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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： | 3/6页 |
| 文件大小： | 45K |
| 代理商： | FM803MES3 |
3
www.fairchildsemi.com
FM803
Precision
Reset
Generator
Circuit
FM803 Rev. A.3
Pin Descriptions
Pin Number
Name
Function
1
GND
GROUND
2
/RESET
/RESET remains LOW while V
CC is below
VTH, and for at least 140ms after VCC rises
above V
TH.
3V
CC
Circuit Timing (Ex: FM803)
When operating properly with 5V V
CC (for example), /RESET will
also be about 5V. When VCC starts to fall, /RESET will follow it
down as shown. When V
CC drops below VTH, /RESET drops to
ground ("issues a RESET") and stays there unless V
CC also falls
below its minimum operating voltage, approx. 1V. At this point, the
supervisor loses control, and its output may rise, only to again
follow V
CC down to the ground.
When V
CC begins to rise, /RESET follows it until 1.0V or so is
reached, whereupon the device regains control, /RESET is pulled
to ground, etc. When V
CC rises above VTH, /RESET comes out of
RESET 140 ms later.
If it is required that a lower value than GND + 1.0V is needed on
RESET signal during V
CC ≤ 1V, a 100K resistor may be used on
the device output to GND.
5V
VTH
1V
GND
5V
VTH
1V
GND
VCC
RESET
140ms
/Reset
PBDV
PBRD
tRST
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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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