Datasheet > SGM809B

SGM809B

更新时间： 2023-09-03 20:25:13

品牌	Logo	应用领域
圣邦微 - SGMICRO		/
页数	文件大小	规格书
13页	658K
描述
Low Power Microprocessor Supervisory Circuit

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SGM809B 数据手册

SGM803B/SGM809B/SGM810B

Low Power Microprocessor

Supervisory Circuit

GENERAL DESCRIPTION

FEATURES

The SGM803B, SGM809B and SGM810B are integrated

microprocessor supervisory devices which can be reset

under power-up, power-down or even voltage reduction

brownout conditions. When V_CCis as low as 1V, the

reset output can still operate. On the power-on state,

the internal timer maintains a 240ms reset assertion,

which keeps the microprocessor in the reset state until

the condition is stable.

● Superior Upgrade for MAX803/MAX809/MAX810

and ADM803/ADM809/ADM810

● High Accuracy Fixed Detection Options: 3V, 3.3V

and 5V

● Low Supply Current: 300nA (TYP)

● 150ms (MIN) Power-on Reset Pulse Width

● Reset Output Options:

 Open-Drain nRESET Output (SGM803B)

 Push-Pull nRESET Output (SGM809B)

 Push-Pull RESET Output (SGM810B)

● Reset Valid Down to V_CC= 1V

The SGM803B has an active-low open-drain nRESET

output. The SGM809B has an active-low push-pull

nRESET output and the SGM810B has an active-high

push-pull RESET output. These devices provide five

reset threshold voltage options for 3V, 3.3V and 5V

voltage monitoring.

● Fully Specified over Temperature

● V_CCTransient Immunity

● -40℃ to +125℃ Operating Temperature Range

● Available in Green SOT-23-3 and SOT-23

Packages

The devices all have a low quiescent current of 300nA

(TYP). And the glitch immunity within the reset

comparator protects it from fast transients on V_CC.

APPLICATIONS

The SGM803B, SGM809B and SGM810B are available

in Green SOT-23-3 and SOT-23 packages. They

operates over a junction temperature range of -40℃ to

+125℃.

Battery-Powered Applications

Microprocessor Systems

Portable Equipment

Safety Systems

Intelligent Instruments

TYPICAL APPLICATION

R_PULL-UP

SGM803B

Only

V_CC

Microprocessor

System

SGM803B

/SGM809B

nRESET

GND

Figure 1. Typical Application Circuit

SG Micro Corp

NOVEMBER 2019 – REV. A. 1

www.sg-micro.com

12 3 4 5 6 7...13

中文翻译

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