LM809

正在供货

具有低电平有效推挽复位功能、用于监控电源的 3 引脚电压监控器(复位 IC)

产品详情

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.63, 2.93, 3.08, 4.38, 4.63 Features Ease-of-use Reset threshold accuracy (%) 5 Iq (typ) (mA) 0.015 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 240 Supply voltage (min) (V) 1 Supply voltage (max) (V) 5.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 105
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.63, 2.93, 3.08, 4.38, 4.63 Features Ease-of-use Reset threshold accuracy (%) 5 Iq (typ) (mA) 0.015 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 240 Supply voltage (min) (V) 1 Supply voltage (max) (V) 5.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 105
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • Precision Monitoring of Supply Voltages
    • Available Threshold Options:
      2.63 V, 2.93 V, 3.08 V, 4.38 V, 4.63 V
  • Superior Upgrade to MAX809 and MAX810
  • Fully Specified Over Temperature
  • 140-ms Minimum Power-On Reset Pulse Width,
    240-ms Typical
    • Active-Low RESET Output (LM809)
    • Active-High RESET Output (LM810)
  • Ensured RESET Output Valid for VCC ≥ 1 V
  • Low Supply Current, 15-µA Typical
  • Power Supply Transient Immunity
  • Precision Monitoring of Supply Voltages
    • Available Threshold Options:
      2.63 V, 2.93 V, 3.08 V, 4.38 V, 4.63 V
  • Superior Upgrade to MAX809 and MAX810
  • Fully Specified Over Temperature
  • 140-ms Minimum Power-On Reset Pulse Width,
    240-ms Typical
    • Active-Low RESET Output (LM809)
    • Active-High RESET Output (LM810)
  • Ensured RESET Output Valid for VCC ≥ 1 V
  • Low Supply Current, 15-µA Typical
  • Power Supply Transient Immunity

The LM809 and LM810 microprocessors supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down and brown-out conditions.

The function of the LM809 and LM810 are to monitor the VCC supply voltage, and assert a reset signal whenever this voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for 240 ms after VCC rises above the threshold. The LM809 has an active-low RESET output, while the LM810 has an active-high RESET output.

Seven standard reset voltage options are available, suitable for monitoring 5-V, 3.3-V, and 3-V supply voltages.

With a low supply current of only 15 µA, the LM809 and LM810 are ideal for use in portable equipment.

The LM809 and LM810 microprocessors supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down and brown-out conditions.

The function of the LM809 and LM810 are to monitor the VCC supply voltage, and assert a reset signal whenever this voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for 240 ms after VCC rises above the threshold. The LM809 has an active-low RESET output, while the LM810 has an active-high RESET output.

Seven standard reset voltage options are available, suitable for monitoring 5-V, 3.3-V, and 3-V supply voltages.

With a low supply current of only 15 µA, the LM809 and LM810 are ideal for use in portable equipment.

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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 LM809/LM810 3-Pin Microprocessor Reset Circuits 数据表 (Rev. E) PDF | HTML 2016年 4月 20日
应用手册 Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 2020年 3月 17日
选择指南 Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 2020年 2月 28日
技术文章 Using low-Iq voltage supervisors to extend battery life in handheld electronics PDF | HTML 2019年 9月 27日
电子书 电压监测仪和电压检测器:提示、技巧和基础知识 英语版 2019年 8月 28日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
技术文章 Selecting voltage detectors, supervisors, and reset ICs for system safety: part 1 PDF | HTML 2016年 10月 17日
EVM 用户指南 TLV8xxxEVM-019 Evaluation Modules User's Guide 2011年 4月 8日

设计和开发

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仿真模型

LM809_2P45 PSpice Transient Model

SNVMA43.ZIP (41 KB) - PSpice Model
仿真模型

LM809_2P45 Unencrypted PSpice Transient Model

SNVMA42.ZIP (2 KB) - PSpice Model
仿真模型

LM809_2P63 PSpice Transient Model

SNVMA40.ZIP (41 KB) - PSpice Model
仿真模型

LM809_2P63 Unencrypted PSpice Transient Model

SNVMA41.ZIP (2 KB) - PSpice Model
仿真模型

LM809_2P93 PSpice Transient Model

SNVMA38.ZIP (41 KB) - PSpice Model
仿真模型

LM809_2P93 Unencrypted PSpice Transient Model

SNVMA39.ZIP (2 KB) - PSpice Model
仿真模型

LM809_3P08 PSpice Transient Model

SNVMA35.ZIP (41 KB) - PSpice Model
仿真模型

LM809_3P08 Unencrypted PSpice Transient Model

SNVMA34.ZIP (2 KB) - PSpice Model
仿真模型

LM809_4P0 PSpice Transient Model

SNVMA44.ZIP (41 KB) - PSpice Model
仿真模型

LM809_4P0 Unencrypted PSpice Transient Model

SNVMA45.ZIP (2 KB) - PSpice Model
仿真模型

LM809_4P38 PSpice Transient Model

SNVMA36.ZIP (43 KB) - PSpice Model
仿真模型

LM809_4P38 Unencrypted PSpice Transient Model

SNVMA37.ZIP (2 KB) - PSpice Model
仿真模型

LM809_4P63 PSpice Transient Model

SNVMA33.ZIP (41 KB) - PSpice Model
仿真模型

LM809_4P63 Unencrypted PSpice Transient Model

SNVMA32.ZIP (2 KB) - PSpice Model
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封装 引脚 CAD 符号、封装和 3D 模型
SOT-23 (DBZ) 3 Ultra Librarian

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

支持和培训

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