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参数资料
| 型号： | LM809M3-2.45/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封装： | SOT-23, 3 PIN |
| 文件页数： | 1/8页 |
| 文件大小： | 184K |
| 代理商： | LM809M3-2.45/NOPB |
LM809/LM810
3-Pin Microprocessor Reset Circuits
General Description
The LM809/810 microprocessor 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 LM809/810 is to monitor the V
CC supply
voltage, and assert a reset signal whenever this voltage
declines below the factory-programmed reset threshold. The
reset signal remains asserted for 240ms after V
CC 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 5V, 3.3V, and 3V supply voltages.
With a low supply current of only 15A, the LM809/810 are
ideal for use in portable equipment. The LM809/LM810 are
available in the 3-pin SOT23 package and in the 6-Lead LLP
package.
Features
n
Precise monitoring of 3V, 3.3V, and 5V supply voltages
n
Superior upgrade to MAX809/810
n
Fully specified over temperature
n
140ms min. Power-On Reset pulse width, 240ms typical
Active-low RESET Output (LM809)
Active-high RESET Output (LM810)
n
Guaranteed RESET Output valid for V
CC
≥1V
n
Low Supply Current, 15A typ.
n
Power supply transient immunity
Applications
n
Microprocessor Systems
n
Computers
n
Controllers
n
Intelligent Instruments
n
Portable/Battery-Powered Equipment
n
Automotive
Typical Application Circuit
10105701
Connection Diagrams
10105702
( ) are for LM810
10105715
Top View
See NS package Number LDB06A
( ) are for LM810
September 2002
LM809/LM810
3-Pin
Microprocessor
Reset
Circuits
2002 National Semiconductor Corporation
DS101057
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LM809M3X-4.00/NOPB | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| LM810M3-3.08/NOPB | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| LM8364BALMFX45/NOPB | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| LM8364BALMFX30/NOPB | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| LM8364BALMF45/NOPB | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM809M3-3.08 | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| LM809M3-3.08/NOPB | 功能描述:监控电路 UP SUPERVISORY IC RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| LM809M3-3.08/NOPB | 制造商:Texas Instruments 功能描述:VOLTAGE DETECTOR / MICROPROCESSOR SUPERV |
| LM809M3-4.00 | 制造商:Texas Instruments 功能描述:UPROC SUPERVISORY SOT-23-3 809 |
| LM809M3-4.00 | 制造商:Texas Instruments 功能描述:UPROC SUPERVISORY SOT-23-3 809 |
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