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参数资料
| 型号： | FM803MES3 |
| 厂商： | FAIRCHILD 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： | 1/6页 |
| 文件大小： | 45K |
| 代理商： | FM803MES3 |
1
www.fairchildsemi.com
FM803
Precision
Reset
Generator
Circuit
FM803 Rev. A.3
FM803
Precision Reset Generator Circuit
Typical Operating Circuit
PRELIMINARY
August 2001
2001 Fairchild Semiconductor Corporation
General Description
The FM803 features comprehensive reset generation for
microcontroller/microprocessor based systems. If the system VCC
voltage level is determined to be in an out-of-tolerance state, the
device automatically generates a low-going reset signal. The
reset signal is held in the active state (low) for a specified duration
(minimum 140 ms) after the V
CC returns to an in-tolerance state.
This device is fabricated using CMOS technology. This device is
available in the SOT-23 package.
The FM803xx also can monitor a switch closure on its output,
enabling it to recognize an external reset from a pushbutton switch
or a microprocessor. In the case of a switch, the closure will be
debounced by circuitry internal to the FM803xx.
Features
I Automatic reset generation on power-up
I Minimum 140 ms reset pulse
I Internal 5k pull-up resistor
I Other reset pulse choices available: 32 - 256 ms
I Operating temperature -40°C to + 105°C
I Choice of Reset Thresholds: 4.63V, 4.38V, 4.00V, 3.08V,
2.93V, 2.63V
I SOT23-3 Package
Connection Diagram
GND
VCC
/RESET
1
FM803
2
3
1
FM803
Controller
2
3
VCC
GND
/RESET
SOT23-3 Package
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相关代理商/技术参数 |
参数描述 |
|---|---|
| FM803MP3X | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:3-Pin レC Supervisor Device |
| FM803MS3X | 功能描述:监控电路 4.38V Gen Circuit act Lo OD Prec Reset 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 |
| FM803RP3X | 功能描述:监控电路 2.63V Gen Circuit act Lo OD Prec Reset 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 |
| FM803RS3X | 功能描述:监控电路 2.63V Gen Circuit act Lo OD Prec Reset 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 |
| FM803SP3X | 功能描述:监控电路 2.93V Gen Circuit act Lo OD Prec Reset 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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