Datasheet > SGM829

SGM829

更新时间： 2024-11-19 11:11:59

品牌	Logo	应用领域
圣邦微 - SGMICRO		/
页数	文件大小	规格书
13页	683K
描述
Microprocessor Supervisory Circuit with Programmable Delay Time

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SGM829 数据手册

SGM829

Microprocessor Supervisory Circuit

with Programmable Delay Time

GENERAL DESCRIPTION

FEATURES

The SGM829 family can monitor system voltages from

1.8V to 5V. When the V_DDvoltage falls below the preset

threshold (V_IT) or the manual reset (nMR) pin is driven

low, the open-drain nRESET output is asserted. After

the V_DDvoltage and nMR voltage return higher than

their respective thresholds, the nRESET output

remains low within the user-adjustable delay time.

● Adjustable Reset Timeout Period: 1.25ms to 10s

● Low Quiescent Current: 0.6μA (TYP)

● High Threshold Accuracy: 1% (TYP)

● Factory-Set Detection Voltages: 1.8V to 5V

● Manual Reset (nMR) Input

● Open-Drain nRESET Output

● Available in a Green SOT-23-5 Package

The SGM829 uses a precision reference to achieve 1%

threshold accuracy. The fixed reset timeout period can

be set to 0.29ms by leaving the SRT pin open. The

programmable reset timeout period can be set from

1.25ms to 10s through an external capacitor connected

to the SRT pin. Low quiescent current makes the

SGM829 very suitable for battery-powered applications.

APPLICATIONS

Computers

Portable Equipment

Intelligent Instruments

Microprocessor Systems

Critical μP Power Monitoring

The SGM829 is available in a Green SOT-23-5 package.

TYPICAL APPLICATION

1.8V

3.3V

V_DD

nRESET

SGM829-3.3

nMR SRT

V_I/O

SRT

GPIO

V_CORE

DSP

SGM829-1.8

nRESET

GND

Figure 1. Typical Application Circuit

SG Micro Corp

AUGUST2022–REV. A.1

www.sg-micro.com

12 3 4 5 6 7...13

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