SGM803 datasheet, PDF - EEWORLD Datasheet

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SGM803: DescriptionMicroprocessor Supervisory Circuit in 3-Pin SOT-23 non-manual voltage detection circuit; CategoryPower management; File Size502KB，9 Pages; ManufacturerSG Micro Corp(SGMICRO); Websitehttp://www.sg-micro.com/; Shengbang Microelectronics is a semiconductor company that focuses on the research and development and sales of high-performance, high-quality analog integrated circuits. Shengbang Microelectronics products have excellent performance and quality and can be widely used in many fields such as mobile phones, TVs, DVDs, digital cameras, laptops, consumer electronics, automotive electronics, industrial automation control, medical instruments, LCD displays, etc.

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SGM803 Overview

Microprocessor Supervisory Circuit in 3-Pin SOT-23 non-manual voltage detection circuit

Features

Product Name: Microprocessor Supervisory Circuit in 3-Pin SOT-23 Non-manual Voltage Detection Circuit

Product model: SGM803

Product Description:

The SGM803/SGM809/SGM810 supervisory circuits monitor the power supply voltage in microprocessor and digital systems. They provide a reset output during power-up, power-down and brownout conditions. On power-up, an internal timer holds reset asserted for 240ms. This holds the microprocessor in a reset state until conditions have stabilized. The output remains operational with VCC as low as 1V. The SGM803/SGM809 provides an active low reset signal () while the SGM810 provides an active high signal (RESET) output. The SGM809/SGM810 has push-pull outputs, whereas the SGM803 has an open-drain output, which requires an external pull-up resistor.

Eight reset threshold voltage options are available suitable for monitoring 1.8V, 2.5V, 3V, 3.3V and 5V supply voltages.

The reset comparator features built-in glitch immunity, making it immune to fast transients on VCC.

The low supply current of typically 13μA makes the SGM803/SGM809/SGM810 ideal for use in portable, battery operated equipment. All are specified over the extended -40°С to +125°С temperature range

Product Features:

Precision Voltage Monitor: 1.8V, 2.5V, 3V, 3.3V, 5V Options

Superior Upgrade for MAX803/MAX809/MAX810 and ADM803/ADM809/ADM810

Fully Specified over Temperature

Low Power Consumption (13μA TYP)

Reset Assertion Down to 1V VCC

150ms Min Power-On Reset

Open-Drain Output (SGM803)

Push-Pull Output (SGM809)

Push-Pull RESET Output (SGM810)

-40°С to +125°С Operating Temperature Range

Small Packaging

SGM803 Available in SOT-23-3 and SOT-23

SGM809 Available in SOT-23-3 and SOT-23

SGM810 Available in SOT-23-3 and SOT-23

Application areas:

Microprocessor Systems

Controllers

Intelligent Instruments

Automotive Systems

Safety Systems

Portable Instruments

Product indicators:

Manual reset: N

Supply voltage(V): 1.0 to 5.5

Supply current (μA): 13

Reset Threshold Voltage(V) : 4.63, 4.38, 4.00, 3.08, 2.93, 2.63, 2.32, 1.63

Vcc to reset delay (μs): 20

Reset valid timeout (ms): 240

Package type: SOT-23-3

TODAY-23

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SGM803

SGM809

SGM810

GENERAL DESCRIPTION

The SGM803/SGM809/SGM810 supervisory circuits

monitor the power supply voltage in microprocessor and

digital systems. They provide a reset output during

power-up, power-down and brownout conditions. On

power-up, an internal timer holds reset asserted for 240 ms.

This holds the microprocessor in a reset state until

conditions have stabilized. The

RESET

output remains

operational with V

as low as 1 V. The SGM803/SGM809

provides an active low reset signal (

RESET

) while the

SGM810 provides an active high signal (RESET) output.

The SGM809/SGM810 have push-pull outputs, whereas the

SGM803 has an open-drain output, which requires an

external pull-up resistor.

Seven reset threshold voltage options are available suitable

for monitoring 2.5V, 3V, 3.3V, and 5V supply voltages.

The reset comparator features built-in glitch immunity,

making it immune to fast transients on V

The low supply current of typically 17

A makes the

SGM803/SGM809/SGM810 ideal for use in portable, battery

operated equipment. They are available in the 3-pin SOT23

package.

Microprocessor Supervisory

Circuit in 3-Pin SOT23

FEATURES

−

Precision Voltage Monitor: 2.5V,3 V, 3.3 V, 5 V

Options

−

Superior Upgrade for MAX803/MAX809/MAX810

and SGM803/SGM809/SGM810

−

Fully Specified over Temperature

−

Low Power Consumption (17μA Typ)

−

Reset Assertion Down to 1 V V

−

160 ms Min Power-On Reset

Open-Drain

RESET

Output(SGM803)

Push-Pull

RESET

Output (SGM809)

Push-Pull RESET Output (SGM810)

−

Compact 3-Pin SOT23 Package

PIN CONFIGURATIONS（TOP VIEW）

APPLICATIONS

Microprocessor Systems

Controllers

Intelligent Instruments

Automotive Systems

Safety Systems

Portable Instruments

GND

SGM803

SGM809

SGM810

RESET/RESET

SOT23-3

TYPICAL OPERATION CIRCUIT

RESET

PULL-UP

SGM803 only

SGM803/SGM809

RESET

MICROPROCESSOR

SYSTEM

RESET

SGM809-

ZXN3L

(only)

GND

SOT23-3(L-Type)

GND

Shengbang Microelectronics Co, Ltd

Tel: 86/451/84348461

www.sg-micro.com

REV. B

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