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参数资料
| 型号： | SP809EK-L-2-9/TR |
| 厂商： | EXAR CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封装： | LEAD FREE, MO-178, SOT-23, 3 PIN |
| 文件页数： | 1/8页 |
| 文件大小： | 473K |
| 代理商： | SP809EK-L-2-9/TR |
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February 2011
Rev. 2.0.0
Exar Corporation
www.exar.com
48720 Kato Road, Fremont CA 94538, USA
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
GENERAL DESCRIPTION
The
SP809/SP810
are
low
power
microprocessor (μP) supervisory circuits used
to monitor power supplies in μP and digital
systems.
They provide applications with benefits of
circuit reliability and low cost by eliminating
external components. If the VCC supply
voltage falls below preset threshold then a
reset signal is asserted for at least 140ms
after VCC has risen above the reset threshold.
Both the SP809 and SP810 were designed with
a reset comparator to help identify invalid
signals, which last less than 140ms. The only
difference between them is that they have an
active-low RESET output and active-high
RESET
output,
respectively.
Low
supply
current (1μA) makes SP809/SP810 ideal for
portable equipment.
The devices are available in 3 pin SOT-23
package.
Part Number
Output Type
SP809N
Open Drain Active Low
SP809
Push-Pull Low
SP810
Push-Pull Active High
APPLICATIONS
Portable Electronic Devices
Electrical Power Meters
Digital Still Cameras
P Power Monitoring
FEATURES
Ultra Low Supply Current 1A (typ)
Guaranteed Reset valid to VCC = 0.9V
140ms Power-On Reset Pulse Width
Internally Fixed Threshold
2.3V, 2.6V, 2.9V, 3.1V, 4.4V, 4.6V
1.5% Voltage Threshold Tolerance
3 Pin SOT-23 Package
TYPICAL APPLICATION DIAGRAM
Fig. 1: SP809 / SP810 Application Diagram
相关PDF资料 |
PDF描述 |
|---|---|
| SP8481KP | 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDIP32 |
| SP8481KS | 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO32 |
| SP8481BP | 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDIP32 |
| SP8481BS | 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO32 |
| SP8481JP | 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDIP32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SP809EK-L-3-1/TR | 功能描述:监控电路 3 PIN MICROPROCESSOR RESET CIRCUIT 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 |
| SP809EK-L-4-6/TR | 功能描述:监控电路 3 PIN MICROPROCESSOR RESET CIRCUIT 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 |
| SP809N | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:3 Pin Microprocessor Supervisor Circuit |
| SP809NEK-2.3 | 制造商:Exar Corporation 功能描述:Voltage Detector |
| SP809NEK-2.6 | 制造商:Exar Corporation 功能描述:Voltage Detector |
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