Datasheet > SGM836

SGM836

更新时间： 2024-11-22 11:12:55

品牌	Logo	应用领域
圣邦微 - SGMICRO		/
页数	文件大小	规格书
16页	892K
描述
Microprocessor Supervisory Circuit with Programmable Delay Time

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SGM836 数据手册

SGM836

Microprocessor Supervisory Circuit

with Programmable Delay Time

GENERAL DESCRIPTION

FEATURES

The SGM836 family can monitor system voltages from

0.4V to 5V. When the detection voltage falls below the

preset threshold (V_ITL) or the manual reset (nMR) pin is

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

After the detection voltage 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: 0.9V to 5V

● Adjustable Detection Voltage Down to 0.4V

● Manual Reset (nMR) Input

● Open-Drain nRESET Output

● Available in Green SOT-23-6 and TDFN-2×2-6AL

Packages

The SGM836 uses a precision reference to achieve 1%

threshold accuracy. The fixed reset timeout period can

be set to 20ms by leaving the C_Tpin open and can be

set to 300ms by connecting the C_Tpin to V_DDthrough a

resistor. The programmable reset timeout period can be

set from 1.25ms to 10s through an external capacitor

connected to the C_Tpin. Low quiescent current makes

the SGM836 very suitable for battery-powered

applications.

APPLICATIONS

Computers

Portable Equipment

Intelligent Instruments

Microprocessor Systems

Critical μP Power Monitoring

The SGM836 is available in Green SOT-23-6 and

TDFN-2×2-6AL packages.

TYPICAL APPLICATION

1.2V

3.3V

V_DD

nRESET

V_I/O

SENSE

C_T

SENSE

GPIO

V_CORE

DSP

SGM836-1.2

SGM836-3.3

nRESET

GND

nMR

C_T

GND

Figure 1. Typical Application Circuit

SG Micro Corp

APRIL2023–REV. A. 3

www.sg-micro.com

12 3 4 5 6 7...16

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