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参数资料
| 型号： | LM3724EM5X-3.08/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封装： | SOT-23, 5 PIN |
| 文件页数： | 1/12页 |
| 文件大小： | 290K |
| 代理商： | LM3724EM5X-3.08/NOPB |
July 2007
LM3722/LM3723/LM3724
5-Pin Microprocessor Reset Circuits
General Description
The LM3722/LM3723/LM3724 microprocessor supervisory
circuits monitor the power supplies in microprocessor and
digital systems. They provide a reset to the microprocessor
during power-up, power-down, brown-out conditions, and
manual reset.
The LM3722/LM3723/LM3724 asserts a reset signal when-
ever the supply decreases below the factory-programmed
reset threshold. Reset will be asserted for at least 100ms even
after V
CC rises above the reset threshold.
The LM3722 has an active-low RESET push-pull output. The
LM3723 has an active-high RESET push-pull output. The
LM3724 has an active-low open-drain RESET output.
Three standard reset voltage options are available, suitable
for monitoring 5V, 3.3V, and 2.5V supply voltages. Additional
reset voltages are also available; contact National Semicon-
ductor for details.
With a low supply current of only 6A, the LM3722/LM3723/
LM3724 are ideal for use in portable equipment. The LM3722/
LM3723/LM3724 are available in the 5-pin SOT23 package.
Features
■ Precise monitoring of 2.5V, 3.3V, and 5V supply voltages
■ Fully specified over temperature
Industrial: 40°C to +85°C
Extended: 40°C to +125°C
■ 100 ms minimum Power-On Reset pulse width, 190 ms
typical:
Active-Low RESET Output (LM3722)
Active-High RESET Output (LM3723)
Active-Low RESET Open Drain Output (LM3724)
■ Guaranteed RESET Output valid for V
CC ≥ 1V
■ Low Supply Current, 6A typical
■ Power supply transient immunity
■ Compatible with MAX811/812 applications
Applications
■ Microprocessor Systems
■ Computers
■ Controllers
■ Intelligent Instruments
■ Portable/Battery-Powered Equipment
Typical Application Circuit
20014401
20014437
Connection Diagram
SOT23-5
20014402
*( ) are for LM3723
2007 National Semiconductor Corporation
200144
www.national.com
LM3722/LM3723/LM3724
5-Pin
Microprocessor
Reset
Circuits
相关PDF资料 |
PDF描述 |
|---|---|
| LM3724EM5-2.32/NOPB | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| LM3722EM5-4.63/NOPB | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| LM3722EM5X-3.08/NOPB | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| LM3722IM5X-3.08/NOPB | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| LM3723EM5-4.63/NOPB | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM3724EM5X-4.63 | 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 |
| LM3724EM5X-4.63/NOPB | 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 |
| LM3724IM5-2.32 | 制造商:Texas Instruments 功能描述:RESET CIRCUIT SMD 3724 SOT-23-5 制造商:Texas Instruments 功能描述:RESET CIRCUIT, SMD, 3724, SOT-23-5 |
| LM3724IM5-2.32 | 制造商:Texas Instruments 功能描述:RESET CIRCUIT SMD 3724 SOT-23-5 |
| LM3724IM5-2.32/NOPB | 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 |
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