DC
电源管理设计中心

数字电源工作台

• 提供电源部分和控制回路的逐步优化设计。
• 为定制应用生成 STM32Cube 嵌入式软件包，并允许生成与多个 STM32 IDE 兼容的固件项目。
电源管理设计中心

电源树设计器

• 为树中的每个节点指定输入/输出功率
• 检查一致性
• 设计每个单独的节点
选择设计工具：
组件的热电模拟器

AC开关模拟器

• 选择额定值与应用波形
• 获取结温与阻断电压曲线图
• 搜索合适的器件并进行排序
组件的热电模拟器

整流二极管模拟器

• 选择额定值与应用波形
• 预测功率损耗
• 搜索合适的器件并进行排序
组件的热电模拟器

STPOWER Studio

• 支持长期任务剖面
• 提供功率损耗与温度曲线图
• 帮助确定散热器热性能
组件的热电模拟器

Twister Sim

• 为ViPOWER汽车电源器件选型提供帮助
• 支持负载兼容性、线束优化、故障工况影响和诊断分析
• 支持各种PCB配置
组件的热电模拟器

TVS模拟器

• 指定系统额定值和浪涌波形
• 搜索合适的器件并进行排序
组件的热电模拟器

Estimate

• 数分钟即可完成简单原理图构建及固件输入
• 快速生成电池寿命、系统功耗和BOM成本的可靠估算结果
组件的热电模拟器

PCB热模拟器

• 支持通过Gerber文件进行PCB热分析。
• 可添加热源、散热器、铜区域和热路径。
• 采用强大的服务器端引擎实现渲染和模拟。
• 通过二维图表直观显示热分析结果。
选择设计工具：
信号调节设计工具

有源滤波器

• 处理多级设计和常见拓扑结构
• 返回电路元件值
• 提供增益、相位和群延迟图
• 低通、高通和带通
信号调节设计工具

低侧电流检测

• 返回电路元件值
• 提供电流误差图
信号调节设计工具

高侧电流检测

• 提供电流误差图。
• 帮助选择正确的高侧电流检测和分流器件。
选择设计工具：
NFC/RFID计算器

NFC电感

• 输入电路图和基板性能
• 获取天线阻抗
NFC/RFID计算器

UHF链路预算

• 输入正向和反向链接特性
• 该工具将返回链接预算估算
NFC/RFID计算器

NFC调谐电路

• 输入天线参数和匹配目标
• 选择匹配网络的拓扑结构
• 该工具将返回所需设计目标的元件值
信号调节设计工具

比较器

• 处理最常见的配置
• 返回电路元件值
• 提供I/O信号波形
• 反相、非反相、窗口

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The current status of a product:
Active: Product is in volume production
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Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.Marketing description of the package type.Compliancy of the device with industry requirement domains (IRD)The RoHS status of a product:
ECOPACK 1: Initial grade to identify European RoHS compliant products.
ECOPACK 2: New grade to identify brominated chlorinated and antimony oxide flame retardant free products.
ECOPACK 3: Halogen free RoHS exemptions free products.
(*): ECOPACK 2 version available upon request.
(**): Some versions still existing in ECOPACK 1 or not compliant.Longevity Commitment in yearsLongevity Starting DateThe current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.Budgetary PriceMarketing description of the package type.Storage method used to contain product.Main country of assembly or fabrication of the product.ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes. ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes.The value as specified by level (minTypMax) of the ambient temperature (in Cel) in which this item was designed to operate.The value as specified by level (minTypMax) of the ambient temperature (in Cel) in which this item was designed to operate.The value as specified by level (minTypMax) of the ambient temperature (in Cel) in which this item was designed to operate.