FM810LS3X

更新时间： 2024-01-26 14:33:21

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		监控
页数	文件大小	规格书
9页	461K
描述
3-Pin UC Supervisor Circuits

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数据手册

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FM810LS3X 数据手册

August 2005

FM809/810

3-Pin µC Supervisor Circuits

General Description

The FM809/810 are supervisor circuits that monitor power

supply or other system voltages and issue reset pulse whenever

the voltage being monitored is out of tolerance. Once asserted,

the reset pulse is guaranteed to be valid for a minimum of

140ms (256ms typical). FM809xx offers active low push-pull

type of reset while FM810xx offers active high push-pull type.

Several threshold voltages are offered to accommodate 5.0V,

3.3V, 3.0V and 2.7V system voltages.

■ 140ms power-on RESET delay (minimum)

■ RESET operation guaranteed to 1.0V

■ Supply current only 2µA

■ No external components

■ Operating Range

– -40°C to +105°C (SOT23)

– -40°C to +85°C (SC70)

■ SOT23-3 and SC70-3 packages

The low supply current (typically 2 µA)recommends FM809/810

devices for portable designs or wherever power saving is

primary.

Applications

■ Microcontrollers and Microprocessors

These devices are offered in space saving 3-pin SOT23 and

SC70 packages.

■ Appliances

■ Power-Supply Monitoring

■ Portable Equipment

Features

■ Automotive Systems

■ V voltages of 4.63V, 4.38V, 4.00V, 3.08V, 2.93V and 2.63V

■ RESET (FM809) or RESET (FM810) output

Typical Operating Circuit

V_CC

FM809

µC

RESET

I/P

GND

Connection Diagram

GND

RESET (809) or

RESET (810)

FM809/810

SOT23-3 & SC70-3Packages

FM809/810 Rev. G

www.fairchildsemi.com

12 3 4 5 6 7...9

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