Datasheet > SP809EK-L-4-6TR

SP809EK-L-4-6TR

更新时间： 2024-10-02 00:53:47

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
8页	474K
描述
3 Pin Microprocessor Supervisor Circuit

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SP809EK-L-4-6TR 数据手册

SP809 / SP810

3 Pin Microprocessor Supervisor Circuit

February 2011

Rev. 2.0.0

GENERAL DESCRIPTION

APPLICATIONS

The

SP809/SP810

are

low

power

• Portable Electronic Devices

• Electrical Power Meters

• Digital Still Cameras

• µP Power Monitoring

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 V_CChas risen above the reset threshold.

FEATURES

• Ultra Low Supply Current 1µA (typ)

• Guaranteed Reset valid to V_CC= 0.9V

• 140ms Power-On Reset Pulse Width

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.

• 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

The devices are available in 3 pin SOT-23

package.

Part Number

Output Type

Open Drain Active Low

Push-Pull Low

Push-Pull Active High

SP809N

SP809

SP810

TYPICAL APPLICATION DIAGRAM

Fig. 1: SP809 / SP810 Application Diagram

Exar Corporation

www.exar.com

48720 Kato Road, Fremont CA 94538, USA

Tel. +1 510 668-7000 – Fax. +1 510 668-7001

12 3 4 5 6 7 8

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